Monica, IL Weather Forecast
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Monica Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
| Mostly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny | Showers | Showers | Showers | Chance of Showers | Chance of Showers | Partly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Hi: 71°FHi: 22°C Lo: 65°FLo: 18°C | Hi: 71°FHi: 22°C Lo: 65°FLo: 18°C | Hi: 71°FHi: 22°C | Lo: 60°FLo: 16°C | Hi: 69°FHi: 21°C | Hi: 70°FHi: 21°C Lo: 55°FLo: 13°C |
| POP: 60% | POP: 60% | POP: 70% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 752 PM CDT Sat Sep 26 2026 

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Issued: 820 PM CDT Sat Sep 26 2026
Key Messages
- Expect mostly dry conditions and seasonable temperatures through Tuesday afternoon, though a few light showers are possible over west central IL into this evening.
- Heavy rainfall and localized flooding become the primary concern Wednesday through Friday as repeated rounds of rain move across central Illinois.
- NBM has a 30 to 50% chance of rainfall exceeding 2 inches from overnight Tue night through Friday night over central and southeast IL.
Discussion
... Issued at 200 PM CDT Sat Sep ...
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