Wilmington, DE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wilmington, a city in New Castle County, Delaware.
Overnight
62°F
Partly Cloudy
Partly cloudy, with a low around 62. Northeast wind 5 to 10 mph.
7-day forecast for Wilmington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Partly Cloudy | 5 to 10 mph NE | 2% |
| Saturday | 76°F | Partly Sunny | 5 to 10 mph NE | 2% |
| Saturday Night | 64°F | Mostly Cloudy then Patchy Fog | 5 to 10 mph E | 12% |
| Sunday | 78°F | Rain Showers Likely | 5 to 10 mph SE | 68% |
| Sunday Night | 64°F | Showers And Thunderstorms | 5 to 10 mph W | 82% |
| Monday | 72°F | Chance Rain Showers | 10 mph NE | 44% |
| Monday Night | 60°F | Chance Rain Showers | 5 to 10 mph NE | 33% |
| Tuesday | 66°F | Chance Rain Showers | 10 mph NE | 36% |
| Tuesday Night | 56°F | Chance Rain Showers | 10 mph NE | 36% |
| Wednesday | 64°F | Chance Rain Showers | 10 mph NE | 38% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 10 mph NE | 36% |
| Thursday | 65°F | Chance Showers And Thunderstorms | 10 mph NE | 34% |
| Thursday Night | 55°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 32% |
| Friday | 69°F | Chance Rain Showers | 5 to 10 mph N | 25% |
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
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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 Sep 19, 2026.