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Anderson, IL 7-Day Night Weather Forecast
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Anderson, IL Weather Forecast
Anderson, IL Weather Forecast Date: 716 PM CDT Tue Sep 15 2026
The area/counties/county of: De Kalb, including the cities of: Dekalb and Sycamore.or toggle through each period.
Tonight... Cloudy. A slight chance of thunderstorms in the evening. A chance of showers. A chance of thunderstorms after midnight. Lows around 60. North winds 5 to 10 mph. Chance of precipitation 50%.
Wednesday... Mostly cloudy. A slight chance of showers and thunderstorms early in the morning, then a chance of showers and thunderstorms in the late morning and early afternoon. A slight chance of showers and thunderstorms late. Highs in the lower 70s. Northeast winds 5 to 10 mph. Chance of precipitation 30%.
Wednesday Night... Mostly cloudy. A slight chance of showers and thunderstorms early in the evening, then a chance of showers and thunderstorms in the late evening and overnight. Lows in the lower 60s. Northeast winds 5 to 10 mph. Chance of precipitation 50%.
Thursday... Mostly cloudy. A chance of showers and thunderstorms in the morning. Humid with highs in the upper 70s. North winds around 5 mph. Chance of precipitation 40%.
Thursday Night... Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the lower 60s. Northeast winds around 5 mph. Chance of precipitation 20%.
Friday... Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 70s. Chance of precipitation 50%.
Friday Night... Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of precipitation 70%.
Saturday... Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 70%.
Saturday Night... A chance of thunderstorms in the evening. Showers likely. Lows in the mid 60s. Chance of precipitation 70%.
Sunday... Mostly cloudy with a 50% chance of showers. Highs in the mid 70s.
Sunday Night... Mostly cloudy with a 40% chance of showers. Lows in the upper 50s.
Monday... Mostly cloudy. A chance of showers in the morning. Highs in the lower 70s. Chance of precipitation 30%.
Monday Night... Mostly cloudy. Lows in the mid 50s.
POP = Probability of Precipitation
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