County Forecast for Watseka , IL
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201600-
Iroquois-
Including the cities of Watseka and Gilman
841 PM CDT Sun Jul 19 2026

Tonight   Partly cloudy. Smoke. Lows in the lower 60s. Northeast winds around 5 mph in the evening, becoming light and variable.
Monday   Partly cloudy. Smoke in the morning. Highs in the mid 80s. South winds 5 to 10 mph.
Monday night   Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms late in the evening. A chance of showers and thunderstorms after midnight, then showers and thunderstorms likely late. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of precipitation 70 percent.
Tuesday   Partly cloudy in the morning, then clearing. A chance of showers with a slight chance of thunderstorms in the morning. Humid with highs in the mid 80s. West winds 5 to 10 mph, increasing to northwest 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of precipitation 40 percent.
Tuesday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. North winds 5 to 10 mph.
Wednesday   Partly cloudy in the morning, then becoming mostly sunny. Highs in the mid 70s.
Wednesday night   Mostly clear. Lows in the mid 50s.
Thursday   Sunny. Highs in the upper 70s.
Thursday night   Partly cloudy. Lows in the upper 50s.
Friday   Partly cloudy in the morning, then becoming mostly cloudy. Highs in the lower 80s.
Friday night   Partly cloudy in the evening, then clearing. Lows in the lower 60s.
Saturday   Mostly sunny. Highs in the mid 80s.
Saturday night   Mostly clear. Lows in the mid 60s.
Sunday   Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 80s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heat Wave Continues for Western Corn Belt This Weekend, Then Ends
Posted at 12:00PM Fri Jul 17, 2026 CDT
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