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Main Lake, IL 7-Day Night Weather Forecast
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Main Lake, IL Weather Forecast
Main Lake, IL Weather Forecast Date: 157 PM CDT Tue Oct 13 2026
The area/counties/county of: Hamilton, including the city of Mcleansboro.or toggle through each period.
This Afternoon... Sunny. Near steady temperature in the lower 90s. Southwest winds 10 to 15 mph.
Tonight... Mostly clear. Lows in the lower 70s. Southwest winds 5 to 10 mph.
Wednesday... A chance of thunderstorms. Showers. Highs in the lower 80s. Southwest winds 5 to 10 mph, becoming west in the afternoon. Chance of rain 90%.
Wednesday Night... Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely after midnight. Lows in the upper 60s. North winds around 5 mph in the evening, becoming light and variable. Chance of rain 60%.
Thursday... Showers likely. Highs in the mid 80s. South winds around 5 mph, increasing to southwest 10 to 15 mph in the afternoon. Chance of rain 70%.
Thursday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. Lows in the lower 50s. Chance of rain 50%.
Friday... Partly sunny in the morning, then clearing. Breezy and much cooler with highs in the lower 60s.
Friday Night... Mostly clear. Lows in the upper 30s. Highs in the lower 60s.
Saturday... Mostly clear. Lows in the upper 30s. Highs in the lower 60s.
Saturday Night... Clear. Lows in the upper 30s.
Sunday... Sunny. Highs around 70.
Sunday Night... Partly cloudy. Lows in the mid 40s. Highs in the lower 70s.
POP = Probability of Precipitation
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