| NWS Forecast for: Marion County Issued by: National Weather Service Saint Louis, MO Last Update: 1022 PM CDT Mon Oct 12 2026 |  |
| Overnight: Mostly clear. Lows in the upper 60s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Tuesday: Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 101 in the afternoon. Tuesday Night: Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Wednesday: A chance of thunderstorms. Showers, cooler with highs in the lower 80s. West winds around 5 mph. Chance of rain near 100 percent. Wednesday Night: A slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Northeast winds around 5 mph in the evening, becoming light and variable. Chance of rain 70 percent. Thursday: Showers likely with a slight chance of thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 80 percent. Thursday Night: Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy after midnight. Cooler with lows in the mid 50s. Chance of rain 30 percent. Friday: Mostly sunny and breezy. Much cooler with highs in the mid 60s. Friday Night Through Saturday Night: Mostly clear. Lows in the upper 30s. Highs in the lower 60s. Sunday And Sunday Night: Mostly clear. Highs around 70. Lows in the mid 40s. Monday: Mostly sunny. Highs in the mid 70s. | |
| Zone Forecast: Marion County | |
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