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Denison, IL 7-Day Weather Forecast
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Denison Weather Forecast
Denison, IL Weather Forecast Date: 437 AM CDT Wed Sep 09 2026
Weather forecast for Denison, IL
Today Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Today... Mostly sunny. A chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. Southwest winds 10 to 15 mph. Chance of rain 40%. |
| Thu Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Thursday... A chance of thunderstorms. Showers. Not as warm. Humid with highs in the lower 80s. Northwest winds 5 to 10 mph. Chance of rain 90%. |
Fri Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Friday... Mostly sunny. Highs in the mid 80s. East winds around 5 mph. |
Sat Hi: 91°FHi: 33°C Lo: 69°F Lo: 21°C |
Saturday... Mostly sunny. A chance of showers in the afternoon. Highs in the lower 90s. Chance of rain 30%. |
Sun Hi: 91°FHi: 33°C Lo: 70°F Lo: 21°C |
Sunday... Partly cloudy. Lows in the upper 60s. Highs in the lower 90s. |
| Mon Hi: 95°FHi: 35°C Lo: 70°F Lo: 21°C |
Monday... Mostly clear. Lows around 70. Highs in the mid 90s. |
| Mon Hi: 95°FHi: 35°C Lo: 70°F Lo: 21°C |
Monday... Mostly clear. Lows around 70. Highs in the mid 90s. |
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