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Harrison School Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | VETERANS DAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | | | | | |  |  |  |  | |
| Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Chance of Rain | Chance of Rain | Mostly Cloudy | Mostly Cloudy | Mostly Sunny |
| Hi: 51°FHi: 11°C | Lo: 31°FLo: -1°C | Hi: 60°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C | Hi: 65°FHi: 18°C Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C Lo: 40°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 51°FHi: 11°C Lo: 31°FLo: -1°C | Hi: 51°FHi: 11°C Lo: 31°FLo: -1°C | Hi: 49°FHi: 9°C |
| POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1227 PM CST Sat Nov 07 2026 
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Issued: 500 PM CST Sat Nov 7 2026
Key Messages
- Precipitation chances have increased modestly for Wednesday, though the chances of greater than a quarter-inch of total rainfall are still limited (20-30%).
- After a stretch of high temperatures largely in the 60s from Sunday through Wednesday, another notable cool-down is anticipated later next week. There is a 50-80% chance of high temperatures below 50 degrees on Friday.
Discussion
... Issued at 146 PM CST Sat Nov 7 2026
Light winds are in place across central and southeast Illinois t...