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Barr, IL 7-Day Night Weather Forecast
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Barr, IL Weather Forecast
Barr, IL Weather Forecast Date: 127 AM CDT Thu Sep 03 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.
Rest of Tonight... Mostly clear. Near steady temperature around 80. South winds around 5 mph.
Thursday... Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.
Thursday Night... Mostly clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 104 early in the evening.
Friday... Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 107.
Friday Night... Mostly clear. Lows in the upper 70s. South winds around 5 mph in the evening, becoming light and variable. Heat index values up to 105 early in the evening.
Saturday... Mostly clear. Hot. Highs in the mid 90s. Lows in the mid 70s. Heat index values up to 110.
Sunday... Mostly clear. Hot. Highs in the mid 90s. Lows in the mid 70s. Heat index values up to 110.
Sunday Night... Mostly clear. Hot. Lows around 70. Highs in the mid 90s. Heat index values up to 100.
Monday... Mostly clear. Hot. Lows around 70. Highs in the mid 90s. Heat index values up to 100.
Tuesday... Mostly clear. Hot. Lows around 70. Highs in the mid 90s. Heat index values up to 100.
Tuesday Night... Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 100.
POP = Probability of Precipitation
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