County Forecast for Watseka , IL
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201600-
Iroquois-
Including the cities of Watseka and Gilman
825 PM CDT Sat Sep 19 2026

Tonight   Mostly cloudy. A chance of sprinkles and a slight chance of thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the upper 60s. Southeast winds around 5 mph, becoming northeast after midnight. Chance of precipitation 50 percent.
Sunday   Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Humid with highs in the mid 70s. Temperature falling into the upper 60s in the afternoon. Northeast winds 5 to 10 mph. Chance of precipitation 80 percent.
Sunday night   Cloudy. A chance of showers with a slight chance of thunderstorms early in the evening. A chance of showers after midnight. A slight chance of thunderstorms late. Lows in the mid 50s. Northeast winds around 10 mph. Chance of precipitation 50 percent.
Monday   Mostly cloudy. Showers likely, mainly in the morning. Highs in the upper 60s. Northeast winds around 10 mph. Chance of precipitation 60 percent.
Monday night   Mostly cloudy. A slight chance of showers. Lows in the lower 50s. Northeast winds 5 to 10 mph. Chance of precipitation 20 percent.
Tuesday   Mostly cloudy with a 50 percent chance of showers. Highs in the mid 60s.
Tuesday night   Mostly cloudy. Lows in the lower 50s.
Wednesday   Mostly cloudy. Highs in the upper 60s.
Wednesday night   Mostly cloudy. Lows in the lower 50s.
Thursday   Mostly cloudy. Highs around 70.
Thursday night   Mostly cloudy. Lows in the lower 50s.
Friday   Mostly cloudy. Highs in the mid 70s.
Friday night   Partly cloudy. Lows in the lower 50s.
Saturday   Partly cloudy in the morning, then becoming mostly sunny. Highs in the mid 70s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heavy Rain Moving Through Northern US This Weekend
Posted at 11:40AM Fri Sep 18, 2026 CDT
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