Wilmington
The tables below display average monthly climate and weather indicators in Wilmington Delaware.
Temperature by: Fahrenheit / Centigrade
| Wilmington Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Avg. Temperature | 7.2 | 8.5 | 12.4 | 16.8 | 21.2 | 24.7 | 26.7 | 26.3 | 24.1 | 18.5 | 13.9 | 9.2 | 17.4 |
| Avg. Max Temperature | 12.9 | 14.5 | 18.7 | 23.3 | 27.1 | 29.7 | 31.4 | 30.9 | 29.6 | 24.9 | 20.6 | 15.2 | 23.2 |
| Avg. Min Temperature | 1.3 | 2.4 | 6.2 | 10.3 | 15.2 | 19.7 | 22.1 | 21.7 | 18.5 | 12.1 | 7.1 | 3.1 | 11.6 |
| Days with Max Temp of 32 C or Higher | 0.0 | 0.0 | 0.0 | 1.0 | 2.0 | 8.0 | 16.0 | 12.0 | 5.0 | < 0.5 | 0.0 | 0.0 | 45.0 |
| Days with Min Temp Below Freezing | 13.0 | 10.0 | 4.0 | 3.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 3.0 | 10.0 | 41.0 |
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| Wilmington Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Heating Degree Days | 631 | 496 | 338 | 115 | 10.0 | 0.0 | 0.0 | 0.0 | 0.0 | 102 | 259 | 519 | 2470 |
| Cooling Degree Days | 8.0 | 0.0 | 10.0 | 34.0 | 168 | 345 | 468 | 446 | 309 | 111 | 19.0 | 8.0 | 1926 |
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| Wilmington Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Precipitation (inches) | 3.9 | 3.7 | 3.9 | 2.9 | 4.4 | 6.0 | 8.1 | 6.9 | 5.0 | 2.7 | 3.1 | 3.6 | 54.3 |
| Days with Precipitation 0.01 inch or More | 11.0 | 10.0 | 10.0 | 8.0 | 9.0 | 10.0 | 13.0 | 12.0 | 10.0 | 7.0 | 8.0 | 9.0 | 117 |
| Monthly Snowfall (inches) | 0.4 | 0.5 | 0.4 | 0.2 | < 0.05 | < 0.05 | < 0.05 | 0.0 | 0.0 | 0.0 | 0.9 | 0.6 | 1.9 |
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| Other Wilmington Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Average Wind Speed | 9.0 | 9.6 | 10.0 | 10.1 | 9.1 | 8.4 | 7.9 | 7.3 | 7.8 | 7.9 | 8.1 | 8.4 | 8.6 |
| Clear Days | 10.0 | 9.0 | 10.0 | 11.0 | 8.0 | 7.0 | 6.0 | 7.0 | 8.0 | 12.0 | 12.0 | 10.0 | 111 |
| Partly Cloudy Days | 6.0 | 6.0 | 8.0 | 8.0 | 11.0 | 11.0 | 12.0 | 12.0 | 10.0 | 7.0 | 7.0 | 7.0 | 104 |
| Cloudy Days | 15.0 | 13.0 | 14.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 14.0 | 150 |
| Percent of Possible Sunshine | 56.0 | 59.0 | 64.0 | 71.0 | 67.0 | 66.0 | 64.0 | 62.0 | 61.0 | 64.0 | 63.0 | 59.0 | 63.0 |
| Avg. Relative Humidity | 58.0 | 67.5 | 67.5 | 66.5 | 66.0 | 70.0 | 73.0 | 76.5 | 77.0 | 75.0 | 70.5 | 67.5 | 70.5 |