Wilmington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wilmington, a village in Greene County, Illinois.
Today
87°F
Sunny
Sunny, with a high near 87. South wind 2 to 6 mph.
7-day forecast for Wilmington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 2 to 6 mph S | 0% |
| Tonight | 67°F | Mostly Clear | 5 mph SE | 4% |
| Wednesday | 88°F | Mostly Sunny then Scattered Showers And Thunderstorms | 6 mph S | 25% |
| Wednesday Night | 68°F | Showers And Thunderstorms Likely | 6 mph SE | 87% |
| Thursday | 84°F | Showers And Thunderstorms | 5 mph S | 87% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 mph SE | 15% |
| Friday | 86°F | Partly Sunny | 3 mph S | 8% |
| Friday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 2 mph S | 24% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 mph S | 24% |
| Saturday Night | 71°F | Mostly Clear | 3 to 7 mph S | 6% |
| Sunday | 91°F | Sunny | 7 to 10 mph S | 3% |
| Sunday Night | 72°F | Mostly Clear | 8 mph S | 5% |
| Monday | 91°F | Mostly Sunny | 9 mph S | 7% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 23% |
Forecast source: National Weather Service (api.weather.gov) for Wilmington (39.481, -90.487). Updated through the day.
Growing snapshot for Wilmington
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6a
More local growing data for Wilmington: nearby ZIP 62078 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, White Hall 1 E, Il (6.4 mi from Wilmington). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.