| NWS Forecast for: Marion County Issued by: National Weather Service Saint Louis, MO Last Update: 822 PM CDT Sun Sep 20 2026 |  |
| Tonight: Mostly cloudy with a chance of thunderstorms. A chance of showers this evening, then showers likely after midnight. Lows in the upper 60s. North winds 5 to 10 mph. Chance of rain 70 percent. Monday: Mostly cloudy. A chance of showers and thunderstorms in the morning. Much cooler with highs in the upper 70s. North winds 5 to 10 mph. Chance of rain 40 percent. Monday Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows around 60. Northeast winds 5 to 10 mph. Tuesday: Partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph. Tuesday Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph. Wednesday Through Friday: Partly cloudy. Highs in the mid 70s. Lows in the mid 50s. Friday Night And Saturday: Mostly cloudy with a 20 percent chance of showers. Lows in the mid 50s. Highs in the upper 70s. Saturday Night And Sunday: Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. | |
| Zone Forecast: Marion County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |