Wilmington, DE Weather
Wilmington hourly forecast: next 24 hours
Today's high of 73°F (23°C) is about 11°F (6°C) below the typical August high of 84°F (29°C).
Current conditions in detail
Wilmington weather tomorrow (Tuesday, August 18)
Tomorrow in Wilmington looks overcast, with a high of 50° and an overnight low of 48°. Precipitation chance is modest at 16%. Winds top out near 19 mph, and the UV index reaches 8 (very high).
Wilmington 14-day forecast
About the weather in Wilmington
Weather in Wilmington is shaped by its humid subtropical climate - expect hot, humid summers and generally mild winters. July afternoons typically reach 86°F (30°C), while January highs hover near 42°F (5°C). Annual precipitation averages 52.1 inches (1324 mm) over about 131 rainy days.
Wilmington weather: quick facts
- Hottest month: July - highs near 86°F (30°C)
- Coldest month: January - highs near 42°F (5°C)
- Record high: 98°F (36°C) · Record low: -1°F (-18°C) (2015–2024)
- Wettest month: August (14 rainy days) · Sunniest: July (11.7 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
- Snow: about 8 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 86°F (30°C) and overnight lows stay near 70°F (21°C). The coolest month is January, with typical highs of 42°F (5°C) and lows around 28°F (-2°C). Based on 2015–2024 weather data, temperatures have reached as high as 98°F (36°C) and dropped as low as -1°F (-18°C).
Rain, sun and snow
August is usually the wettest month. It brings about 5.5 inches (140 mm) of rain over 14 days, while November is the driest. July brings the most sunshine, averaging 11.7 hours of sun a day. Snow falls on about 8 days in a typical year, mostly from December through March.
Season by season
Spring (March through May)
Spring in Wilmington is mild, with daytime highs averaging 63°F (17°C) and nights around 45°F (7°C); expect showers on roughly 33 days across the season.
Summer (June through August)
Summer in Wilmington brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 67°F (20°C); expect showers on roughly 41 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
Fall (September through November)
Fall in Wilmington stays on the cool side of mild, with daytime highs averaging 67°F (19°C) and nights around 51°F (11°C); expect showers on roughly 27 days across the season.
Winter (December through February)
Winter in Wilmington is brisk and cold, with daytime highs averaging 45°F (7°C) and nights around 30°F (-1°C); expect showers on roughly 30 days across the season, plus around 6 snowy days.
Average temperatures in Wilmington by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 42° | 28° | 10 | 3.8 in | 6.0 h/day | 67% |
| February | 46° | 29° | 10 | 3.5 in | 6.9 h/day | 66% |
| March | 53° | 35° | 11 | 4.3 in | 8.0 h/day | 64% |
| April | 63° | 45° | 11 | 4.3 in | 9.0 h/day | 65% |
| May | 72° | 55° | 12 | 4.6 in | 9.7 h/day | 70% |
| June | 81° | 64° | 13 | 4.9 in | 11.3 h/day | 69% |
| July | 86° | 70° | 14 | 5.1 in | 11.7 h/day | 73% |
| August | 84° | 69° | 14 | 5.5 in | 10.7 h/day | 74% |
| September | 78° | 62° | 10 | 4.5 in | 9.0 h/day | 73% |
| October | 67° | 52° | 8 | 3.9 in | 8.0 h/day | 72% |
| November | 55° | 40° | 8 | 3.1 in | 7.5 h/day | 68% |
| December | 47° | 33° | 10 | 4.5 in | 5.7 h/day | 72% |