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Allison Weather Forecast
| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 70°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C |
| POP: 80% | POP: 90% | POP: 20% | POP: 30% | POP: 30% | POP: 40% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Thu Sep 10 2026 
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Issued: 145 AM CDT Thu Sep 10 2026
Key Messages
- Localized heavy rainfall early this will yield pockets of 1 to 3 inch totals near and south of I-70, leading to potential ponding in low-lying areas.
- The Climate Prediction Center (CPC) 6-10 day outlook indicates a 40-70% probability of above-normal temperatures across central Illinois September 15-19. Normal highs this time of year is in the low 80s and normal lows in the upper 50s.
Discussion
... Issued at 145 AM CDT Thu Sep 10 2026
Showers and thunderstorms are moving through this mo...