Piatt County, IL Weather Forecast

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Piatt County, IL Weather Forecast

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Piatt County IL weather  - Clear - 74°F
Clear
74°F
Updated 11:05 pm
Feels Like 72°F
Humidity 61%
Wind SSW 13 mph
Barometer  29.86 in
Dew Point 60°F
Piatt County IL weather  - Clear - 23°C
Clear
23°C
Updated 11:05 pm
Feels Like 22°C
Humidity 61%
Wind SSW 21 km/h
Barometer  101.1 kPa
Dew Point 16°C

Piatt County Weather Forecast

REST OF TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SUNDAY SUNDAY NIGHT
Piatt County, IL Weather - Rest Of Tonight Mostly Clear Piatt County, IL Weather - Tuesday Sunny Piatt County, IL Weather - Tuesday Night Chance Of T-Storm Piatt County, IL Weather - Wednesday Showers Piatt County, IL Weather - Wednesday Night Chance Of Showers Piatt County, IL Weather - Thursday Chance Of T-Storm Piatt County, IL Weather - Thursday Night Chance Of Showers Piatt County, IL Weather - Friday Windy Piatt County, IL Weather - Friday Night Mostly Clear Piatt County, IL Weather - Saturday Mostly Clear Piatt County, IL Weather - Sunday Sunny Piatt County, IL Weather - Sunday Night Partly Cloudy
Mostly Clear Sunny Chance of T-Storm Showers Chance of Showers Chance of T-Storm Chance of Showers Windy Mostly Clear Mostly Clear Sunny Partly Cloudy
Lo: 70°FLo: 21°C Hi: 91°FHi: 33°C
Lo: 69°FLo: 21°C Hi: 80°FHi: 27°C
Lo: 59°FLo: 15°C Hi: 75°FHi: 24°C
Lo: 50°FLo: 10°C Hi: 61°FHi: 16°C
Hi: 61°FHi: 16°C
Lo: 39°FLo: 4°C
Hi: 61°FHi: 16°C
Lo: 39°FLo: 4°C
Hi: 69°FHi: 21°C
Hi: 75°FHi: 24°C
Lo: 45°FLo: 7°C
POP: 50% POP: 80% POP: 50% POP: 90% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 937 PM CDT Mon Oct 12 2026 Piatt County, IL Weather - WeatherWorld.com

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Issued: 702 PM CDT Mon Oct 12 2026

Key Messages

  • Record-breaking heat continues through Tuesday afternoon, with high temperatures reaching the upper 80s to lower 90s.
  • A Marginal Risk (level 1 of 5) for severe thunderstorms exists Tuesday night. Some storms will be capable of producing localized damaging wind gusts and hail.
  • Unsettled weather Tuesday night through Thursday brings periods of wet weather, with a 60 to 80 percent chance of 1 to 2 inches of event total rainfall.
  • A sharp cold front transitions the region to much cooler c...