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Chapin, IL 7-Day Night Weather Forecast
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Chapin, IL Weather Forecast
Chapin, IL Weather Forecast Date: 1037 PM CDT Fri Sep 04 2026
The area/counties/county of: Morgan, including the city of Jacksonville.or toggle through each period.
Rest of Tonight... Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph.
Saturday... Sunny, hot with highs in the upper 90s. Northwest winds around 5 mph. Heat index values up to 107.
Saturday Night... Mostly clear. Humid with lows in the upper 60s. Northeast winds around 5 mph.
Sunday... Mostly sunny. Highs around 90. East winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows in the mid 60s. East winds 5 to 10 mph.
Labor Day... Mostly clear. Highs in the upper 80s. Lows in the mid 60s.
Monday Night... Mostly clear. Highs in the upper 80s. Lows in the mid 60s.
Tuesday... Mostly clear. Hot. Highs in the mid 90s. Lows in the lower 70s.
Tuesday Night... Mostly clear. Hot. Highs in the mid 90s. Lows in the lower 70s.
Wednesday... Mostly sunny. Hot with highs in the upper 90s.
Wednesday Night... Partly cloudy. A chance of showers after midnight. Lows around 70. Chance of rain 30%.
Thursday... Partly cloudy. Highs around 90. Lows in the lower 60s.
POP = Probability of Precipitation
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