SCEC Records Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values. Value is changed from extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values. Value ties values from earlier dates. Value set at multiple stations on the same date. Value set at multiple locations on the same date and ties values from earlier dates. Value has been officially reviewed by a State Climate Extremes Committee. Additional information is available. Official value may be exceeded by a widely accepted unofficial value that is not supported by a direct, calibrated observation (e.g., estimates, uncalibrated instruments, anecdotal reports). Alabama All-Time Maximum Temperature 112 degrees F 19250906 19250906 Centerville 011520 E Alabama All-Time Minimum Temperature -27 degrees F 19660130 19660130 New Market 015867 E Alabama All-Time Greatest 24-Hour Precipitation 32.52 inches 19970719 19970720 Dauphin Island Sea Lab 012172 EA Although higher amounts have been observed in other states, the 32.52 inches of rainfall that was observed in 24-hrs over July 19-20, 1997 at Dauphin Island Sea Lab in conjunction with Hurricane Danny is the greatest 24-hr rainfall that has been directly observed at an officially established observation station within the coterminous United States. Alabama All-Time Maximum 24-Hour Snowfall 20 inches 19930313 19930313 Walunt Grove 018648 N Alabama All-Time Maximum Snow Depth 22 inches 19400124 19400124 Reform 016847 N Alabama Hail: Weight 0.6125 pounds 20180319 20180319 Walter N/A NSA Alabama Hail: Circumference 13.75 inches 20180319 20180319 Walter N/A NSA Alabama Hail: Diameter 5.38 inches 20180319 20180319 Walter N/A NSA Alabama Hail: Volume 19.8 cubic inches 20180319 20180319 Walter N/A NSA Alaska All-Time Maximum Temperature 100 degrees F 19150627 19150627 Fort Yukon 26413 E Alaska All-Time Minimum Temperature -80 degrees F 19710123 19710123 Prospect Creek Camp 507778 E Alaska All-Time Greatest 24-Hour Precipitation 15.05 inches 19861010 19861010 Seward 26438 N The previously-listed state record of 15.2 inches at Angoon on October 12, 1982 was determined to be invalid by the SCEC, based largely on analysis that resulted in this Bulletin of the American Meteorological Society article. Alaska All-Time Maximum 24-Hour Snowfall 78 inches 19630209 19630209 Mile 47 Camp 505878 N Alaska All-Time Maximum Snow Depth 192 inches 20080411 20080411 Valdez Municipal Airport 509685 N1 Alaska All-Time Maximum Snow Depth 192 inches 20080307 20080307 Valdez Municipal Airport 509685 N1 Arizona All-Time Maximum Temperature 128 degrees F 19940629 19940629 Lake Havasu City 024761 E Arizona All-Time Minimum Temperature -40 degrees F 19710107 19710107 Hawley Lake 023926 E Arizona All-Time Greatest 24-Hour Precipitation 11.4 inches 19700904 19700905 Workman Creek 029534 E Arizona All-Time Maximum 24-Hour Snowfall 38 inches 19870225 19870225 Alpine 020170 N1 Arizona All-Time Maximum 24-Hour Snowfall 38 inches 19671214 19671214 Heber Ranger Stn 023961 N1 Arizona All-Time Maximum Snow Depth 91 inches 19671221 19671221 Hawley Lake 023926 N Arkansas All-Time Maximum Temperature 120 degrees F 19360810 19360810 Ozark 035508 E Arkansas All-Time Minimum Temperature -29 degrees F 19050213 19050213 Brook Farm Pond (near Gravette) 032930 E Arkansas All-Time Greatest 24-Hour Precipitation 14.06 inches 19821203 19821203 Big Fork 030664 E Arkansas Maximum Annual Precipitation Total 101.05 inches 20150101 20151231 Big Fork 1 SSE 030664 NA This value exceeds the previous record of 100.05 inches at Leola (GHCN-Daily ID USC00034134; COOP ID 034134) from July 1, 2008 through June 30, 2009. The previous record was established by an ad hoc SCEC convened in February 2010, and replaced, in turn the previous record of 98.55 inches observed in New Hope in 1957. Arkansas All-Time Maximum 24-Hour Snowfall 25 inches 19180122 19180122 Corning 031632 N Arkansas All-Time Maximum Snow Depth 26 inches 19180122 19180122 Calico Rock 2WSW 031132 N California All-Time Maximum Temperature 134 degrees F 19130710 19130710 Greenland Ranch 043603 E California All-Time Minimum Temperature -45 degrees F 19370120 19370120 Boca 040931 E California All-Time Greatest 24-Hour Precipitation 25.83 inches 19430122 19430123 Hoegees Camp 044017 EA Hourly precipitation values for Hoegee's Campground (in the mountains outside Los Angeles) indicate the greatest 24-hour rainfall occurred between 1:00 AM on January 22nd to 1:00 AM on January 23rd. During that period, the storm delivered 25.83 inches (corrected from previous reports of 26.12 inches). A detailed post-storm report was produced by the Weather Bureau. California All-Time Maximum 24-Hour Snowfall 67 inches 19820105 19820105 Echo Summit Sierra at Tahoe 042671 N California All-Time Maximum Snow Depth 451 inches 19110311 19110311 Tamarack 048781 E California Maximum Wind Gust 199 mph 20170220 20170220 Alpine Summit (Ward Mt) SUMAM (MesoWest) SA Colorado All-Time Maximum Temperature 115 degrees F 20190720 20190720 John Martin Dam 054388 NA Replaces previous established record of 114 degrees F set at Las Animas on July 1, 1933 and tied at Sedgwick on July 11, 1954. Also, a 118 degrees F report that had persisted in the record books at Bennett, CO on July 11, 1888 was found to be a transcription error. Area temperatures were ~15-20 degrees cooler on that date.. Colorado All-Time Minimum Temperature -61 degrees F 19850201 19850201 Maybell 055446 E Colorado All-Time Greatest 24-Hour Precipitation 11.85 inches 20130912 20130912 USGS Rod & Gun (Ft. Carson) USGS 384053104492001 NA Had a 9 AM to 9 AM observing period been used ending at 9 AM on September 13th, that the measurement would have been 12.46\". However, the SCEC chose to confirm the calendar-day value as the official record. In either case, the previously acknowledged record of 11.08\" at Holly on June 17, 1965 was superseded. Colorado All-Time Maximum 24-Hour Snowfall 75.8 inches 19210414 19210415 Silver Lake 057648 E Colorado All-Time Maximum Snow Depth 251 inches 19790331 19790331 Wolf Creek Pass 1E 059181 N Colorado Hail: Weight 0.53125 pounds 20190813 20190813 8 mi NNW of Bethune SA Colorado Hail: Circumference 12.875 inches 20190813 20190813 8 mi NNW of Bethune SA Colorado Hail: Diameter 5.25 inches 20230808 20230808 8 mi ENE of Kirk SA A record hailstone was discovered by a storm chaser near Kirk, CO, on 8 August 2023. The diameter of this hailstone exceeded the prior record of 4.83 inches set near Bethune, CO, on 13 August 2019. Colorado Hail: Volume 16.55 cubic inches 20190813 20190813 8 mi NNW of Bethune SA Colorado Lowest Mean Sea Level Pressure 970.4 hPa 20190313 20190313 Lamar USW00003013 NSA This was the initial mean sea level pressure record established for any state. The SCEC report therefore contains several additional methodological considerations for future MSLP committees. More details are available in the report associated with this investigation. Connecticut All-Time Maximum Temperature 106 degrees F 19950715 19950715 Danbury 061762 E1 Connecticut All-Time Maximum Temperature 106 degrees F 19160823 19160823 Torrington 068438 E1 Connecticut All-Time Minimum Temperature -32 degrees F 19610122 19610122 Coventry 061689 E1 Connecticut All-Time Minimum Temperature -32 degrees F 19430216 19430216 Falls Village 062658 E1 Connecticut All-Time Greatest 24-Hour Precipitation 12.77 inches 19550819 19550819 Burlington 060973 E Connecticut All-Time Maximum 24-Hour Snowfall 36 inches 20130208 20130209 Ansonia 1NE 060128 NSA The 24-hr snowfall at Ansonia 1NE was the result of a powerful blizzard which impacted the Tri-State Region. After the storm subsided, many locations around the region reported more than 30 inches of snow. The State Climate Extremes Committee verified the validity of the observation at Ansonia. Connecticut All-Time Maximum Snow Depth 55 inches 19610205 19610205 Norfolk 2SW 065445 E Delaware All-Time Maximum Temperature 110 degrees F 19300721 19300721 Millsboro 076020 E Delaware All-Time Minimum Temperature -17 degrees F 18930117 18930117 Millsboro 076020 E Delaware All-Time Greatest 24-Hour Precipitation 12.48 inches 20160928 20160929 Harbeson DEOS Mesonet Station DWAR (NWSLI WARD1) NSA The Harbeson value replaced the previously reported record of 8.5 inches, set at Dover on 13 July 1975. However, the SCEC reviewing the Harbeson record determined that the Dover record had actually been exceeded twice between 1975 and the Harbeson event, during Tropical Storms Floyd (1999) and Irene (2011). More details are available in the report associated with this investigation. Delaware All-Time Maximum 24-Hour Snowfall 25 inches 19790219 19790219 Dover 072730 E Delaware All-Time Maximum Seasonal (July-June) Snowfall 72.7 inches 20090701 20100630 Bear 2SW 071200 NSA Delaware Monthly Maximum Snowfall 46.9 inches 20100201 20100228 Bear 2SW 071200 NSA Delaware All-Time Maximum Snow Depth 28 inches 20100207 20100207 Greenwood 2.9 SE CoCoRaHS DE-SS-7 NSA The Greenwood value replaced the previously reported record of 25 inches, set at Wilmington New Castle CO AP (13781) on 18 February, 2003 and Bridgeville 1 NW (071330) on 19 February 1979. More details are available in the associated report. Florida All-Time Maximum Temperature 109 degrees F 19310629 19310629 Monticello 085879 E Florida All-Time Minimum Temperature -2 degrees F 18990213 18990213 Tallahassee 088754 E Florida All-Time Greatest 24-Hour Precipitation 23.28 inches 19801111 19801112 Key West 12836 NA The previously reported extreme of 38.70 inches at Yankeetown on September 5, 1950 is an estimated depth of rainfall calculated as part of a post-storm survey of Hurricane Easy (Cedar Keys Hurricane). Value has historically been considered reasonably accurate (and even an underestimate of actual rain fall), but as an estimate cannot be considered an official observation from a reliable precipitation gauge. Florida All-Time Maximum 24-Hour Snowfall 4 inches 19540306 19540306 Milton Exp. Stn. 085793 E Florida All-Time Maximum Snow Depth 4 inches 19540306 19540306 Milton Exp. Stn 085793 N Georgia All-Time Maximum Temperature 112 degrees F 19830820 19830820 Greenville 2 NNW 093915 E1 Georgia All-Time Maximum Temperature 112 degrees F 19520724 19520724 Louisville 095314 E1 Georgia All-Time Minimum Temperature -17 degrees F 19400127 19400127 CCC Fire Camp F-16 (nr. Beatum) EA Record of -17 degrees F at Civilian Conservation Corps Logging Camp F-16 is congruent with similar low temperatures observed in the area on January 27, 1940. This observation is archived as part of the National Archives CCC collection. Georgia All-Time Greatest 24-Hour Precipitation 21.1 inches 19940706 19940706 Americus 090253 E Georgia All-Time Maximum 24-Hour Snowfall 19.3 inches 19420303 19420303 Cedartown 3NE 091732 E Georgia All-Time Maximum Snow Depth 18 inches 19930313 19930313 Chatsworth 2 091863 N Hawaii All-Time Maximum Temperature 100 degrees F 19310427 19310427 Pahala (Hawaii) 517421 E Hawaii All-Time Minimum Temperature 12 degrees F 19790517 19790517 Mauna Kea Observatory (Hawaii) 516183 E Hawaii All-Time Greatest 24-Hour Precipitation 49.69 inches 20180414 20180415 Waipā Garden (Kauai) NA This value exceeded the previous record of 38 inches, observed at Kilauea Sugar Co. Plantation on 24-25 January 1956, which itself was an estimate. The 2018 value also became the national record for 24-hour precipitation. View the associated National Climate Extremes Committee report. The members of the SCEC deferred to the NCEC findings. Hawaii All-Time Maximum 24-Hour Snowfall 6.5 inches 19360202 19360202 Haleakali (Maui) 510992 N Hawaii All-Time Maximum Snow Depth 5 inches 19380406 19380406 Haleakali (Maui) 510992 N Idaho All-Time Maximum Temperature 118 degrees F 19340728 19340728 Orofino 106681 E Idaho All-Time Minimum Temperature -60 degrees F 19430118 19430118 Island Park Dam 104598 E Idaho All-Time Greatest 24-Hour Precipitation 7.17 inches 19091123 19091123 Rattlesnake Creek 107545 E Idaho All-Time Maximum 24-Hour Snowfall 31 inches 19671218 19671218 Anderson Dam 100282 N Idaho All-Time Maximum Snow Depth 182 inches 19540222 19540222 Mullan Pass VOR/DME 24154 N1 Idaho All-Time Maximum Snow Depth 182 inches 19540220 19540220 Mullan Pass VOR/DME 24154 N1 Illinois All-Time Maximum Temperature 117 degrees F 19540714 19540714 East St. Louis 112614 E Illinois All-Time Minimum Temperature -38 degrees F 20190131 20190131 Mt. Carroll 115901 NS This value exceeded the previous record of -36 degrees F, observed at Congerville on 5 January 1999. Illinois All-Time Greatest 24-Hour Precipitation 16.91 inches 19960718 19960718 Aurora 110338 E Illinois All-Time Maximum 24-Hour Snowfall 36 inches 19000228 19000228 Astoria 110291 N Illinois All-Time Maximum Snow Depth 41 inches 19790131 19790131 Gebhard Woods St.Pk. 113369 N1 Illinois All-Time Maximum Snow Depth 41 inches 19000228 19000228 Astoria 110291 N1 Illinois Hail: Diameter 4.75 inches 20150610 20150610 2 mi NNW of Minooka SA Indiana All-Time Maximum Temperature 116 degrees F 19360714 19360714 Collegeville (South side of Renssalaer) 121719 E Indiana All-Time Minimum Temperature -36 degrees F 19940119 19940119 New Whiteland 126304 E Indiana All-Time Greatest 24-Hour Precipitation 10.5 inches 19050806 19050806 Princeton 127125 E Indiana All-Time Maximum 24-Hour Snowfall 33 inches 20041223 20041223 Salem 127755 N Indiana All-Time Maximum Snow Depth 47 inches 19180128 19180128 Hammond 123650 N Iowa All-Time Maximum Temperature 118 degrees F 19340720 19340720 Keokuk No. 2 134372 EA The value of 118 degrees F is confirmed as a valid observation, but the station sits on a bluff above the river and the observation is characteristic more of the local microclimate than the area climate. If this value is in doubt, the next highest value is 117 degrees F on July 25, 1936 at both Logan and Atlantic. Iowa All-Time Minimum Temperature -47 degrees F 19960203 19960203 Elkader 132603 E1 Iowa All-Time Minimum Temperature -47 degrees F 19120112 19120112 Washta 138693 E1 Iowa All-Time Greatest 24-Hour Precipitation 13.18 inches 19980614 19980614 Atlantic 1NE 130364 NA Previously reported record of 16.70 inches in Decatur Co. on August 5-6, 1959 is likely valid, but was estimated from a post-event survey observation. A 13.52 inch observation was made at Atlantic 5SW on June 14, 1998, but it is likely that the observation covered more than a 24-hr period. Iowa All-Time Maximum 24-Hour Snowfall 24 inches 19180420 19180420 Lenox 134746 N State climatologist reports a greater 24-hr snow fall that spanned 2 observational days. Iowa All-Time Maximum Snow Depth 52 inches 19690301 19690301 Lake Park 134561 E1 Iowa All-Time Maximum Snow Depth 52 inches 19690228 19690228 Lake Park 134561 E1 Possible issues with reporting of snow depth at Lake Park. State climatologist is investigating. Kansas All-Time Maximum Temperature 121 degrees F 19360724 19360724 Alton 140201 E1 Kansas All-Time Maximum Temperature 121 degrees F 19360718 19360718 Fredonia 142894 E1 Kansas All-Time Minimum Temperature -40 degrees F 19050213 19050213 Lebanon 144598 E Kansas All-Time Greatest 24-Hour Precipitation inches Under Review The previously posted value of 13.53\" was discovered to be in error. An investigation to determine the legitimate record is underway. Kansas Maximum Annual Precipitation Total 75.33 inches 20190101 20191231 Farlington 0.8 NNE CoCoRaHS KS-CR-10 NS Kansas All-Time Maximum 24-Hour Snowfall 30 inches 20090328 20090328 Pratt 146549 NSA The 30.0 inches observed at Pratt in 2009 was formally evaluated by the State Climate Extremes Committee. Kansas All-Time Maximum Snow Depth 40 inches 19181231 19181231 Syracuse 148038 N Kansas Hail: Weight 1.65 pounds 19700903 19700903 Coffeyville EA The Coffeyville hailstone held the record for the nation's largest hailstone until June 22, 2003, when the record was eclipsed by a hailstone that fell near Aurora, Nebraska. It also held the U.S. record for all-time heaviest hailstone until July 23, 2010 when a heavier hailstone fell in Vivian, SD. Kansas Hail: Circumference 17.6 inches 19700903 19700903 Coffeyville EA The Coffeyville hailstone held the record for the nation's largest hailstone until June 22, 2003, when the record was eclipsed by a hailstone that fell near Aurora, Nebraska. It also held the U.S. record for all-time heaviest hailstone until July 23, 2010 when a heavier hailstone fell in Vivian, SD. Kansas Hail: Diameter 7.75 inches 20100915 20100915 Wichita NSA The Wichita hailstone would have set the National record for diameter but for the the record for the Vivian, SD hailstone that fell two months prior. Kentucky All-Time Maximum Temperature 114 degrees F 19300728 19300728 Greensburg 153430 E Kentucky All-Time Minimum Temperature -37 degrees F 19940119 19940119 Shelbyville 157324 E Kentucky All-Time Greatest 24-Hour Precipitation 11.28 inches 20230718 20230719 Mayfield 6SW KY Mesonet - PRYB NSA The previous record of 10.48 inches set back on March 1, 1997 in Louisville was determined to be a calendar-day record rather than a 24-hour record. The 24-hour record should have been 10.50 inches from 1AM CST March 1 to 1AM CST March 2, 1997 from the same event in Louisville. This new record value of 11.28 inches from Mayfield exceeds both values. Kentucky All-Time Maximum 24-Hour Snowfall 26 inches 19420303 19420303 Simers 157396 N Kentucky All-Time Maximum Snow Depth 31 inches 19780120 19780120 La Grange 154595 E Kentucky Maximum Wind Gust 120.1 mph 20211210 20211210 Princeton 2 SE Kentucky Mesonet SA An EF-4 tornado caused extensive damage along a 163-mile long path in western Kentucky on December 10, 2021. Two Kentucky Mesonet sites were situated along the path of the tornado with one station measuring a wind gust of 120.1 mph, exceeding the previous record of 100.8 mph set at Kentucky Mesonet station Murray 1W (MRRY) on April 26, 2011. Louisiana All-Time Maximum Temperature 114 degrees F 19360810 19360810 Plain Dealing 4W 167344 E Louisiana All-Time Minimum Temperature -16 degrees F 18990213 18990213 Minden 166244 E Louisiana All-Time Greatest 24-Hour Precipitation 22 inches 19620828 19620829 Hackberry 163979 E Louisiana All-Time Maximum 24-Hour Snowfall 13 inches 19600213 19600213 Colfax 161941 NA The 13.0 inches observed at Colfax on February 13, 1960 is the greatest 24-hr snowfall that could be confirmed for Louisiana. It is likely that higher 24-hr amounts fell during the Valentine's Day blizzard of February 13-15, 1895 (in which storm totals of 14 to 24 inches were prevalent from Galveston, TX to Lake Charles, LA) as well as the blizzard of December 21-22, 1929. However, all reported snow falls from these events appear to be accumulated amounts from which daily totals cannot be reliably extracted. Louisiana All-Time Maximum Snow Depth 24 inches 18950215 18950215 Rayne 167678 N Maine All-Time Maximum Temperature 105 degrees F 19110710 19110710 North Bridgton 175875 E1 Maine All-Time Maximum Temperature 105 degrees F 19110704 19110704 North Bridgton 175875 E1 Maine All-Time Minimum Temperature -50 degrees F 20090116 20090116 Big Black River (nr. Saint Pamphile, PQ) USGS BBRM1 NS The record minimum temperature of -50 degrees F was observed by an automated observing station operated by the US Geological Survey (USGS) at a river gage on the Big Black River near the Canadian border. The data are archived by the USGS, and the validity of the observation was confirmed by the State Climate Extremes Committee. The value also ties observations in NH and VT for the coldest temperature recorded for the Northeast region of the United States. Maine All-Time Greatest 24-Hour Precipitation 13.32 inches 19961020 19961021 Portland 14764 E Maine All-Time Maximum 24-Hour Snowfall 40 inches 19621230 19621230 Orono 176430 N Maine All-Time Maximum Snow Depth 84 inches 19690228 19690228 Farmington 172765 E Maryland All-Time Maximum Temperature 109 degrees F 19360710 19360710 Cumberland 182280 E3 Maryland All-Time Maximum Temperature 109 degrees F 19360710 19360710 Frederick 183348 E3 Maryland All-Time Maximum Temperature 109 degrees F 19180807 19180807 Cumberland 182280 E3 Maryland All-Time Maximum Temperature 109 degrees F 19180806 19180806 Cumberland 182280 E3 Maryland All-Time Maximum Temperature 109 degrees F 19180806 19180806 Keedysville 184780 E3 Maryland All-Time Maximum Temperature 109 degrees F 18980703 18980703 Boettcherville 180960 E3 Maryland All-Time Minimum Temperature -40 degrees F 19120113 19120113 Oakland 186620 E Maryland All-Time Greatest 24-Hour Precipitation 14.75 inches 18970726 18970727 Jewell (nr. Friendship) 184650 E Maryland Maximum Annual Precipitation Total 84.56 inches 20180101 20181231 Catonsville 1.2 NW CoCoRaHS MD-BL-39 NS Maryland All-Time Maximum 24-Hour Snowfall 31 inches 19420329 19420329 Clear Spring 1ENE 181890 E Maryland All-Time Maximum Snow Depth 54 inches 19930315 19930315 Frostburg 2 183415 E Massachusetts All-Time Maximum Temperature 107 degrees F 19750802 19750802 Chester 191430 E2 Massachusetts All-Time Maximum Temperature 107 degrees F 19750802 19750802 New Bedford 195246 E2 Massachusetts All-Time Minimum Temperature -35 degrees F 19810112 19810112 Chester 191430 E1 Massachusetts All-Time Minimum Temperature -35 degrees F 19430215 19430215 Coldbrook 191589 E1 Massachusetts All-Time Minimum Temperature -35 degrees F 19040105 19040105 Taunton 198367 E1 Massachusetts All-Time Greatest 24-Hour Precipitation 18.15 inches 19550818 19550819 Westfield 199191 E Massachusetts All-Time Maximum 24-Hour Snowfall 29 inches 19970401 19970401 Natick 195175 E Massachusetts All-Time Maximum Snow Depth 62 inches 19960113 19960113 Great Barrington Airport 193208 E Michigan All-Time Maximum Temperature 112 degrees F 19360713 19360713 Mio 205531 E2 Michigan All-Time Maximum Temperature 112 degrees F 19360713 19360713 Stanwood 207834 E2 Michigan All-Time Minimum Temperature -51 degrees F 19340209 19340209 Vanderbilt 208417 E Michigan All-Time Greatest 24-Hour Precipitation 12.92 inches 20190720 20190720 6E Fountain N/A NSA The 2019 value replaced the previous record of 9.78 inches, set at Bloomingdale on 31 August 1914. View the report associated with this investigation. Michigan All-Time Maximum 24-Hour Snowfall 32 inches 19851202 19851202 Herman 203744 N Michigan All-Time Maximum Snow Depth 117 inches 19480131 19480131 Eagle Harbor 202332 N1 Michigan All-Time Maximum Snow Depth 117 inches 19480130 19480130 Eagle Harbor 202332 N1 Michigan All-Time Maximum Snow Depth 117 inches 19480129 19480129 Eagle Harbor 202332 N1 Michigan All-Time Maximum Snow Depth 117 inches 19480128 19480128 Eagle Harbor 202332 N1 Michigan All-Time Maximum Snow Depth 117 inches 19480127 19480127 Eagle Harbor 202332 N1 Minnesota All-Time Maximum Temperature 115 degrees F 19170729 19170729 Beardsley 210541 N1A The previously reported record of 114 degrees F was reported by observer at Moorhead on 7\/6\/1936 as 113.6 degrees F (unlikely to be accurate given the 1-degree precision of the mercury in glass thermometer in use at the time), and rounded to 114 degrees F. The extreme reported above for Beardsley was observed as 114.5 degrees F and has been rounded to 115 degrees F per current rounding practices. Minnesota All-Time Minimum Temperature -60 degrees F 19960202 19960202 Tower 218311 E Minnesota All-Time Greatest 24-Hour Precipitation 15.1 inches 20070819 20070819 Hokah 1S 213808 NS Minnesota All-Time Maximum 24-Hour Snowfall 36 inches 19940107 19940107 Wolf Ridge ELC 219134 E Minnesota All-Time Maximum Snow Depth 88 inches 19690221 19690221 Meadowlands 1NNW 215298 E1 Minnesota All-Time Maximum Snow Depth 88 inches 19690220 19690220 Meadowlands 1NNW 215298 E1 Minnesota All-Time Maximum Snow Depth 88 inches 19690219 19690219 Meadowlands 1NNW 215298 E1 Minnesota All-Time Maximum Snow Depth 88 inches 19690218 19690218 Meadowlands 1NNW 215298 E1 Minnesota All-Time Maximum Snow Depth 88 inches 19690217 19690217 Meadowlands 1NNW 215298 E1 Minnesota All-Time Maximum Snow Depth 88 inches 19690216 19690216 Meadowlands 1NNW 215298 E1 Minnesota All-Time Maximum Snow Depth 88 inches 19690215 19690215 Meadowlands 1NNW 215298 E1 Mississippi All-Time Maximum Temperature 115 degrees F 19300729 19300729 Holly Springs 2N 224168 E Mississippi All-Time Minimum Temperature -19 degrees F 19660130 19660130 Corinth 221962 E Mississippi All-Time Greatest 24-Hour Precipitation 15.68 inches 19680709 19680709 Columbus 221870 E Mississippi All-Time Maximum 24-Hour Snowfall 18 inches 19631223 19631223 Mt. Pleasant 226084 N2 Mississippi All-Time Maximum 24-Hour Snowfall 18 inches 19631223 19631223 Mt. Tunica 2 228998 N2 Mississippi All-Time Maximum Snow Depth 18 inches 19631223 19631223 Mount Pleasant 226084 N Missouri All-Time Maximum Temperature 118 degrees F 19540714 19540714 Union 238515 E3 Missouri All-Time Maximum Temperature 118 degrees F 19540714 19540714 Warsaw 238733 E3 Missouri All-Time Minimum Temperature -40 degrees F 19050213 19050213 Warsaw 238733 E Missouri All-Time Greatest 24-Hour Precipitation 18.18 inches 19650720 19650720 Edgerton 232474 E Missouri All-Time Maximum 24-Hour Snowfall 24 inches 19790225 19790225 Cape Girardeau 03935 N3 Missouri All-Time Maximum 24-Hour Snowfall 24 inches 19790225 19790225 Jackson 234226 N3 Missouri All-Time Maximum Snow Depth 36 inches 19600320 19600320 Union 238515 E1 Missouri All-Time Maximum Snow Depth 36 inches 19600319 19600319 Union 238515 E1 Montana All-Time Maximum Temperature 117 degrees F 19370705 19370705 Medicine Lake 245572 E1 Montana All-Time Maximum Temperature 117 degrees F 18930720 18930720 Glendive 243581 E1 Montana All-Time Minimum Temperature -70 degrees F 19540120 19540120 Rogers Pass 247156 E Montana All-Time Greatest 24-Hour Precipitation 11.5 inches 19210620 19210620 Circle (Springbrook) 247796 E Montana All-Time Maximum 24-Hour Snowfall 48 inches 20031227 20031227 Millegan 14SE 245712 E1 Montana All-Time Maximum 24-Hour Snowfall 48 inches 19820529 19820529 Shonkin 7S 14SE 247540 E1 Montana All-Time Maximum Snow Depth 147 inches 19750218 19750218 Summit 247978 E Nebraska All-Time Maximum Temperature 118 degrees F 19360724 19360724 Minden 255565 E1 Nebraska All-Time Maximum Temperature 118 degrees F 19360717 19360717 Hartington 253630 E1 Nebraska All-Time Maximum Temperature 118 degrees F 19340715 19340715 Geneva 253175 E1 Nebraska All-Time Minimum Temperature -47 degrees F 19891222 19891222 Oshkosh 256385 E1 Nebraska All-Time Minimum Temperature -47 degrees F 18990212 18990212 Bridgeport 251145 E1 Nebraska All-Time Greatest 24-Hour Precipitation 13.15 inches 19500708 19500709 York 259510 E Nebraska All-Time Maximum 24-Hour Snowfall 27 inches 20061221 20061221 Dalton 252145 N Nebraska All-Time Maximum Snow Depth 44 inches 19360216 19360216 Fremont 253050 N Nebraska Hail: Weight 1.34 pounds 20030622 20030622 Aurora EA The Aurora hailstone holds the title of the largest circumference hail stone observed to have fallen in the United States. The Vivian, SD hailstone of 7\/23\/2010 is the largest in diameter and in weight. The weight listed here for the Aurora hail stone is the weight of the fractured remnant of the stone (Knight and Knight, 2005) and thus is likely a sizable underestimate of the true stone weight. Nebraska Hail: Circumference 18.75 inches 20030622 20030622 Aurora EA The Aurora hailstone holds the title of the largest circumference hail stone observed to have fallen in the United States. The Vivian, SD hailstone of 7\/23\/2010 is the largest in diameter and in weight. The weight listed here for the Aurora hail stone is the weight of the fractured remnant of the stone (Knight and Knight, 2005) and thus is likely a sizable underestimate of the true stone weight. Nebraska Hail: Diameter 7 inches 20030622 20030622 Aurora EA The Aurora hailstone holds the title of the largest circumference hail stone observed to have fallen in the United States. The Vivian, SD hailstone of 7\/23\/2010 is the largest in diameter and in weight. The weight listed here for the Aurora hail stone is the weight of the fractured remnant of the stone (Knight and Knight, 2005) and thus is likely a sizable underestimate of the true stone weight. Nevada All-Time Maximum Temperature 125 degrees F 19940629 19940629 Laughlin 264480 E Nevada All-Time Minimum Temperature -50 degrees F 19370108 19370108 San Jacinto 267284 E Nevada All-Time Greatest 24-Hour Precipitation 7.78 inches 20041020 20041020 Mount Charleston 265400 N Nevada All-Time Maximum 24-Hour Snowfall 36 inches 19961221 19961221 Dagget Pass 262119 N Nevada All-Time Maximum Snow Depth 271 inches 19110313 19110313 Spooners Station 267710 N1 Nevada All-Time Maximum Snow Depth 271 inches 19110312 19110312 Spooners Station 267710 N1 New Hampshire All-Time Maximum Temperature 106 degrees F 19110704 19110704 Nashua 275712 E New Hampshire All-Time Minimum Temperature -50 degrees F 18850122 18850122 Mount Washington 14755 NA Value of -50 degrees F exceeds the previously reported all-time minimum temperature extreme of -46 on 1\/8\/1968. The -50 degrees F is not yet present in NCDC's digital data files but exists on observation forms and publications in NCDC archives. The value ties with Vermont and Maine for coldest temperature recorded in the Northeast region of the United States. New Hampshire All-Time Greatest 24-Hour Precipitation 11.07 inches 19961020 19961021 Mount Washington 14755 N New Hampshire All-Time Maximum 24-Hour Snowfall 49.3 inches 19690225 19690225 Mount Washington 14755 N New Hampshire All-Time Maximum Snow Depth 164 inches 19690227 19690227 Pinkham Notch 276818 N New Jersey All-Time Maximum Temperature 110 degrees F 19360710 19360710 Runyon 287825 E New Jersey All-Time Minimum Temperature -34 degrees F 19040105 19040105 River Vale 287620 E New Jersey All-Time Greatest 24-Hour Precipitation 14.81 inches 19390819 19390820 Tuckerton 288899 E New Jersey Maximum Annual Precipitation Total 90.65 inches 20110101 20111231 WEST MILFORD TWP 3.2 NE CoCoRaHS NJ-PS-16 NA This record value was initially evaluated and scientifically validated by the SCEC in 2012. The non-archival status of the station's network was a concern at the time, delaying the approval. This concern is now moot, as the observing system is ingested into a permanent Federal archive. New Jersey All-Time Maximum 24-Hour Snowfall 29.7 inches 19471226 19471227 Long Branch 284987 NSA The previous record of 32 inches, reported at Charlotteburg Reservoir (COOP ID: 287332) on 14 December 1915, was determined to have fallen during a span of time exceeding 24 hours, per notes indicated on the observer form, and was subsequently invalidated and replaced by the next-largest known 24-hour snowfall value located in Long Branch. New Jersey All-Time Maximum Snow Depth 52 inches 19610205 19610205 Canistear Reservoir 281327 E New Mexico All-Time Maximum Temperature 122 degrees F 19940627 19940627 Waste Isolation Pilot Plant (nr. Loving) 299569 E New Mexico All-Time Minimum Temperature -50 degrees F 19510201 19510201 Gavilan 293505 E New Mexico All-Time Greatest 24-Hour Precipitation 11.28 inches 19550518 19550519 Lake Maloya 294742 E New Mexico All-Time Maximum 24-Hour Snowfall 41 inches 19640203 19640203 Kelly Ranch 294461 N New Mexico All-Time Maximum Snow Depth 96 inches 19410315 19410315 Lee's Ranch 294903 N New York All-Time Maximum Temperature 108 degrees F 19260722 19260722 Troy 308597 E New York All-Time Minimum Temperature -52 degrees F 19790218 19790218 Old Forge 306184 E1 New York All-Time Greatest 24-Hour Precipitation 13.57 inches 20140812 20140813 Long Island MacArthur Airport 04781 New York All-Time Maximum 24-Hour Snowfall 50 inches 19660201 19660201 Camden 301110 NA An unofficial but widely accepted 24-hr snow fall observation of 54 inches was recorded at Barnes Corner (Tug Hill Plateau) in January 1976. In February 2020, the 50-inch value at Camden in 1966, already present in the record, but flagged as invalid, was determined by the SCEC to be valid. It was established as the record, replacing the previously accepted record of 49 inches, at Watertown on 14-15 November 1900. View the report from the associated investigation. In November 2022, significant and persistent lake effect snowfall impacted several areas east of lakes Erie and Ontario, but no new record was determined. A report was released to highlight the details from this investigation. New York All-Time Maximum Snow Depth 119 inches 19430420 19430420 Whiteface Mountain 309383 N A snow depth value of 130 inches at Richland on 5 March 1947 was reviewed and rejected as a potential record. View the report associated with this investigation. North Carolina All-Time Maximum Temperature 110 degrees F 19830821 19830821 Fayetteville 93740 E North Carolina All-Time Minimum Temperature -34 degrees F 19850121 19850121 Mount Mitchell 315923 E North Carolina All-Time Greatest 24-Hour Precipitation 22.22 inches 19160715 19160716 Altapass 310160 E North Carolina Maximum Annual Precipitation Total 139.94 inches 20180101 20181231 Mt. Mitchell 315923 NS North Carolina All-Time Maximum 24-Hour Snowfall 36 inches 19930313 19930313 Mt. Mitchell 315923 N In May 2016, the SCEC considered a reported 41-inch snowfall event observed in January 2016 at Mt. Mitchell (GHCN-D identifier USC00315923). The value was determined to be invalid, and the existing record of 36 inches set in March 1993 was thereby upheld. North Carolina All-Time Maximum Snow Depth 50 inches 19930314 19930314 Mount Mitchell 315923 N1 North Carolina All-Time Maximum Snow Depth 50 inches 19420306 19420306 Mount Mitchell 315921 N1 North Carolina All-Time Maximum Snow Depth 50 inches 19420305 19420305 Mount Mitchell 315921 N1 North Carolina All-Time Maximum Snow Depth 50 inches 19420304 19420304 Mount Mitchell 315921 N1 North Carolina All-Time Maximum Snow Depth 50 inches 19420303 19420303 Mount Mitchell 315921 N1 North Dakota All-Time Maximum Temperature 121 degrees F 19360706 19360706 Steele 328366 E North Dakota All-Time Minimum Temperature -60 degrees F 19360215 19360215 Parshall 326867 E North Dakota All-Time Greatest 24-Hour Precipitation 8.1 inches 19750629 19750629 Litchville 325230 E North Dakota All-Time Maximum 24-Hour Snowfall 27 inches 19840427 19840427 Minot Airport 24013 N North Dakota All-Time Maximum Snow Depth 65 inches 18970312 18970312 Berlin 320720 N1 North Dakota All-Time Maximum Snow Depth 65 inches 18970311 18970311 Berlin 320720 N1 Ohio All-Time Maximum Temperature 113 degrees F 19340721 19340721 Gallipolis (near) 333029 E Ohio All-Time Minimum Temperature -39 degrees F 18990210 18990210 Milligan 335310 E Ohio All-Time Greatest 24-Hour Precipitation 10.75 inches 19950807 19950808 Lockington Dam (nr. Sidney, Shelby Co. OH) EA Value is published in the August 1995 Storm Data publication and is from a reliable gauge. Higher 24-hr amounts may have occurred in conjunction with a line of severe storms that impacted Northwest Ohio on July 4-5, 1969. Ohio All-Time Maximum 24-Hour Snowfall 30 inches 19010420 19010420 Warren 3S 338769 N Ohio All-Time Maximum Snow Depth 47 inches 19961114 19961114 Chardon 331458 N Oklahoma All-Time Maximum Temperature 120 degrees F 19360812 19360812 Altus 340179 E1A Oklahoma All-Time Maximum Temperature 120 degrees F 19360810 19360810 Poteau 347246 E1A Oklahoma All-Time Maximum Temperature 120 degrees F 19360719 19360719 Altus 340179 E1A Oklahoma All-Time Maximum Temperature 120 degrees F 19360718 19360718 Alva 340193 E1A A 120 degrees F observed at Tipton observed by an Oklahoma Mesonet automated weather station on June 27, 1994 was originally approved. However, this value was later withdrawn after problems with the instrumentation configuration were discovered several years later. Oklahoma All-Time Minimum Temperature -31 degrees F 20110210 20110210 Nowata NOWA (OK Mesonet) NSA Oklahoma All-Time Greatest 24-Hour Precipitation 15.68 inches 19731011 19731011 Enid 342912 E Oklahoma All-Time Maximum 24-Hour Snowfall 27 inches 20110209 20110210 Spavinaw 348380 NSA The 24-hr snow fall at Woodward and Freedom fell in conjunction with a spring blizzard that set snow fall records in Oklahoma, Kansas and Texas. The State Climate Extremes Committee verified the validity of the observations at Woodward and Freedom. Oklahoma All-Time Maximum Snow Depth 36 inches 19710222 19710222 Buffalo 2SSW 341243 N Oklahoma Hail: Diameter 6 inches 20110523 20110523 2 mi. N of Gotebo NSA The state hailstone record is understood to be the largest documented stone, though larger stones have likely fallen during territorial and state history. Other reports from prior dates did not provide sufficient documentary evidence. Oklahoma Maximum Wind Gust 150.8 mph 20110524 20110524 El Reno ELRE (OK Mesonet) NSA Oregon All-Time Maximum Temperature 119 degrees F 20210629 20210629 Moody Farms Agrimet USBR Mesonet SA A heat wave across the Pacific Northwest in late June 2021 broke a number of daily maximum temperature records. In addition, an Oregon SCEC determined that two reliable stations, Pelton Dam (COOP ID: 356532) and a U.S. Bureau of Reclamation mesonet station, Moody Farms Agriment, each tied the state maximum temperature record of 119 degrees F.. In February 2022, the Prineville, OR, (COOP ID: 356883) value of 119 degrees F, that occurred on July 29, 1898, was invalidated and removed from the SCEC records table. Oregon All-Time Maximum Temperature 119 degrees F 20210629 20210629 Pelton Dam 356532 SA A heat wave across the Pacific Northwest in late June 2021 broke a number of daily maximum temperature records. In addition, an Oregon SCEC determined that two reliable stations, Pelton Dam (COOP ID: 356532) and a U.S. Bureau of Reclamation mesonet station, Moody Farms Agriment, each tied the state maximum temperature record of 119 degrees F.. In February 2022, the Prineville, OR, (COOP ID: 356883) value of 119 degrees F, that occurred on July 29, 1898, was invalidated and removed from the SCEC records table. Oregon All-Time Maximum Temperature 119 degrees F 18980810 18980810 Pendleton 356541 E1 Oregon All-Time Minimum Temperature -54 degrees F 19330210 19330210 Seneca 357675 E1 Oregon All-Time Minimum Temperature -54 degrees F 19330209 19330209 Ukiah 358726 E1 Oregon All-Time Greatest 24-Hour Precipitation 11.77 inches 20061106 20061106 Nehalem 9NE 355971 N Oregon All-Time Maximum 24-Hour Snowfall 47 inches 19800109 19800109 Hood River ES 354003 N Oregon All-Time Maximum Snow Depth 252 inches 19830403 19830403 Crater Lake NP HQ 351946 N Pennsylvania All-Time Maximum Temperature 111 degrees F 19360710 19360710 Phoenixville 366927 E1 Pennsylvania All-Time Maximum Temperature 111 degrees F 19360709 19360709 Phoenixville 366927 E1 Pennsylvania All-Time Minimum Temperature -42 degrees F 19040105 19040105 Smethport 368190 E Pennsylvania All-Time Greatest 24-Hour Precipitation 13.5 inches 19720622 19720622 York 3SSW Pump Stn 369933 NA Arguably the greatest 24-hour rainfall on record outside of the tropics occurred around Smethport, PA on July 17, 1942. A post-event survey by the Weather Bureau provided a widely accepted maximum storm rainfall of 34.50 inches within a 12 hour period, of which an estimated 30.60 inches fell in just 6 hours. However, the greatest observed 24-hr rain fall for Pennsylvania occurred in conjunction with Hurricane Agnes in 1972. Pennsylvania All-Time Maximum 24-Hour Snowfall 41 inches 19580215 19580216 Lakeville 1NNE 364733 NSA Lakeville 1NNE was the official name for this station when the record was set during 1958. The name of the station when the record was identified in 2021 was Lakeville 2NNE, which is reflected in the station metadata. This Lakeville value replaced the previously reported record of 38 inches, set at Morgantown (COOP ID: 365956) on 20 March 1958. More details are available in the report associated with this investigation. Pennsylvania Monthly Maximum Snowfall 117.8 inches 20100201 20100228 Laurel Summit 364839 NSA A potential monthly snowfall record of 120.9 inches was reported for December 2017 at Erie International Airport. This value was examined by the SCEC during the following year. The SCEC found that observational practices associated with the Erie total reduced confidence in the value. The SCEC determined by a 4-1 vote that the existing Laurel Summit record be upheld.View Erie Dec 2017 reportView Laurel Summit Feb 2010 report Pennsylvania All-Time Maximum Snow Depth 60 inches 19580323 19580323 Gouldsboro 363394 N1 Pennsylvania All-Time Maximum Snow Depth 60 inches 19580322 19580322 Gouldsboro 363394 N1 Puerto Rico All-Time Maximum Temperature 104 degrees F 19960702 19960702 Mona Island 666258 NA Listed record value of 104 degrees F is being reviewed. If found to be invalid, the next highest temperature is 100 degrees F on August 21, 2003 at Ponce 4E. Puerto Rico All-Time Minimum Temperature 40 degrees F 19850327 19850327 Rincon 668126 N1 Puerto Rico All-Time Minimum Temperature 40 degrees F 19660124 19660124 San Sebastian 668881 N1 Puerto Rico All-Time Minimum Temperature 40 degrees F 19110309 19110309 Aibonito 660158 N1 Puerto Rico All-Time Greatest 24-Hour Precipitation 23.75 inches 19851007 19851007 Toro Negro Forest 669432 NA Value was observed during the passage of Tropical Storm Isabel (October 4-8, 1985). Puerto Rico All-Time Maximum 24-Hour Snowfall inches N/A E Puerto Rico All-Time Maximum Snow Depth inches N/A E Rhode Island All-Time Maximum Temperature 104 degrees F 19750802 19750802 Providence 14765 E Rhode Island All-Time Minimum Temperature -28 degrees F 19420111 19420111 Wood River Junction 379327 NA Previously reported record of -25 degrees F at Greene on February 5, 1996 could not be verified. Source is unknown and no documentation could be found. Value is exceeded by the currently reported record at Wood River Junction. Rhode Island All-Time Greatest 24-Hour Precipitation 12.13 inches 19320916 19320917 Westerly 378911 E Rhode Island All-Time Maximum 24-Hour Snowfall 30 inches 19780207 19780207 Woonsocket 379423 E Rhode Island All-Time Maximum Snow Depth 42 inches 19780207 19780207 North Foster 1E 375270 E South Carolina All-Time Maximum Temperature 113 degrees F 20120629 20120629 Columbia Univ of South Carolina 381944 NS South Carolina All-Time Minimum Temperature -19 degrees F 19850121 19850121 Caesar's Head 381256 E South Carolina All-Time Greatest 24-Hour Precipitation 14.8 inches 19990916 19990916 Myrtle Beach 386153 NA Previously listed record of 17.00 inches at Antreville on Augst 27, 1995 (Tropical Storm Jerry) was incongruent with other observations in the area, and all reliable evidence pointed to a much smaller 24-hr value. The 14.80 inches observed at Myrtle Beach on September 16, 1999 is a result of Hurricane Floyd. South Carolina Maximum Annual Precipitation Total 123.45 inches 20180101 20181231 Jocassee 8 NW 384581 NSA An annual value of 125.62 inches for the calendar year 2018 was reported by the Greenville Water Company. This annual value was considered plausible by the SCEC. However, the station was not at the time a member of an organized and reporting observation network, and therefore not considered for the record. View the associated report. South Carolina All-Time Maximum 24-Hour Snowfall 24 inches 19730209 19730210 Rimini 2SSW 387313 N South Carolina All-Time Maximum Snow Depth 29 inches 19690218 19690218 Ceasars Head 381256 N South Dakota All-Time Maximum Temperature 120 degrees F 20060715 20060715 Fort Pierre 393076 N1 South Dakota All-Time Maximum Temperature 120 degrees F 19360705 19360705 Gann Valley 393217 N1 South Dakota All-Time Minimum Temperature -58 degrees F 19360217 19360217 McIntosh 395381 E South Dakota All-Time Greatest 24-Hour Precipitation 8.74 inches 20070506 20070506 Groton 393456 NSA The reported value was evaluated by the State Climate Extremes Committee. Greater amounts have fallen in 24 hours or less across SD, but were not observed by reliable precipitation measurement gauges. A survey after the June 9, 1972 Black Hills flood indicated rainfall up to 15 inches in 6 hours may have occurred near Keystone. On June 13-14, 1976 up to 10 inches of rain may have fallen over the Black Hills, while on June 14, 1996 a near-stationary thunderstorm produced an estimated 14 inches of rain between Sturgis and Hereford. On August 17, 2007 an estimated 10.5 inches of rain fell west of Hermosa. Slow moving thunderstorms on May 8, 2018 produced large storm totals across parts of SD including an unofficial 24-hour report measuring 13.15 inches northwest of Long Lake. South Dakota All-Time Maximum 24-Hour Snowfall 52 inches 19730314 19730314 Lead 394834 N South Dakota All-Time Maximum Snow Depth 73 inches 19980301 19980301 Lead 394834 E South Dakota Hail: Weight 1.938 pounds 20100723 20100723 Vivian A The reported value has been evaluated by the National Climate Extremes Committee and found to be accurate. This hail stone is the heaviest and greatest diameter stone on record for the United States. When initially collected after the storm, the stone had a reported diameter of 11 inches, but deteriorated in the observer's freezer owing to a loss of power after the storm. The Aurora, NE hail stone remains the largest circumference stone on record for the United States. South Dakota Hail: Circumference 18.625 inches 20100723 20100723 Vivian A The reported value has been evaluated by the National Climate Extremes Committee and found to be accurate. This hail stone is the heaviest and greatest diameter stone on record for the United States. When initially collected after the storm, the stone had a reported diameter of 11 inches, but deteriorated in the observer's freezer owing to a loss of power after the storm. The Aurora, NE hail stone remains the largest circumference stone on record for the United States. South Dakota Hail: Diameter 8 inches 20100723 20100723 Vivian A The reported value has been evaluated by the National Climate Extremes Committee and found to be accurate. This hail stone is the heaviest and greatest diameter stone on record for the United States. When initially collected after the storm, the stone had a reported diameter of 11 inches, but deteriorated in the observer's freezer owing to a loss of power after the storm. The Aurora, NE hail stone remains the largest circumference stone on record for the United States. Tennessee All-Time Maximum Temperature 113 degrees F 19300809 19300809 Perryville 407099 E1 Tennessee All-Time Maximum Temperature 113 degrees F 19300729 19300729 Perryville 407099 E1 Tennessee All-Time Minimum Temperature -32 degrees F 19171230 19171230 Mountain City 406287 E Tennessee All-Time Greatest 24-Hour Precipitation 20.73 inches 20210821 20210821 McEwen N/A NSA The 2021 value replaced the previous record of 13.60 inches, set at Milan (COOP ID: 406012) on 13 September 1982. Tennessee All-Time Maximum 24-Hour Snowfall 30 inches 19930314 19930314 Mount Leconte 406328 N Tennessee All-Time Maximum Snow Depth 63 inches 19930315 19930315 Mount Leconte 406328 N1 Tennessee All-Time Maximum Snow Depth 63 inches 19930314 19930314 Mount Leconte 406328 N1 Texas All-Time Maximum Temperature 120 degrees F 19940628 19940628 Monahans 415999 E1 Texas All-Time Maximum Temperature 120 degrees F 19360812 19360812 Seymour 418221 E1 Texas All-Time Minimum Temperature -23 degrees F 19330208 19330208 Seminole 418201 E1 Texas All-Time Minimum Temperature -23 degrees F 18990212 18990212 Tulia 6NE 419176 SA1 Historical value at Tulia 6NE became available upon digitization and update of previously paper-bound data. It was examined retroactively, found, to be valid and tied the prior stated record. Texas All-Time Greatest 24-Hour Precipitation 42 inches 19790725 19790726 Alvin EA The 24-hour rainfall of 42.00 inches was reported from an observer 8.5 miles west of Alvin, Texas between 7 AM July 25th and 7 AM July 26th, 1979 in conjunction with Tropical Storm Claudette. Observer reported that the 10-inch gauge was overflowing at his 1 AM reading, and so the 42 inches may be underreported by at least 3 inches. This 42.00-in rainfall exceeds any observed 24-hr precipitation value for the United States. 43.00 inches of rain in this storm is acknowledged as the United States national record 24-hr precipitation amount, but that value appears to have been estimated in a post-storm survey and is therefore not listed here. Texas All-Time Maximum 24-Hour Snowfall 26 inches 19291220 19291221 Hillsboro 414182 NSA Historical value was examined retroactively and found to be valid and exceeded prior stated record. The previously recognized record of 25\", observed in March 2009 at Follett (GHCN-D identifier USC00413225) is documented (here). Texas All-Time Maximum Snow Depth 33 inches 19560207 19560207 Vega 2NW 419330 N Texas Hail: Weight 1.26 pounds 20210428 20210428 1 SSW Hondo N/A SA Texas Hail: Circumference 19.73 inches 20210428 20210428 1 SSW Hondo N/A SA Texas Hail: Diameter 6.416 inches 20210428 20210428 1 SSW Hondo N/A SA Texas Hail: Volume 40.239 cubic inches 20210428 20210428 1 SSW Hondo N/A SA Utah All-Time Maximum Temperature 117 degrees F 20210710 20210710 St. George 427516 ESA A 118 degrees F temperature was observed on July 4, 2007 at a Remote Automatic Weather Station (RAWS) located near the Utah Welcome Center on I-15 south of St. George. However, a decision on the validity of this value could not be determined by the State Climate Extremes Committee. View 2021 Record Report Utah All-Time Maximum Temperature 117 degrees F 19850705 19850705 St. George 427516 EA A 118 degrees F temperature was observed on July 4, 2007 at a Remote Automatic Weather Station (RAWS) located near the Utah Welcome Center on I-15 south of St. George. However, a decision on the validity of this value could not be determined by the State Climate Extremes Committee. View 2021 Record Report Utah All-Time Minimum Temperature -50 degrees F 19130105 19130105 Strawberry Tunnel (East) 422319 NA The previously reported record of -69 degrees F set at Peters Sinks on Feb 1, 1985 is widely considered an accurate observation, but no information concerning the observation or the station could be identified, and the value is heavily affected by the local terrain. The -50 degrees F at Strawberry Tunnel is the coldest temperature observation that can be verified from publicly available observations at established observation stations in Utah. Utah All-Time Greatest 24-Hour Precipitation 5.08 inches 19630201 19630201 Deer Creek Dam 422057 NA A value of 8.40 inches was reported as part of a post-flash flood survey conducted by the National Weather Service at North Odgen on September 7-8, 1991. Utah All-Time Maximum 24-Hour Snowfall 38 inches 19821202 19821202 Alta 420072 NA 55.5 inches of snow fall in 24 hours was reported at the Alta Guard Station in Alta, UT on January 5-6, 1991, but information concerning this observation or the station is unavailable and cannot be considered official. Utah All-Time Maximum Snow Depth 179 inches 19580407 19580407 Alta 420072 N1A 236 inches of snow depth were observed at the Collins snow study observation site at Alta, UT on May 19, 1983, but information concerning this observation or the station is unavailable and cannot be considered official. Utah All-Time Maximum Snow Depth 179 inches 19580405 19580405 Alta 420072 N1A 236 inches of snow depth were observed at the Collins snow study observation site at Alta, UT on May 19, 1983, but information concerning this observation or the station is unavailable and cannot be considered official. Vermont All-Time Maximum Temperature 107 degrees F 19120707 19120707 Vernon 438600 N Vermont All-Time Minimum Temperature -50 degrees F 19331230 19331230 Bloomfield 430690 E The -50 degrees F minimum temperature ties with values from NH and ME as the all-time coldest temperature for the Northeast region of the United States. Vermont All-Time Greatest 24-Hour Precipitation 9.92 inches 19990917 19990917 Mt. Mansfield 435416 N Vermont All-Time Maximum 24-Hour Snowfall 42 inches 19950205 19950205 Jay Peak 434189 N Two potential 24-hour snowfall records of 44.8 inches at Peru (COOP ID: 436335) and 42.0 inches at Landgrove 1.1 NNE (CoCoRaHS ID: VT-BN-3) over a 24-hour period on 16-17 December 2020 were examined by the SCEC during the following year. The SCEC found that observational practices associated with the measurements reduced confidence in these values. The SCEC determined by two separate 5-0 votes that the existing Jay Peak record be upheld. Vermont All-Time Maximum Snow Depth 149 inches 19690402 19690402 Mt. Mansfield 435416 N Vermont Hail: Weight 0.13125 pounds 20090716 20090716 Westford NSA A large hailstone fell in the backyard of a National Weather Service employee and was brought before the State Climate Extremes Committee for review. After a search of historical hail reports, it was determined that the hail stone was the largest ever measured for the state of Vermont. As a result of this investigation, a set of hail collection and measurement guidelines was proposed by the State Climate Extremes Committee. Vermont Hail: Circumference 6.8 inches 20090716 20090716 Westford NSA A large hailstone fell in the backyard of a National Weather Service employee and was brought before the State Climate Extremes Committee for review. After a search of historical hail reports, it was determined that the hail stone was the largest ever measured for the state of Vermont. As a result of this investigation, a set of hail collection and measurement guidelines was proposed by the State Climate Extremes Committee. Vermont Hail: Diameter 3.3 inches 20090716 20090716 Westford NSA A large hailstone fell in the backyard of a National Weather Service employee and was brought before the State Climate Extremes Committee for review. After a search of historical hail reports, it was determined that the hail stone was the largest ever measured for the state of Vermont. As a result of this investigation, a set of hail collection and measurement guidelines was proposed by the State Climate Extremes Committee. Virgin Islands (U.S.) All-Time Maximum Temperature 99 degrees F 19960623 19960623 Charlotte Amalie (St. Thomas) 11640 N1A Virgin Islands (U.S.) All-Time Maximum Temperature 99 degrees F 19940804 19940804 Charlotte Amalie (St. Thomas) 11640 N1A Virgin Islands (U.S.) All-Time Maximum Temperature 99 degrees F 19880731 19880731 Cruz Bay (St. John) 671980 N1A Virgin Islands (U.S.) All-Time Minimum Temperature 51 degrees F 19540131 19540131 Anna's Hope (St. Croix) 670260 NA Virgin Islands (U.S.) All-Time Greatest 24-Hour Precipitation 20 inches 19790904 19790904 Anna's Hope (SC) 670260 NA Virgin Islands (U.S.) All-Time Maximum 24-Hour Snowfall inches N/A EA Virgin Islands (U.S.) All-Time Maximum Snow Depth inches N/A EA Virginia All-Time Maximum Temperature 110 degrees F 19540715 19540715 Balcony Falls 440411 E1 Virginia All-Time Maximum Temperature 110 degrees F 19000707 19000707 Columbia 441929 E1 Virginia All-Time Maximum Temperature 110 degrees F 19000705 19000705 Columbia 441929 E1 Virginia All-Time Minimum Temperature -30 degrees F 19850121 19850121 Mountain Lake Biological Station 445828 E The date for the existing record of -30 degrees F at Mountain Lake Biological Station was incorrect by one day. Date listed is the correct observation date. Virginia All-Time Greatest 24-Hour Precipitation 14.28 inches 19990916 19990916 Williamsburg 2N 449151 NA Storm Data (Vol. 11, No. 8) reports associated with Hurricane Camille (August 1969) indicate \"... substantiated amounts up to 31 inches ... falling mainly in Nelson and adjacent counties ....\" The 14.28 inches at Williamsburg fell in conjunction with Hurricane Floyd. Virginia Maximum Annual Precipitation Total 94.43 inches 20180101 20181231 Sperryville 447985 NSA View the report associated with the Sperryville record. Before the Sperryville value came to light, two smaller annual totals that nevertheless exceeded the previously understood unofficial record were investigated. These were values of 89.90\" at Montebello Fish Hatchery and 87.33\" at Roanoke 5.8 SW (CoCoRaHS). These were determined not to be valid statewide precipitation records. A separate report detailing these values is available here. Virginia All-Time Maximum 24-Hour Snowfall 33.5 inches 19940303 19940303 Luray 5E 445096 E Virginia All-Time Maximum Snow Depth 47 inches 19960107 19960107 Big Meadows 440720 E Washington All-Time Maximum Temperature 120 degrees F 20210629 20210629 Hanford DOE Mesonet H100F NSA A heat wave across the Pacific Northwest in late June 2021 broke a number of daily maximum temperature records. In addition, an Washington SCEC determined that a Department of Energy mesonet station, Hanford H100F, reached 120 degrees F, exceeding the previous record of 118 degrees F set at Ice Harbor Dam (COOP ID: 453993) on August 5, 1961 and Wahluke (COOP ID: 458903) on July 24, 1928. Washington All-Time Minimum Temperature -48 degrees F 19681230 19681230 Mazama 455133 E2 Washington All-Time Minimum Temperature -48 degrees F 19681230 19681230 Winthrop 459376 E2 Washington All-Time Greatest 24-Hour Precipitation 14.26 inches 19861123 19861124 Mt. Mitchell #2 455668 E Washington All-Time Maximum 24-Hour Snowfall 65 inches 19940224 19940224 Crystal Mountain Ski Resort NWAC NA The observation of 65.0 inches of snow that fell in 24 hours at the Crystal Mountain ski resort on February 24, 1994 is archived at the Northwest Weather and Avalanche Center. The greatest 24-hr snow fall observed at an official NOAA weather station in Washington is 52.0 inches observed at Winthrop on January 21, 1935. Washington All-Time Maximum Snow Depth 367 inches 19560310 19560310 Rainier Paradise RS 456898 N1 Washington All-Time Maximum Snow Depth 367 inches 19560309 19560309 Rainier Paradise RS 456898 N1 West Virginia All-Time Maximum Temperature 112 degrees F 19360710 19360710 Martinsburg 13734 E1 West Virginia All-Time Maximum Temperature 112 degrees F 19300804 19300804 Moorefield 466163 E1 West Virginia All-Time Minimum Temperature -37 degrees F 19171230 19171230 Lewisburg 465224 E West Virginia All-Time Greatest 24-Hour Precipitation 12.02 inches 19490618 19490618 Brushy Run 461204 NA It is widely accepted that the greatest precipitation in a 24 hr period for West Virginia was an estimated 19.00 inches that reportedly fell in 2 hrs and 10 minutes on July 18, 1889 at Rockport during a cloudburst that caused Tygart Creek to rise 22 feet in one hour. However, this value has not been confirmed. West Virginia Maximum Annual Precipitation Total 96.99 inches 20180101 20181231 Parsons 3SE (Hendricks) USC00466867 NS West Virginia All-Time Maximum 24-Hour Snowfall 35 inches 19980127 19980128 Flat Top 463072 NA The 35.0 inches of snowfall reported at Flat Top fell from 10 AM on January 27th to 10 AM on January 28th, 1998. Observation-time values for each day are 30.0 and 8.0 inches, respectively. West Virginia Monthly Maximum Snowfall 158.2 inches 20100201 20100228 Bayard 460527 NA West Virginia All-Time Maximum Snow Depth 62 inches 19780308 19780308 Snowshoe 468308 N Wisconsin All-Time Maximum Temperature 114 degrees F 19360713 19360713 Wisconsin Dells 479319 E Wisconsin All-Time Minimum Temperature -55 degrees F 19960204 19960204 Couderay 471847 E1 Wisconsin All-Time Minimum Temperature -55 degrees F 19960202 19960202 Couderay 471847 E1 Wisconsin All-Time Greatest 24-Hour Precipitation 11.72 inches 19460624 19460624 Mellen 475286 E Wisconsin All-Time Maximum 24-Hour Snowfall 26 inches 19041226 19041227 Neillsville 475808 E Wisconsin All-Time Maximum Snow Depth 83 inches 19330406 19330406 Flambeau Reservoir 472814 N Wyoming All-Time Maximum Temperature 115 degrees F 19880715 19880715 Diversion Dam 482595 N1 Wyoming All-Time Maximum Temperature 115 degrees F 19830808 19830808 Basin 480540 N1 Wyoming All-Time Minimum Temperature -66 degrees F 19330209 19330209 Riverside Ranger Stn. (Yellowstone NP) EA Original observation of -66 degrees F at Riverside Ranger Station on February 9, 1933 is maintained in Department of Interior archives. Wyoming All-Time Greatest 24-Hour Precipitation 6.06 inches 19850801 19850801 Cheyenne 24018 E Wyoming All-Time Maximum 24-Hour Snowfall 49 inches 19240321 19240321 Hunter Station 484770 N Wyoming All-Time Maximum Snow Depth 128 inches 19430204 19430204 Grassy Lake Dam 484050 N