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Harmon, IL 7-Day Night Weather Forecast
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Harmon, IL Weather Forecast
Harmon, IL Weather Forecast Date: 801 PM CDT Thu Sep 03 2026
The area/counties/county of: Lee, including the city of Dixon.or toggle through each period.
Tonight... Clear. Lows in the lower 70s. South winds around 5 mph.
Friday... Partly cloudy in the morning, then clearing. Hot, humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Heat index values up to 103.
Friday Night... Mostly clear. A chance of showers with a slight chance of thunderstorms after midnight. Humid with lows around 70. Southwest winds around 5 mph, becoming east after midnight. Chance of precipitation 40%.
Saturday... Partly cloudy in the morning, then becoming mostly sunny. Humid with highs in the upper 80s. Northeast winds 5 to 10 mph.
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... Partly cloudy. Highs in the lower 80s.
Sunday Night... Partly cloudy. Lows in the lower 60s.
Labor Day... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the lower 80s.
Monday Night... Partly cloudy. Lows in the lower 60s.
Tuesday... Partly cloudy. Highs in the upper 80s.
Tuesday Night... Partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of precipitation 30%.
Wednesday... Partly cloudy. Highs in the upper 80s.
Wednesday Night... Partly cloudy with a 40% chance of showers. Lows in the upper 60s.
POP = Probability of Precipitation
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