| NWS Forecast for: Marion County Issued by: National Weather Service Saint Louis, MO Last Update: 332 AM CDT Fri Sep 4 2026 |  |
Today: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 106. Tonight: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph in the evening, becoming light and variable. Heat index values up to 104 early in the evening. Saturday: Sunny, hot with highs in the upper 90s. West winds around 5 mph, becoming northwest around 5 mph in the afternoon. Heat index values up to 105. Saturday Night: Mostly clear. Lows in the lower 70s. Northeast winds around 5 mph. Heat index values up to 103 early in the evening. Sunday: Sunny. Highs in the lower 90s. East winds 5 to 10 mph. Heat index values up to 100. Sunday Night: Partly cloudy. Lows in the upper 60s. Labor Day And Monday Night: Mostly clear. Highs around 90. Lows around 70. Tuesday: Mostly sunny. Hot with highs in the mid 90s. Tuesday Night: Mostly clear. Lows in the upper 70s. Wednesday: Sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the mid 90s. Chance of rain 20 percent. Wednesday Night: Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the mid 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening. Thursday: Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. | |
| Zone Forecast: Marion County | |
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