County Forecast for Watseka , IL
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210300-
Iroquois-
Including the cities of Watseka and Gilman
705 AM CDT Thu Aug 20 2026

Today   Partly cloudy in the morning, then becoming mostly sunny. Patchy fog early in the morning. Highs in the upper 70s. Northeast winds around 5 mph.
Tonight   Clear in the evening, then becoming partly cloudy. Lows in the upper 50s. Northeast winds around 5 mph in the evening, becoming light and variable.
Friday   Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms late. Highs around 80. Southwest winds around 5 mph. Chance of precipitation 30 percent.
Friday night   Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 60s. Southwest winds around 5 mph. Chance of precipitation 50 percent.
Saturday   Mostly sunny in the morning, then becoming partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Northwest winds 5 to 10 mph. Chance of precipitation 20 percent.
Saturday night   Mostly clear. Lows in the upper 50s.
Sunday   Mostly sunny. Highs in the mid 70s.
Sunday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.
Monday   Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 70s.
Monday night   Partly cloudy. Lows in the upper 50s.
Tuesday   Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 70s.
Tuesday night   Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s.
Wednesday   Partly cloudy. Highs in the lower 80s.
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Bryce Anderson – DTN Meteorologist
Storms Continue in Tennessee Valley, New System for Northern Corn Belt Thursday

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Posted at 5:41AM Thu Aug 20, 2026 CDT
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