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Hamilton County, IL Weather Forecast
Hamilton County, IL Weather Forecast Date: 734 PM CST Mon Mar 02 2026
The area/counties/county of: Hamilton, including the city of Mcleansboro.or toggle through each period.
Tonight... Cloudy. Patchy fog. Showers likely with a slight chance of thunderstorms after midnight. Near steady temperature in the upper 30s. East winds around 5 mph. Chance of rain 70%.
Tuesday... Mostly cloudy. Showers, mainly in the morning. Not as cool with highs in the mid 60s. Southeast winds 5 to 10 mph, becoming south in the afternoon. Chance of rain 90%.
Tuesday Night... Mostly cloudy. A chance of showers in the evening, then showers likely after midnight. Not as cool with lows in the mid 50s. Southeast winds around 5 mph. Chance of rain 70%.
Wednesday... Showers likely with a chance of thunderstorms. Highs in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 70%.
Wednesday Night... A chance of thunderstorms. Showers likely. Lows in the upper 50s. South winds 5 to 10 mph. Chance of rain 70%.
Thursday... A chance of thunderstorms. Showers. Highs in the lower 70s. Chance of rain 80%.
Thursday Night... Mostly cloudy with a chance of showers. A chance of thunderstorms after midnight. Lows in the upper 50s. Chance of rain 50%.
Friday... Partly sunny. A chance of showers and thunderstorms in the morning. Highs in the upper 70s. Chance of rain 40%.
Friday Night... Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 50%.
Saturday... Showers with a chance of thunderstorms in the morning, then showers likely in the afternoon. Highs in the lower 70s. Chance of rain 90%.
Saturday Night... Mostly cloudy with a 40% chance of showers. Lows in the lower 50s. Highs in the mid 60s.
Sunday... Mostly cloudy with a 40% chance of showers. Lows in the lower 50s. Highs in the mid 60s.
Sunday Night... Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. Chance of rain 30%.
POP = Probability of Precipitation
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