Wilmington, DE Weather
Wilmington hourly forecast: next 24 hours
Today's high of 82°F (28°C) is right in line with the typical August high of 84°F (29°C).
Current conditions in detail
Wilmington weather tomorrow (Thursday, August 27)
Tomorrow in Wilmington looks light rain shower, with a high of 86° and an overnight low of 70°. There is a 84% chance of rain - plan accordingly. Winds top out near 15 mph, and the UV index reaches 7 (high).
Wilmington 14-day forecast
About the weather in Wilmington
Wilmington runs one of the wider annual swings in our dataset: 24°C separates the average July from the average January. Afternoons reach 86°F (30°C) at the peak of summer and 42°F (5°C) at the depth of winter, with 131 days of measurable precipitation through the year.
Wilmington weather: quick facts
- Hottest month: July - highs near 86°F (30°C)
- Coldest month: January - highs near 42°F (5°C)
- Decade extremes (2015-2024): 98°F (36°C) high · -1°F (-18°C) low
- Wettest month: August (14 rainy days) · Sunniest: July (11.7 h sun/day)
- Climate type: humid subtropical
- Annual swing: 24°C between the average warmest and coolest month · day to night: 9°C
- Snow: about 8 days a year
- Months averaging 30°C or hotter: 1
- Average humidity: 69%
Temperatures through the year
January sits at the other end of the year: 42°F (5°C) by day, 28°F (-2°C) at night. July is the warm end of the year, averaging 86°F (30°C) by day and 70°F (21°C) overnight. Sunshine averages 8.6 hours a day over the year, peaking in July at 11.7 hours.
Rain, sun and snow
Between the average July and the average January lie 24°C, a wider spread than roughly 79% of the cities we track. Precipitation concentrates in August - 5.5 inches (140 mm) on 14 days - and thins out by November. Snow falls on roughly 8 days a year, mostly December through March. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 98°F (36°C) and the lowest daily minimum -1°F (-18°C).
Season by season
Spring (March through May)
Through spring, Wilmington is crisp but comfortable: 63°F (17°C) by day, 45°F (7°C) after dark, and rain falls on around 33 of the 90 days.
Summer (June through August)
Through summer, Wilmington runs hot: 84°F (29°C) by day, 67°F (20°C) after dark, and rain falls on around 41 of the 90 days. Daylight is generous - around 11.2 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
Fall (September through November)
Fall in Wilmington is 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 runs cold, with daytime highs averaging 45°F (7°C) and nights around 30°F (-1°C); rain falls on around 30 of the 90 days, plus about 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% |