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Back Lake, IL Weather Forecast
Back Lake, IL Weather Forecast Date: 937 AM CDT Tue Sep 22 2026
The area/counties/county of: Mason, including the city of Havana.or toggle through each period.
Rest of Today... Cloudy with scattered showers late this morning, then partly sunny with scattered sprinkles this afternoon. Highs in the upper 60s. Northeast winds around 10 mph. Chance of rain 30%.
Tonight... Mostly cloudy. Scattered sprinkles in the evening. Lows in the mid 50s. Northeast winds 5 to 10 mph.
Wednesday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 60s. Northeast winds 5 to 10 mph.
Wednesday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.
Thursday... Partly sunny. Highs in the lower 70s. Northeast winds around 5 mph.
Thursday Night... Partly cloudy. Lows in the mid 50s.
Friday... Partly sunny. Highs in the mid 70s.
Friday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s.
Saturday... Mostly cloudy. Highs in the lower 70s. Lows in the mid 50s.
Saturday Night... Mostly cloudy. Highs in the lower 70s. Lows in the mid 50s.
Sunday... Partly sunny. Highs in the upper 70s.
Sunday Night... Partly cloudy. Lows in the upper 50s. Highs in the lower 80s.
POP = Probability of Precipitation
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