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Dennison, IL Weather Forecast
Dennison, IL Weather Forecast Date: 1037 PM CDT Sun Sep 06 2026
The area/counties/county of: Clark, including the city of Marshall.or toggle through each period.
Rest of Tonight... Partly cloudy. Lows around 60. Northeast winds 5 to 10 mph.
Labor Day... Sunny. Highs in the mid 80s. Northeast winds 5 to 10 mph.
Monday Night... Partly cloudy. Lows in the lower 60s. East winds 5 to 10 mph.
Tuesday... Sunny. Highs in the lower 90s. South winds around 5 mph.
Tuesday Night... Mostly clear. Lows around 70. South winds 5 to 10 mph.
Wednesday... Mostly sunny. Hot with highs in the mid 90s.
Wednesday Night... Showers likely with a chance of thunderstorms. Lows in the upper 60s. Chance of rain 70%.
Thursday... Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny in the afternoon. Not as warm with highs in the lower 80s. Chance of rain 50%.
Thursday Night... Mostly clear. Lows in the upper 50s. Highs in the mid 80s.
Friday... Mostly clear. Lows in the upper 50s. Highs in the mid 80s.
Friday Night... Mostly clear. A chance of showers after midnight. Lows in the lower 60s. Chance of rain 30%.
Saturday... Sunny. Highs in the upper 80s.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of rain 30%.
POP = Probability of Precipitation
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