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Barr, IL Weather Forecast
Barr, IL Weather Forecast Date: 754 PM CDT Thu Oct 22 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.
Tonight... Clear. Lows in the upper 40s. East winds around 5 mph.
Friday... Sunny. Highs in the mid 70s. Southeast winds around 5 mph.
Friday Night... Mostly clear. Lows in the upper 40s. Southeast winds around 5 mph.
Saturday... Mostly sunny. Highs in the mid 70s. Southeast winds around 5 mph.
Saturday Night... Partly cloudy. Lows in the upper 40s. Southeast winds around 5 mph in the evening, becoming light and variable.
Sunday... Mostly sunny. Highs in the upper 70s.
Sunday Night... Mostly cloudy. Lows in the lower 50s. Highs in the upper 70s.
Monday... Mostly cloudy. Lows in the lower 50s. Highs in the upper 70s.
Tuesday... Mostly cloudy. Highs in the lower 70s. Lows around 50.
Tuesday Night... Mostly cloudy. Highs in the lower 70s. Lows around 50.
Wednesday... Mostly sunny. Highs in the mid 70s.
Wednesday Night... Mostly clear. A slight chance of showers after midnight. Lows in the upper 40s. Chance of rain 20%.
POP = Probability of Precipitation
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