Irene, IL Weather Forecast
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Irene Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
| Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Sunny | Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Clear | Mostly Sunny |
| Lo: 65°FLo: 18°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C |
| POP: 100% | POP: 100% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 705 PM CDT Wed Sep 30 2026 

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Issued: 632 PM CDT Wed Sep 30 2026
Key Messages
- Periods of rain, heavy at times, are expected through early Friday morning.
- A large footprint of 1" to 3" rainfall amounts across the region may lead to significant rises on area rivers and streams.
- The potential exists for localized corridors of rainfall amounts in excess of 3" Thursday afternoon and evening.
- Dry and seasonably cool conditions will arrive this weekend and continue into early next week.
Discussion
... Issued at 306 PM CDT Wed Sep 30 2026
Several small-scale mid-level im...
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