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Potomac, IL 7-Day Night Weather Forecast
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Potomac, IL Weather Forecast
Potomac, IL Weather Forecast Date: 937 PM CDT Fri Sep 04 2026
The area/counties/county of: Vermilion, including the city of Danville.or toggle through each period.
Rest of Tonight... Mostly clear late this evening, then partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds around 5 mph. Chance of rain 20%.
Saturday... Sunny with highs in the lower 90s. Northwest winds 5 to 10 mph. Heat index values up to 102.
Saturday Night... Mostly clear in the evening, then becoming mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph.
Sunday... Sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows around 60. East winds around 5 mph.
Labor Day... Sunny. Highs in the mid 80s.
Monday Night... Partly cloudy. Lows in the lower 60s. Highs around 90.
Tuesday... Partly cloudy. Lows in the lower 60s. Highs around 90.
Tuesday Night... Mostly clear. Lows in the lower 70s.
Wednesday... Mostly sunny. Highs in the mid 90s. Heat index values up to 100.
Wednesday Night... Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 30%.
Thursday... Partly cloudy. Highs in the mid 80s. Lows in the lower 60s.
POP = Probability of Precipitation
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