Weather WorldKaskaskia River Navigation Pool, IL Weather Forecast
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Kaskaskia River Navigation Pool Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  | | |  |  | | | |  |  |
| Partly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C |
| POP: 50% | POP: 40% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 128 PM CDT Sun Sep 20 2026 
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Issued: 219 PM CDT Sun Sep 20 2026
Key Messages
- A cold front will move through the region tonight bringing showers and thunderstorms to the area.
- Starting Tuesday, seasonably cool temperatures and dry conditions are forecast for the remainder of the work week.
Aviation
/18Z TAFS THROUGH 00Z TUESDAY/... Issued at 1212 PM CDT Sun Sep 20 2026
This afternoon: A stationary boundary was analyzed northwest of all of the terminals this morning, but is slowly moving south again this afternoon. There is a weak mid-level wave that moved across ...