| NWS Forecast for: Marion County Issued by: National Weather Service Saint Louis, MO Last Update: 1148 AM CDT Wed Sep 16 2026 |  |
| This Afternoon: Partly sunny with a 50 percent chance of showers. Highs in the mid 80s. East winds around 5 mph. Tonight: Partly cloudy. Humid with lows in the lower 70s. East winds around 5 mph, becoming southeast after midnight. Thursday: Mostly sunny with a slight chance of showers and thunderstorms. Humid with highs in the upper 80s. Southwest winds around 5 mph, becoming northwest around 5 mph in the afternoon. Chance of rain 20 percent. Heat index values up to 101. Thursday Night: Partly cloudy. A slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 20 percent. Friday: Mostly sunny. A slight chance of showers and thunderstorms in the morning. Humid with highs in the upper 80s. Southeast winds around 5 mph. Chance of rain 20 percent. Friday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. Saturday: Partly sunny with a slight chance of showers and thunderstorms. Highs around 90. Chance of rain 20 percent. Saturday Night: Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. Sunday: Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. Sunday Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the mid 60s. Chance of rain 50 percent. Monday: Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 50 percent. Monday Night: Partly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 60. Chance of rain 40 percent. Tuesday: Partly sunny. A chance of showers, mainly in the morning. Highs in the mid 70s. Chance of rain 30 percent. | |
| Zone Forecast: Marion County | |
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