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Village of Bethalto, ILBethalto, IL 7-Day Night Weather Forecast
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Bethalto, IL Weather Forecast
Bethalto, IL Weather Forecast Date: 417 AM CDT Sat Sep 05 2026
The area/counties/county of: Madison County Il, including the cities of: Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis.or toggle through each period.
Today... Mostly sunny. Isolated showers and thunderstorms this afternoon. Hot with highs around 100. Northwest winds around 5 mph. Chance of rain 20%. Heat index values up to 110.
Tonight... Partly cloudy with isolated showers in the evening, then mostly clear after midnight. Humid with lows in the lower 70s. Northeast winds around 5 mph. Chance of rain 20%. Heat index values up to 106 early in the evening.
Sunday... Mostly sunny. Highs in the lower 90s. Northeast winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows in the mid 60s. East winds 5 to 10 mph.
Labor Day... Sunny. Highs in the upper 80s. East winds around 5 mph.
Monday Night... Mostly clear. Hot. Lows in the mid 60s. Highs in the mid 90s.
Tuesday... Mostly clear. Hot. Lows in the mid 60s. Highs in the mid 90s.
Tuesday Night... Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 105.
Wednesday... Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 105.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 50%. Heat index values up to 100 early in the evening.
Thursday... Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs around 90. Chance of rain 50%.
Thursday Night... Partly cloudy in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20%.
POP = Probability of Precipitation
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