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City of Winchester, ILWinchester, IL 7-Day Weather Forecast
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Winchester Weather Forecast
Winchester, IL Weather Forecast Date: 742 PM CDT Fri Sep 18 2026
Weather forecast for Winchester, IL
Tonight Lo: 71°F Lo: 22°C |
Tonight... Partly cloudy. Lows in the lower 70s. Southeast winds around 5 mph. |
Sat Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Saturday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 90s. Southwest winds 5 to 10 mph. |
Sun Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Sunday... Showers likely. A chance of thunderstorms in the afternoon. Highs in the mid 80s. Northwest winds 5 to 10 mph. Chance of rain 70%. |
| Mon Hi: 71°FHi: 22°C Lo: 51°F Lo: 11°C |
Monday... A chance of thunderstorms. Showers likely, mainly in the morning. Cooler with highs in the lower 70s. Chance of rain 70%. |
| Tue Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Tuesday... Mostly cloudy. Highs in the upper 60s. Lows in the lower 50s. |
Wed Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Wednesday... Partly cloudy. Highs in the lower 70s. Lows in the mid 50s. |
| Thu Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Thursday... Partly cloudy. Highs in the lower 70s. Lows in the mid 50s. |
| Fri Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Friday... Partly cloudy. Highs in the lower 70s. Lows in the mid 50s. |
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