Windsor, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Windsor, a city in Shelby County, Illinois.
Overnight
61°F
Patchy Fog
Patchy fog. Clear, with a low around 61. Southeast wind around 3 mph.
7-day forecast for Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Patchy Fog | 3 mph SE | 0% |
| Tuesday | 85°F | Patchy Fog then Sunny | 1 to 5 mph SSE | 0% |
| Tuesday Night | 65°F | Mostly Clear | 5 mph SSE | 0% |
| Wednesday | 86°F | Sunny | 6 mph S | 1% |
| Wednesday Night | 67°F | Partly Cloudy then Chance Showers And Thunderstorms | 6 mph S | 42% |
| Thursday | 82°F | Showers And Thunderstorms Likely | 6 mph SSW | 73% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms | 5 mph S | 32% |
| Friday | 83°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 3 mph SSW | 19% |
| Saturday | 85°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SSW | 19% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 mph S | 15% |
| Sunday | 87°F | Sunny | 7 to 10 mph SSW | 7% |
| Sunday Night | 70°F | Mostly Clear | 9 mph SSW | 8% |
| Monday | 88°F | Mostly Sunny | 10 mph SSW | 10% |
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 Aug 4, 2026.