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| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Thunderstorms | Chance of T-Storm | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Clearing | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Lo: 69°FLo: 21°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C |
| POP: 100% | POP: 100% | POP: 20% | POP: 30% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 120 AM CDT Sun Sep 20 2026 
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Issued: 224 AM CDT Sun Sep 20 2026
Key Messages
- A Flood Watch for flash flooding has been extended through early this afternoon for areas roughly along and north of the Illinois and Kankakee rivers.
- Periods of showers and thunderstorms with torrential rain and localized flash flooding are expected through midday today.
- Below normal temps through the end of the week.
Discussion
... Issued at 224 AM CDT Sun Sep 20 2026
The flood watch has been extended until 18z today. Periods of showers and thunderstorms are expected to continue throu...