Weather WorldAllison, IL 7-Day Weather Forecast
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Allison Weather Forecast
Allison, IL Weather Forecast Date: 207 AM CDT Tue Sep 08 2026
Weather forecast for Allison, IL
Tonight Lo: 60°F Lo: 16°C |
Tonight... Mostly clear. Near steady temperature in the lower 60s. Northeast winds around 5 mph. |
Tue Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Tuesday... Mostly sunny. Highs in the mid 90s. South winds 5 to 10 mph. |
Wed Hi: 99°FHi: 37°C Lo: 70°F Lo: 21°C |
Wednesday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. Southwest winds 10 to 15 mph. Chance of rain 40%. Heat index values up to 102. |
Thu Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Thursday... Showers, mainly in the morning. Not as warm with highs in the lower 80s. Chance of rain 90%. |
Fri Hi: 89°FHi: 32°C Lo: 65°F Lo: 18°C |
Friday... Partly cloudy. Highs in the upper 80s. Lows in the mid 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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