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St Marys, MO Weather Forecast
St Marys, MO Weather Forecast Date: 452 AM CDT Sun Oct 04 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... Sunny. Highs around 80. Northwest winds 5 to 10 mph.
Tonight... Mostly clear. Lows in the lower 50s. North winds around 5 mph.
Monday... Sunny. Highs in the mid 70s. Northeast winds around 5 mph.
Monday Night... Clear. Lows in the upper 40s. East winds around 5 mph.
Tuesday... Sunny. Highs in the upper 70s. South winds around 5 mph.
Tuesday Night... Clear. Lows in the mid 50s. Highs in the mid 80s.
Wednesday... Clear. Lows in the mid 50s. Highs in the mid 80s.
Thursday... Clear. Lows in the mid 50s. Highs in the mid 80s.
Thursday Night... Mostly clear. A slight chance of showers in the evening. Lows in the upper 50s. Chance of rain 20%.
Friday... Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
Friday Night... Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
POP = Probability of Precipitation
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