County Forecast for Watseka , IL
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170200-
Iroquois-
Including the cities of Watseka and Gilman
121 PM CDT Wed Sep 16 2026

This afternoon   Mostly cloudy. Scattered showers. Not as warm. Near steady temperature in the upper 70s. North winds 5 to 10 mph. Chance of precipitation 30 percent.
Tonight   Partly cloudy in the evening, then becoming mostly cloudy. Scattered showers with isolated thunderstorms in the evening, then numerous showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds around 5 mph in the evening, becoming light and variable. Chance of precipitation 70 percent.
Thursday   Showers and thunderstorms in the morning, then isolated showers and thunderstorms early in the afternoon. Humid with highs in the lower 80s. North winds around 5 mph, becoming northwest in the afternoon. Chance of precipitation near 100 percent.
Thursday night   Mostly cloudy. Isolated showers and thunderstorms in the evening. Lows in the mid 60s. Northeast winds around 5 mph. Chance of precipitation 20 percent.
Friday   Mostly cloudy. Isolated showers and thunderstorms in the morning. Highs in the lower 80s. East winds around 5 mph. Chance of precipitation 20 percent.
Friday night   Partly cloudy. Isolated showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 20 percent.
Saturday   Partly cloudy with isolated showers and thunderstorms in the morning, then mostly cloudy with scattered showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of precipitation 50 percent.
Saturday night   Showers likely with a chance of thunderstorms. Lows in the upper 60s. Chance of precipitation 70 percent.
Sunday   Mostly cloudy with a chance of showers. Highs in the upper 70s. Chance of precipitation 50 percent.
Sunday night   Mostly cloudy with a chance of showers. Lows in the lower 60s. Chance of precipitation 50 percent.
Monday   A chance of showers in the morning. Mostly cloudy. Highs in the upper 70s. Chance of precipitation 50 percent.
Monday night   Mostly cloudy with a 40 percent chance of showers. Lows in the upper 50s.
Tuesday   Mostly cloudy with a 30 percent chance of showers. Highs in the lower 70s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Another Day of Spotty Showers and Storms in the Corn Belt
Posted at 5:34AM Wed Sep 16, 2026 CDT
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