Windsor, IL Weather & Growing Conditions
Today
86°F
Mostly Sunny
Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny | 5 to 10 mph SW | 2% |
| Tonight | 68°F | Chance Showers And Thunderstorms | 5 mph E | 46% |
| Wednesday | 80°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph NE | 75% |
| Wednesday Night | 63°F | Showers And Thunderstorms | 5 mph N | 83% |
| Thursday | 80°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph NE | 62% |
| Thursday Night | 62°F | Mostly Clear | 0 to 5 mph E | 12% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 11% |
| Friday Night | 65°F | Mostly Clear | 5 mph S | 11% |
| Saturday | 85°F | Sunny | 5 to 10 mph S | 9% |
| Saturday Night | 71°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 15% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Sunny | 10 to 15 mph SW | 15% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 10 mph S | 31% |
| Monday | 86°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 to 15 mph S | 31% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph S | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Windsor, IL
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
5b
Explore more for Windsor, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Aledo, Il (13.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.