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St Marys, MO 7-Day Weather Forecast
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St Marys Weather Forecast
St Marys, MO Weather Forecast Date: 548 PM CDT Tue Sep 15 2026
Weather forecast for St Marys, MO
Tonight Lo: 75°F Lo: 24°C |
Tonight... Partly cloudy this evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the mid 70s. Southeast winds around 5 mph. Chance of rain 50%. Heat index values up to 101 early this evening. |
Wed Hi: 95°FHi: 35°C Lo: 75°F Lo: 24°C |
Wednesday... Partly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. East winds around 5 mph, becoming south in the afternoon. Chance of rain 50%. Heat index values up to 104. |
Thu Hi: 99°FHi: 37°C Lo: 71°F Lo: 22°C |
Thursday... Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph, becoming northwest around 5 mph in the afternoon. Heat index values up to 106. |
| Fri Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Friday... Mostly clear. Hot. Highs in the mid 90s. Lows in the lower 70s. Heat index values up to 105. |
| Sat Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Saturday... Mostly sunny. Hot with highs in the mid 90s. |
| Sun Hi: 91°FHi: 33°C Lo: 69°F Lo: 21°C |
Sunday... Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40%. |
Mon Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Monday... Mostly cloudy in the morning, then becoming partly sunny. A 40% chance of showers. Highs in the lower 80s. |
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