Mount Airy
North Carolina, United States Of America
37.00 ° N
81.00 ° W
1030 ft
Warm temperate moist forest
Cfa Humid subtropical climate
+
DOak Temperate oceanic climate with hot summer with cool winter
Traditional Koppen classification: Cfa (Humid subtropical climate)

Official definition:
  • C – temperature of warmest month greater than or equal to 10 °C and temperature of coldest month less than 18 °C, but higher than -3 °C
  • f – precipitation is relatively evenly distributed throughout the year and do not fulfill classification criteria for s or w type
  • a - temperature of warmest month above 22 °C

The Cfa climate type is typical for areas on the Eastern coasts of continents, mostly between 20th and 30th latitude. The average temperature of the warmest month is higher than 22 °C and the temperature throughout the year range from usually -3 to 18 °C. In the winter, however, in some cases it can be well below freezing point.

Precipitation is relatively evenly distributed during the entire year. Humidity tends to be higher during the summer half year, when the conditions resemble the humid tropical climate. The total annual rainfall can be quite variable, most commonly between 650 and 2500 mm. Thunderstorms during the summer are frequent.

Cfa climate type can be found for example in the Southeastern USA, Northern part of Argentina, Uruguay and Southern part of Brazil, Southern Japan and South of China.


Modern Trewartha classification: DOak (Temperate oceanic climate with hot summer with cool winter)

In the Trewartha classification, the category D is like in the Koppen classification, assigned to regions in the temperate zone. The criterion for this type of climate is four to seven months with average temperature of more than 10 °C. In general it is further subdivided into two subtypes: oceanic and continental. These differ in their average temperature of the coldest month.

Temperate climate is characterized by four distinct seasons and there are substantial differences between the temperatures in the summer and in the winter, but the absolute values are not so extreme and the change is gradual.

In case of the oceanic type, winter is milder than that of the continental type and the temperature of the coldest month usually above 0 °C. The weather conditions are to a large extent influenced by the nearby ocean, which causes smaller temperature variation between the individual seasons. Typical is Western wind and so we often find this type of climate on Western coasts of continents, such as for example in Western Europe or Western coast of the U.S., in latitudes between 40 and 60 ° in America and 40 and 65 ° in Europe. These regions tend to be densely inhabited.

  • hot summer: warmest month with average temperature between 23 and 28 °C
  • cool winter: coldest month with average temperature between 0 and 10 °C

Summary

57 °F
44 / 69

45.6 in


Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F) 25.027.035.042.052.060.064.063.056.044.036.029.0 44.0
Avg Temperature(°F) 36.039.048.057.065.072.076.075.069.058.048.039.0 57.0
Max Temperature (°F) 47.051.062.071.078.085.088.087.081.071.061.050.0 69.0
Range 22.024.027.029.026.025.024.024.025.027.025.021.0 25.0


Max month Min month Annual range
Min Temperature Jul Jan 39.0°F
Avg Temperature Jul Jan 40.0°F
Max Temperature Jul Jan 41.0°F
Temperature range Apr Dec 63.0°F
Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F)
Avg Temperature(°F)
Max Temperature(°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Min Temperature 52.0 35.0 43.00 17.0 64.0 60.0 62.33 4.0 56.0 36.0 45.33 20.0 29.0 25.0 27.00 4.0
Avg Temperature 65.0 48.0 56.67 17.0 76.0 72.0 74.33 4.0 69.0 48.0 58.33 21.0 39.0 36.0 38.00 3.0
Max Temperature 78.0 62.0 70.33 16.0 88.0 85.0 86.67 3.0 81.0 61.0 71.00 20.0 51.0 47.0 49.33 4.0

Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F) 36.039.048.057.065.072.076.075.069.058.048.039.0 57.0


Max month Min month Annual range
Avg Temperature Jul Jan 40.0°F
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Temperature 65.0 48.0 56.67 17.0 76.0 72.0 74.33 4.0 69.0 48.0 58.33 21.0 39.0 36.0 38.00 3.0


Humidity
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%) -9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0 57.0


Max month Min month Annual range
Avg Humidity 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0.0%
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Humidity -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0


Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 3.33.44.23.74.43.74.53.84.23.83.23.4 3.8 45.6
Wetdays -9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999 -9999 -119988
Wetdays ratio (%) -32254.8
-9999,10030
-35710.7
-9999,10027
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-32873.4
-32873.4,32973.4


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Jul Nov Spring Winter 1.3in
Wetdays 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec Autumn Spring, Summer, Winter 0
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)
Wetdays / month


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 4.4 3.7 0.6 12.3 4.5 3.7 0.8 12.1 4.2 3.2 1.0 11.2 3.4 3.3 0.2 10.1
Wetdays -9999 -9999 0 -29997 -9999 -9999 0 -29997 58 -9999 10057 -9893 -9999 -9999 0 -29997

Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 3.33.44.23.74.43.74.53.84.23.83.23.4 3.8 45.6


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Jul Nov Spring Winter 1.3in
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 4.4 3.7 0.6 12.3 4.5 3.7 0.8 12.1 4.2 3.2 1.0 11.2 3.4 3.3 0.2 10.1


Sunlight / Day length
+

Max day length Min day length Sunlight/Day length
Jan -9999 min
-167 h 21 min
597 min
9 h 57 min
597,843
620 min
10 h 20 min
(31.1.)
620,820
580 min
9 h 40 min
(1.1.)
580,860
-1674.4 %
-9999,10596
Feb -9999 min
-167 h 21 min
652 min
10 h 52 min
652,788
683 min
11 h 23 min
(29.2.)
683,757
622 min
10 h 22 min
(1.2.)
622,818
-1533.9 %
-9999,10651
Mar -9999 min
-167 h 21 min
721 min
12 h 1 min
721,719
757 min
12 h 37 min
(31.3.)
757,683
686 min
11 h 26 min
(1.3.)
686,754
-1386.7 %
-9999,10720
Apr -9999 min
-167 h 21 min
792 min
13 h 12 min
792,648
823 min
13 h 43 min
(30.4.)
823,617
759 min
12 h 39 min
(1.4.)
759,681
-1262.8 %
-9999,10791
May -9999 min
-167 h 21 min
851 min
14 h 11 min
851,589
872 min
14 h 32 min
(31.5.)
872,568
825 min
13 h 45 min
(1.5.)
825,615
-1175.4 %
-9999,10850
Jun -9999 min
-167 h 21 min
879 min
14 h 39 min
879,561
881 min
14 h 41 min
(19.6.)
881,559
872 min
14 h 32 min
(1.6.)
872,568
-1137.6 %
-9999,10878
Jul -9999 min
-167 h 21 min
862 min
14 h 22 min
862,578
878 min
14 h 38 min
(1.7.)
878,562
841 min
14 h 1 min
(31.7.)
841,599
-1159.8 %
-9999,10861
Aug -9999 min
-167 h 21 min
809 min
13 h 29 min
809,631
839 min
13 h 59 min
(1.8.)
839,601
777 min
12 h 57 min
(31.8.)
777,663
-1236.1 %
-9999,10808
Sep -9999 min
-167 h 21 min
741 min
12 h 21 min
741,699
774 min
12 h 54 min
(1.9.)
774,666
707 min
11 h 47 min
(30.9.)
707,733
-1349.6 %
-9999,10740
Oct -9999 min
-167 h 21 min
670 min
11 h 10 min
670,770
705 min
11 h 45 min
(1.10.)
705,735
637 min
10 h 37 min
(31.10.)
637,803
-1491.5 %
-9999,10669
Nov -9999 min
-167 h 21 min
609 min
10 h 9 min
609,831
635 min
10 h 35 min
(1.11.)
635,805
588 min
9 h 48 min
(30.11.)
588,852
-1641.2 %
-9999,10608
Dec -9999 min
-167 h 21 min
579 min
9 h 39 min
579,861
587 min
9 h 47 min
(1.12.)
587,853
576 min
9 h 36 min
(20.12.)
576,864
-1726.6 %
-9999,10578
Year -10832 min
-181 h 28 min
730 min
12 h 10 min
730,710
881 min
14 h 41 min
(19. 6.)
881,559
576 min
9 h 36 min
(20. 12.)
576,864
-1483.2 %
-10832,11563



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day
(min/day) -9999 -9999 -9999 -1269.2%
-9999,10787
-9999 -9999 -9999 -1176.8%
-9999,10849
-9999 -9999 -9,999 -1484.7%
-9999,10672
-9999 -9999 -9999 -1643.4%
-9999,10607
Day length 872 686 788 881 777 850 774 588 673 683 576 608

Day length
+

Max day length Min day length
Jan 597 min
9 h 57 min
597,843
620 min
10 h 20 min
(Array.1.)
620,820
580 min
9 h 40 min
(1.1.)
580,860
Feb 652 min
10 h 52 min
652,788
683 min
11 h 23 min
(Array.2.)
683,757
622 min
10 h 22 min
(1.2.)
622,818
Mar 721 min
12 h 1 min
721,719
757 min
12 h 37 min
(Array.3.)
757,683
686 min
11 h 26 min
(1.3.)
686,754
Apr 792 min
13 h 12 min
792,648
823 min
13 h 43 min
(Array.4.)
823,617
759 min
12 h 39 min
(1.4.)
759,681
May 851 min
14 h 11 min
851,589
872 min
14 h 32 min
(Array.5.)
872,568
825 min
13 h 45 min
(1.5.)
825,615
Jun 879 min
14 h 39 min
879,561
881 min
14 h 41 min
(Array.6.)
881,559
872 min
14 h 32 min
(1.6.)
872,568
Jul 862 min
14 h 22 min
862,578
878 min
14 h 38 min
(Array.7.)
878,562
841 min
14 h 1 min
(31.7.)
841,599
Aug 809 min
13 h 29 min
809,631
839 min
13 h 59 min
(Array.8.)
839,601
777 min
12 h 57 min
(31.8.)
777,663
Sep 741 min
12 h 21 min
741,699
774 min
12 h 54 min
(Array.9.)
774,666
707 min
11 h 47 min
(30.9.)
707,733
Oct 670 min
11 h 10 min
670,770
705 min
11 h 45 min
(Array.10.)
705,735
637 min
10 h 37 min
(31.10.)
637,803
Nov 609 min
10 h 9 min
609,831
635 min
10 h 35 min
(Array.11.)
635,805
588 min
9 h 48 min
(30.11.)
588,852
Dec 579 min
9 h 39 min
579,861
587 min
9 h 47 min
(Array.12.)
587,853
576 min
9 h 36 min
(20.12.)
576,864
Year 730 min
12 h 10 min
730,710
881 min
14 h 41 min
(20. 6.)
881,559
576 min
9 h 36 min
(21. 12.)
576,864



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Max Min Average Max Min Average Max Min Average
Day length 872 686 788 881 777 850 774 588 673 683 576 608

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