Winchester, IL Weather & Growing Conditions
Today
95°F
Mostly Cloudy
Mostly cloudy, with a high near 95. Southwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Mostly Cloudy | 8 mph SW | 4% |
| Tonight | 70°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SSW | 26% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 1 to 8 mph NNW | 48% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 71% |
| Monday | 71°F | Showers And Thunderstorms Likely | 8 to 12 mph NE | 71% |
| Monday Night | 55°F | Chance Rain Showers | 8 to 12 mph NE | 26% |
| Tuesday | 67°F | Chance Rain Showers then Partly Sunny | 12 mph NNE | 26% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 9 mph NNE | 5% |
| Wednesday | 71°F | Mostly Sunny | 8 mph NNE | 0% |
| Wednesday Night | 52°F | Partly Cloudy | 2 to 7 mph NNE | 0% |
| Thursday | 73°F | Mostly Sunny | 2 to 6 mph NNE | 2% |
| Thursday Night | 55°F | Partly Cloudy | 5 mph NE | 4% |
| Friday | 75°F | Mostly Sunny | 2 to 6 mph NE | 6% |
| Friday Night | 55°F | Partly Cloudy | 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winchester, IL
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
6a
Explore more for Winchester, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Winchester, Il (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.