Windsor, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Windsor, a city in Shelby County, Illinois.
Overnight
70°F
Mostly Clear
Mostly clear, with a low around 70. South southeast wind around 7 mph.
7-day forecast for Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Mostly Clear | 7 mph SSE | 4% |
| Saturday | 91°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph SSW | 17% |
| Saturday Night | 70°F | Partly Cloudy | 6 mph S | 9% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 3 to 9 mph NNW | 33% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 62% |
| Monday | 72°F | Showers And Thunderstorms Likely | 13 mph NE | 66% |
| Monday Night | 54°F | Chance Showers And Thunderstorms | 9 to 14 mph NE | 51% |
| Tuesday | 68°F | Chance Showers And Thunderstorms | 13 mph NNE | 30% |
| Tuesday Night | 52°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 to 10 mph NNE | 30% |
| Wednesday | 70°F | Mostly Sunny | 9 mph NNE | 5% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 8 mph N | 3% |
| Thursday | 72°F | Mostly Sunny | 8 mph N | 2% |
| Thursday Night | 54°F | Partly Cloudy | 3 to 7 mph NNE | 3% |
| Friday | 74°F | Mostly Sunny | 8 mph NE | 2% |
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 Sep 19, 2026.