Windsor, IL Weather & Growing Conditions
Overnight
68°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3am and 4am, then patchy fog and a slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Southeast wind around 10 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Slight Chance Showers And Thunderstorms | 10 mph SE | 24% |
| Saturday | 83°F | Patchy Fog | 5 to 10 mph SE | 57% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 84% |
| Sunday | 72°F | Showers And Thunderstorms | 10 to 15 mph NE | 78% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 15 mph NE | 53% |
| Monday | 64°F | Showers And Thunderstorms Likely | 15 to 20 mph NE | 65% |
| Monday Night | 53°F | Chance Rain Showers | 15 mph NE | 54% |
| Tuesday | 62°F | Chance Rain Showers | 15 mph NE | 33% |
| Tuesday Night | 49°F | Mostly Clear | 5 to 15 mph NE | 7% |
| Wednesday | 66°F | Mostly Sunny | 10 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Thursday | 68°F | Mostly Sunny | 5 mph NE | 5% |
| Thursday Night | 55°F | Partly Cloudy | 5 mph NE | 3% |
| Friday | 72°F | Mostly Sunny | 5 to 10 mph NE | 3% |
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.