Windsor, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Windsor, a city in Shelby County, Illinois.
Tonight
55°F
Rain
Rain and a slight chance of thunderstorms. Mostly cloudy, with a low around 55. South wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain | 13 to 17 mph S | 96% |
| Wednesday | 62°F | Slight Chance Light Rain then Mostly Cloudy | 9 to 14 mph SW | 20% |
| 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 | 0% |
| 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 | 6% |
| Monday | 63°F | Sunny | 3 to 9 mph WSW | 3% |
| Monday Night | 39°F | Mostly Clear | 5 mph SW | 2% |
| Tuesday | 66°F | Sunny | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Windsor (39.439, -88.595). Updated through the day.
Growing snapshot for Windsor
Last spring frost
Apr 16
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a
More local growing data for Windsor: nearby ZIP 61957 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cowden
Findlay
Herrick
Lakewood
Moweaqua
Oconee
Shelbyville
Sigel
Stewardson
Strasburg
Tower Hill
Westervelt
Climate data from the nearest NOAA station, Windsor, Il (0.9 mi from Windsor). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.