Wilmington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wilmington, a village in Greene County, Illinois.
This Afternoon
72°F
Light Rain Likely
Rain likely and a slight chance of thunderstorms. Cloudy. High near 72, with temperatures falling to around 64 in the afternoon. Southeast wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.
7-day forecast for Wilmington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Light Rain Likely | 18 mph SE | 74% |
| Tonight | 52°F | Light Rain | 9 to 16 mph S | 80% |
| Wednesday | 61°F | Chance Rain Showers then Cloudy | 10 to 14 mph SW | 12% |
| Wednesday Night | 42°F | Partly Cloudy | 8 mph SW | 0% |
| Thursday | 63°F | Mostly Sunny | 7 to 12 mph W | 6% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance T-storms | 6 mph NW | 21% |
| Friday | 57°F | Mostly Cloudy | 6 to 9 mph N | 7% |
| Friday Night | 36°F | Mostly Cloudy | 1 to 7 mph N | 1% |
| Saturday | 56°F | Mostly Sunny | 3 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 2 mph W | 2% |
| Sunday | 62°F | Sunny | 2 to 7 mph W | 7% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 4% |
| Monday | 66°F | Sunny | 3 to 8 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 5 mph SW | 1% |
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 Nov 4, 2026.