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| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  | | |  | |  |  | | | | |
| Mostly Clear | Sunny | Clear | Sunny | Partly Cloudy | Mostly Sunny | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Sunny |
| 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: 75°FHi: 24°C | Hi: 75°FHi: 24°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: 69°FHi: 21°C Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 942 PM CDT Wed Oct 21 2026 
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Issued: 1221 AM CDT Thu Oct 22 2026
Key Messages
- Sunny mild days and cool nights persist across central and southeast Illinois through Sunday, with highs in the mid- upper 70s and lows in the 40s.
- A cold front moves across the region early next week, bringing prospects for light rain, followed by cooler temperatures.
Discussion
... Issued at 1211 PM CDT Wed Oct 21 2026
Surface ridge axis centered across the area provides quiet, clear conditions across central and southeast Illinois. Dry air and subsidence will continue to produce main...