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Village of Thomson, ILThomson, IL 7-Day Night Weather Forecast
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Thomson, IL Weather Forecast
Thomson, IL Weather Forecast Date: 916 AM CDT Fri Sep 04 2026
The area/counties/county of: Carroll, including the city of Mount Carroll.or toggle through each period.
Rest of Today... Sunny. A slight chance of showers with isolated thunderstorms late this morning. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20%. Heat index values up to 105.
Tonight... Partly cloudy in the evening, then becoming mostly clear. A slight chance of showers and thunderstorms. Humid with lows in the lower 70s. West winds around 5 mph, becoming north after midnight. Chance of rain 20%. Heat index values up to 103 early in the evening.
Saturday... Patchy fog in the morning. Sunny with highs in the upper 80s. Northeast winds 5 to 10 mph. Heat index values up to 100.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the mid 60s. Northeast winds 5 to 10 mph.
Sunday... Mostly sunny. Humid with highs in the lower 80s. East winds around 5 mph.
Sunday Night... Partly cloudy. Lows in the lower 60s. Highs in the lower 80s.
Monday... Partly cloudy. Lows in the lower 60s. Highs in the lower 80s.
Tuesday... Partly sunny. Highs in the upper 80s.
Tuesday Night... Partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 50%.
Wednesday... Partly sunny. Highs in the upper 80s.
Wednesday Night... Partly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 40%.
POP = Probability of Precipitation
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