Wilmington, DE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wilmington, a city in New Castle County, Delaware.
Today
86°F
Mostly Sunny
Mostly sunny, with a high near 86. Northeast wind around 5 mph.
7-day forecast for Wilmington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny | 5 mph NE | 0% |
| Tonight | 69°F | Mostly Cloudy | 0 to 5 mph SE | 11% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 81% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 54% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 20% |
| Thursday Night | 74°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 25% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 34% |
| Friday Night | 73°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 44% |
| Saturday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 36% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 36% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 17% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 17% |
| Monday | 91°F | Sunny | 0 to 5 mph W | 11% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 5 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov) for Wilmington (39.736, -75.532). Updated through the day.
Growing snapshot for Wilmington
Last spring frost
Apr 7
First fall frost
Nov 4
Growing season
209 days
Hardiness zone
7b
More local growing data for Wilmington: nearby ZIP 19801 weather · frost dates · planting calendar · Delaware frost dates
Nearby towns & communities
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Ardentown
Bear
Bellefonte
Brookside
Claymont
Delaware City
Edgemoor
Elsmere
Glasgow
Greenville
Hockessin
Middletown
New Castle
Newark
Newport
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Odessa
Pike Creek
Pike Creek Valley
Port Penn
St. Georges
Townsend
Wilmington Manor
Climate data from the nearest NOAA station, Wilmington Porter Rsch, De (3.5 mi from Wilmington). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.