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| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  | | | | |  |  | |  |  | |
| Mostly Cloudy | Mostly Cloudy | Partly Sunny | Mostly Cloudy | Partly Sunny | Mostly Cloudy | Chance of Showers | Chance of Showers | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Lo: 59°FLo: 15°C |
| POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Wed Sep 23 2026 
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Issued: 605 PM CDT Wed Sep 23 2026
Key Messages
- No significant weather is expected across central Illinois over the next week.
Discussion
... Issued at 145 PM CDT Wed Sep 23 2026
Current Conditions and Synoptic Overview: Water vapor and upper air analysis continues to show a rather messy/convoluted pattern with a blocking pattern across the CONUS. An upper level low continues to slowly move east across Indiana. A large ridge across the Central Plains was also slowly moving east. The 12z ILX sounding showed a decent amount of saturati...