County Forecast for Watseka , IL
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031030-
Iroquois-
Including the cities of Watseka and Gilman
303 PM CDT Thu Jul 2 2026

..extreme heat warning in effect until 7 pm cdt friday   
Tonight   Mostly clear in the evening, then becoming partly cloudy. Isolated showers and thunderstorms late. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent.
Friday   Mostly sunny in the morning, then becoming partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of precipitation 50 percent. Heat index values up to 104.
Friday night   Mostly cloudy. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms late in the evening. A chance of showers and thunderstorms after midnight. Humid with lows in the lower 70s. Southwest winds around 5 mph. Chance of precipitation 50 percent.
Independence day   Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers in the morning. A chance of thunderstorms. Showers likely in the afternoon. Humid with highs in the upper 80s. Southwest winds around 5 mph. Chance of precipitation 70 percent.
Saturday night   Showers likely with a chance of thunderstorms. Humid with lows in the upper 60s. West winds around 5 mph. Chance of precipitation 60 percent.
Sunday   Mostly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 50 percent.
Sunday night   Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the mid 60s. Chance of precipitation 40 percent.
Monday   Mostly cloudy in the morning, then becoming partly cloudy. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 20 percent.
Monday night   Partly cloudy. Lows in the mid 60s.
Tuesday   Partly cloudy in the morning, then becoming mostly cloudy. Highs in the mid 80s.
Tuesday night   Partly cloudy. Lows in the mid 60s.
Wednesday   Partly cloudy. Highs in the mid 80s.
Wednesday night   Partly cloudy. Lows in the mid 60s.
Thursday   Partly cloudy. A chance of showers in the afternoon. Highs in the mid 80s. Chance of precipitation 40 percent.
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DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Hot, Humid, Stormy Holiday Weekend
Posted at 11:59AM Thu Jul 2, 2026 CDT
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