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City of Decatur, Illinois
Decatur, IL 7-Day Weather Forecast
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Decatur Weather Forecast
Decatur, IL Weather Forecast Date: 837 PM CDT Tue Apr 29 2025
Weather forecast for Decatur, IL
Tonight Lo: 50°F Lo: 10°C |
Tonight... Partly cloudy. Much cooler with lows around 50. North winds 5 to 10 mph, becoming northeast. |
Wed Hi: 65°FHi: 18°C Lo: 61°F Lo: 16°C |
Wednesday... Showers likely in the morning, then showers with a chance of thunderstorms in the afternoon. Cooler with highs in the mid 60s. East winds around 10 mph with gusts up to 20 mph. Chance of rain 80%. |
| Thu Hi: 71°FHi: 22°C Lo: 51°F Lo: 11°C |
Thursday... Showers with a chance of thunderstorms. Highs in the lower 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100%. |
Fri Hi: 69°FHi: 21°C Lo: 45°F Lo: 7°C |
Friday... Mostly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 40%. |
Sat Hi: 65°FHi: 18°C Lo: 49°F Lo: 9°C |
Saturday... Mostly clear. Highs in the mid 60s. Lows in the mid 40s. |
| Sun Hi: 70°FHi: 21°C Lo: 51°F Lo: 11°C |
Sunday... Mostly clear. Highs around 70. Lows in the upper 40s. |
| Mon Hi: 75°FHi: 24°C Lo: 51°F Lo: 11°C |
Monday... Mostly clear. Highs in the mid 70s. Lows in the lower 50s. |
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