Washington National Airport
The tables below display average monthly climate and weather indicators in Washington National Airport District of Columbia.
Temperature by: Fahrenheit / Centigrade
Washington National Airport Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Avg. Temperature | 1.4 | 3.1 | 8.4 | 13.6 | 19.1 | 24.2 | 26.7 | 25.8 | 21.8 | 15.4 | 9.9 | 4.1 | 14.4 |
Avg. Max Temperature | 5.7 | 7.7 | 13.6 | 19.3 | 24.6 | 29.3 | 31.4 | 30.5 | 26.7 | 20.6 | 14.6 | 8.3 | 19.4 |
Avg. Min Temperature | -2.9 | -1.6 | 3.2 | 8.0 | 13.7 | 19.2 | 21.9 | 21.1 | 16.9 | 10.2 | 5.1 | -0.2 | 9.6 |
Days with Max Temp of 32 C or Higher | 0.0 | 0.0 | 0.0 | < 0.5 | 2.0 | 8.0 | 14.0 | 10.0 | 4.0 | < 0.5 | 0.0 | 0.0 | 37.0 |
Days with Min Temp Below Freezing | 22.0 | 18.0 | 8.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | < 0.5 | 5.0 | 15.0 | 69.0 |
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Washington National Airport Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Heating Degree Days | 942 | 770 | 552 | 264 | 60.0 | 0.0 | 0.0 | 0.0 | 14.0 | 195 | 456 | 794 | 4047 |
Cooling Degree Days | 0.0 | 0.0 | 0.0 | 9.0 | 104 | 318 | 465 | 419 | 203 | 31.0 | 0.0 | 0.0 | 1549 |
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Washington National Airport Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Precipitation (inches) | 2.7 | 2.7 | 3.2 | 2.7 | 3.7 | 3.4 | 3.8 | 3.9 | 3.3 | 3.0 | 3.1 | 3.1 | 38.6 |
Days with Precipitation 0.01 inch or More | 10.0 | 9.0 | 11.0 | 10.0 | 11.0 | 10.0 | 10.0 | 9.0 | 8.0 | 7.0 | 9.0 | 9.0 | 113 |
Monthly Snowfall (inches) | 5.5 | 5.4 | 2.2 | < 0.05 | < 0.05 | < 0.05 | < 0.05 | < 0.05 | 0.0 | 0.0 | 0.8 | 2.8 | 16.7 |
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Other Washington National Airport Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Average Wind Speed | 10.0 | 10.3 | 10.9 | 10.5 | 9.3 | 8.9 | 8.3 | 8.1 | 8.3 | 8.7 | 9.4 | 9.6 | 9.4 |
Clear Days | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 9.0 | 10.0 | 11.0 | 8.0 | 8.0 | 96.0 |
Partly Cloudy Days | 7.0 | 7.0 | 8.0 | 9.0 | 10.0 | 11.0 | 12.0 | 10.0 | 8.0 | 8.0 | 8.0 | 7.0 | 106 |
Cloudy Days | 16.0 | 15.0 | 15.0 | 14.0 | 14.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 14.0 | 16.0 | 164 |
Percent of Possible Sunshine | 46.0 | 50.0 | 55.0 | 57.0 | 58.0 | 64.0 | 62.0 | 62.0 | 61.0 | 59.0 | 51.0 | 46.0 | 56.0 |
Avg. Relative Humidity | 54.0 | 63.0 | 62.0 | 60.0 | 61.5 | 64.5 | 64.5 | 66.5 | 68.0 | 67.5 | 64.0 | 63.0 | 66.0 |
Weather information for other cities in District of Columbia