Fish Lake, IL Weather Forecast
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Fish Lake Weather Forecast
| REST OF TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
| Mostly Clear | Sunny | Partly Cloudy | Partly Sunny | Mostly Cloudy | Chance of Showers | Chance of T-Storm | Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Hi: 69°FHi: 21°C Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C Lo: 59°FLo: 15°C | Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C |
| POP: 40% | POP: 70% | POP: 80% | POP: 50% | POP: 50% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Tue Sep 29 2026 

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Issued: 314 AM CDT Tue Sep 29 2026
Key Messages
- Temperatures will remain above normal today through Thursday.
- Widespread 1-3 inches of rain is expected as a slow moving cold front drifts through the area Wednesday night through Friday. The higher end of this range of rainfall is expected across northeast Missouri and west central Illinois.
Aviation
/06Z TAFS THROUGH 12Z WEDNESDAY/... Issued at 1100 PM CDT Mon Sep 28 2026
Predominantly dry and VFR flight conditions are expected through the TAF period, except for the potential for patc...
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