Windsor, IL Weather & Growing Conditions
Tonight
55°F
Rain
Rain before 2am, then a chance of rain showers. Mostly cloudy, with a low around 55. South wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain | 13 to 17 mph S | 95% |
| Wednesday | 62°F | Slight Chance Rain Showers then Mostly Cloudy | 9 to 14 mph SW | 18% |
| Wednesday Night | 43°F | Mostly Cloudy | 7 mph SW | 0% |
| Thursday | 63°F | Sunny | 7 to 13 mph WSW | 1% |
| Thursday Night | 43°F | Mostly Cloudy | 5 mph WNW | 6% |
| Friday | 56°F | Partly Sunny | 5 to 9 mph NNW | 12% |
| Friday Night | 37°F | Partly Cloudy | 3 to 7 mph NNW | 5% |
| Saturday | 54°F | Mostly Sunny | 5 mph NW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph W | 2% |
| Sunday | 60°F | Sunny | 2 to 8 mph W | 9% |
| Sunday Night | 34°F | Mostly Clear | 5 mph WNW | 5% |
| Monday | 63°F | Sunny | 3 to 9 mph WSW | 3% |
| Monday Night | 38°F | Mostly Clear | 5 mph SW | 2% |
| Tuesday | 66°F | Sunny | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Windsor, IL
Last spring frost
Apr 16
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a
Explore more for Windsor, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Windsor, Il (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.