Windsor, IL Weather & Growing Conditions
Tonight
68°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2am. Mostly cloudy. Low around 68, with temperatures rising to around 70 overnight. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph SE | 45% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 10 mph S | 54% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph N | 78% |
| Sunday | 73°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 78% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 15 mph NE | 66% |
| Monday | 64°F | Rain Showers Likely | 15 to 20 mph NE | 62% |
| Monday Night | 53°F | Chance Rain Showers | 15 mph NE | 51% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 39% |
| Tuesday Night | 50°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 67°F | Mostly Sunny | 10 mph NE | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 5 mph NE | 2% |
| Thursday | 68°F | Mostly Sunny | 5 mph NE | 4% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Friday | 71°F | Mostly Sunny | 5 mph NE | 6% |
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 Sep 19, 2026.