County Forecast for Watseka , IL
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151500-
Iroquois-
Including the cities of Watseka and Gilman
246 AM CDT Wed Jul 15 2026

Rest of tonight   Clear. Patchy fog. Near steady temperature around 70. Light and variable winds.
Wednesday   Mostly sunny in the morning, then becoming partly cloudy. Patchy fog early in the morning. Humid with highs in the lower 90s. West winds around 5 mph. Heat index values up to 101.
Wednesday night   Partly cloudy. Humid with lows in the lower 70s. West winds around 5 mph in the evening, becoming light and variable.
Thursday   Partly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. Light and variable winds, becoming southwest around 5 mph in the afternoon. Chance of precipitation 30 percent. Heat index values up to 101.
Thursday night   Partly cloudy. A slight chance of showers and thunderstorms. Humid with lows in the lower 70s. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of precipitation 20 percent.
Friday   A chance of thunderstorms. Showers. Highs in the upper 80s. Chance of precipitation 80 percent.
Friday night   Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 70s. Chance of precipitation 20 percent.
Saturday   Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of precipitation 20 percent.
Saturday night   Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 60s. Chance of precipitation 30 percent.
Sunday   Mostly sunny. Highs in the upper 80s.
Sunday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s.
Monday   Partly cloudy. Highs in the upper 80s.
Monday night   Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 60s. Chance of precipitation 40 percent.
Tuesday   Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 80s.
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DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Northern Heat, Southern Storms Continue Wednesday
Posted at 12:00PM Tue Jul 14, 2026 CDT
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