County Forecast for Watseka , IL
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272215-
Iroquois-
Including the cities of Watseka and Gilman
256 AM CDT Sat Jun 27 2026

Today   Mostly cloudy. A slight chance of showers in the late morning and afternoon. Highs in the upper 70s. East winds 5 to 10 mph. Chance of precipitation 20 percent.
Tonight   Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s. East winds 5 to 10 mph.
Sunday   Partly cloudy. Humid with highs in the mid 80s. Southeast winds 5 to 10 mph.
Sunday night   Partly cloudy in the evening, then clearing. Humid with lows in the mid 70s. Southeast winds 5 to 10 mph.
Monday   Mostly sunny in the morning, then becoming partly cloudy. Humid with highs in the lower 90s. South winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Heat index values up to 105.
Monday night   Mostly clear. Lows in the mid 70s.
Tuesday   Mostly sunny. Hot with highs in the lower 90s.
Tuesday night   Clear. Lows in the mid 70s.
Wednesday   Sunny, hot with highs in the mid 90s.
Wednesday night   Mostly clear. Lows in the mid 70s.
Thursday   Mostly sunny. Hot with highs in the lower 90s.
Thursday night   Mostly clear. Lows in the lower 70s.
Friday   Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent.
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DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heatwave Starts This Weekend, Continues Through Next Week
Posted at 12:03PM Fri Jun 26, 2026 CDT
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