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Dennison, IL 7-Day Weather Forecast
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Dennison Weather Forecast
Dennison, IL Weather Forecast Date: 1237 PM CDT Tue Sep 08 2026
Weather forecast for Dennison, IL
Today Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
This Afternoon... Mostly sunny. Highs in the lower 90s. South winds around 5 mph. |
Wed Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40%. |
Thu Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Thursday... Showers, mainly in the morning. Not as warm with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 90%. |
| Fri Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Friday... Mostly clear. Highs in the lower 80s. Lows in the lower 60s. |
Sat Hi: 89°FHi: 32°C Lo: 65°F Lo: 18°C |
Saturday... Partly cloudy. Highs in the upper 80s. Lows in the mid 60s. |
| Sun Hi: 89°FHi: 32°C Lo: 65°F Lo: 18°C |
Sunday... Partly cloudy. Highs in the upper 80s. Lows in the mid 60s. |
| Sun Hi: 89°FHi: 32°C Lo: 65°F Lo: 18°C |
Sunday... Partly cloudy. Highs in the upper 80s. Lows in the mid 60s. |
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