Mueller, IL Weather Forecast
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Mueller Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Sunny | Chance of Showers | Chance of Showers |
| Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C |
| POP: 20% | POP: 70% | POP: 70% | POP: 50% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 438 PM CDT Sat Sep 19 2026 

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Instant definitions for any meteorological term.
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Issued: 619 PM CDT Sat Sep 19 2026
Key Messages
- A cold front will slowly drift southward through the region, bringing widespread showers and thunderstorms late Sunday into Monday.
- The pattern shift will result in cooler, more seasonable temperatures through next week.
Aviation
/00Z TAFS THROUGH 06Z MONDAY/... Issued at 604 PM CDT Sat Sep 19 2026
The chances for showers will begin to increase with this set of TAFS including at UIN late tonight into Sunday with a chance (30-40%) between 11-15Z increasing to 40-60% though 18Z. There is ...
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