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Willis, IL 7-Day Night Weather Forecast
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Willis, IL Weather Forecast
Willis, IL Weather Forecast Date: 656 AM CDT Sat Sep 05 2026
The area/counties/county of: De Kalb, including the cities of: Dekalb and Sycamore.or toggle through each period.
Today... Partly cloudy. Patchy fog early in the morning. Highs in the mid 80s. Northeast winds 5 to 10 mph.
Tonight... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Northeast winds 5 to 10 mph.
Sunday... Mostly sunny in the morning, then becoming partly cloudy. Highs around 80. East winds 5 to 10 mph.
Sunday Night... Partly cloudy. Lows in the upper 50s. East winds 5 to 10 mph.
Labor Day... Mostly sunny in the morning, then becoming partly cloudy. Highs around 80. Southeast winds 5 to 10 mph.
Monday Night... Partly cloudy. Lows in the lower 60s.
Tuesday... Mostly cloudy in the morning, then becoming partly cloudy. Highs in the mid 80s.
Tuesday Night... Partly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 70s. Chance of precipitation 30%.
Wednesday... Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 80s.
Wednesday Night... Partly cloudy. Lows in the lower 60s.
Thursday... Partly cloudy. Highs around 80.
Thursday Night... Partly cloudy. Lows in the upper 50s.
POP = Probability of Precipitation
Willis Radar Loop
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