Keyesport, IL Weather Forecast
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Keyesport Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Clearing | Mostly Clear | Mostly Sunny | Clearing | Sunny | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Hi: 89°FHi: 32°C Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C Lo: 61°FLo: 16°C | Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C |
| POP: 90% | POP: 70% | POP: 30% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 543 AM CDT Mon Sep 07 2026 

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Issued: 622 AM CDT Mon Sep 7 2026
Key Messages
- After cooler and less humid conditions today, heat will briefly return Tuesday into Wednesday, but heat index are expected to be overall lower than with the previous heatwave.
- The next opportunity for showers and thunderstorms will come with a cold front Wednesday into early Thursday.
Aviation
/12Z TAFS THROUGH 18Z TUESDAY/... Issued at 622 AM CDT Mon Sep 7 2026
Dry and VFR flight conditions will continue through the TAF period along with light easterly winds becoming more southeasterly...
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