County Forecast for Watseka , IL
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151400-
Iroquois-
Including the cities of Watseka and Gilman
105 AM CDT Sat Aug 15 2026

..flood watch in effect until 10 am cdt this morning   
Rest of tonight   A chance of showers and a slight chance of thunderstorms after midnight, then showers and a chance of thunderstorms late. Some thunderstorms may produce heavy rainfall. Near steady temperature in the lower 70s. Southeast winds around 5 mph. Chance of precipitation near 100 percent.
Saturday   Showers with a chance of thunderstorms in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Locally heavy rainfall possible early in the morning. Humid with highs in the lower 80s. South winds 5 to 10 mph. Chance of precipitation near 100 percent.
Saturday night   Mostly cloudy. A slight chance of showers until early morning. A slight chance of thunderstorms in the late evening and early morning, then a chance of showers and thunderstorms late. Humid with lows in the lower 70s. Southwest winds around 5 mph. Chance of precipitation 40 percent.
Sunday   Mostly cloudy. A chance of showers and thunderstorms. Humid with highs in the mid 80s. West winds 5 to 10 mph. Chance of precipitation 30 percent.
Sunday night   Partly cloudy. A slight chance of showers in the evening. Humid with lows in the mid 60s. Northwest winds around 5 mph. Chance of precipitation 20 percent.
Monday   Partly cloudy. Highs in the lower 80s.
Monday night   Partly cloudy. Lows in the lower 60s.
Tuesday   Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 80s.
Tuesday night   Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 40 percent.
Wednesday   Mostly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 50 percent.
Wednesday night   Mostly cloudy. Lows in the lower 60s.
Thursday   Partly cloudy in the morning, then becoming mostly cloudy. Highs in the upper 70s.
Thursday night   Partly cloudy. Lows around 60.
Friday   Partly cloudy. Highs in the upper 70s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
More Rounds of Showers Through Corn Belt This Weekend
Posted at 11:57AM Fri Aug 14, 2026 CDT
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