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City of Lawrenceville, ILLawrenceville, IL Weather Forecast
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Lawrenceville Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT |
 |  |  |  | |  | | |  | | | |
| Partly Cloudy | Partly Sunny | Chance of T-Storm | Showers | Clearing | Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Clear | Clear | Mostly Clear |
| Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C Lo: 41°FLo: 5°C | Hi: 70°FHi: 21°C Lo: 41°FLo: 5°C | Lo: 45°FLo: 7°C |
| POP: 80% | POP: 90% |
POP = Probability of Precipitation.
Weather Outlook Updated: 637 PM CDT Wed Sep 30 2026 
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Issued: 613 PM CDT Wed Sep 30 2026
Key Messages
- Widespread heavy precipitation is expected late Thursday morning through Friday. Narrow bands of rain could produce localized totals exceeding 2 inches.
- Drier, fall-like weather begins Friday night and continues through early next week.
Discussion
... Issued at 111 PM CDT Wed Sep 30 2026
18Z surface analysis shows high pressure centered over the east coast of the US with low pressure over the Oklahoma panhandle. A ribbon of both Pacific and Gulf moisture extends north from the low into ...