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Chain Lake, IL Weather Forecast
Chain Lake, IL Weather Forecast Date: 712 PM CDT Tue Oct 27 2026
The area/counties/county of: Mason, including the city of Havana.or toggle through each period.
Tonight... Mostly cloudy this evening, then becoming partly cloudy. Lows in the lower 50s. South winds around 5 mph.
Wednesday... Sunny. Highs in the upper 70s. South winds 5 to 10 mph.
Wednesday Night... Mostly clear. Lows in the upper 50s. South winds 5 to 10 mph with gusts up to 20 mph.
Thursday... Mostly sunny. Highs in the upper 70s. Southwest winds 5 to 10 mph, becoming west in the afternoon.
Thursday Night... Mostly clear in the evening, then becoming partly cloudy. Lows around 50. Northeast winds around 5 mph.
Friday... Partly sunny in the morning, then becoming mostly cloudy. A 40% chance of showers. Highs in the mid 70s.
Friday Night... Mostly cloudy. Lows in the mid 50s. Highs in the lower 70s.
Saturday... Mostly cloudy. Lows in the mid 50s. Highs in the lower 70s.
Saturday Night... Mostly cloudy with a 40% chance of showers. Lows in the lower 50s. Highs in the upper 60s.
Sunday... Mostly cloudy with a 40% chance of showers. Lows in the lower 50s. Highs in the upper 60s.
Sunday Night... Mostly cloudy. Lows in the lower 50s.
Monday... Mostly cloudy with a chance of showers. Highs in the lower 70s. Chance of rain 50%.
Monday Night... Showers likely, mainly in the evening. Lows in the lower 50s. Chance of rain 60%.
POP = Probability of Precipitation
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