| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 538 AM CDT Sat Jun 13 2026 | |
| Today: Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 50 percent. Tonight: Showers likely with a chance of thunderstorms. Lows in the mid 60s. South winds 5 to 10 mph, becoming southwest after midnight. Chance of rain 70 percent. Sunday: Mostly sunny. A slight chance of showers and thunderstorms in the morning. Cooler. Less humid with highs in the mid 70s. Northwest winds 10 to 15 mph. Chance of rain 20 percent. Sunday Night: Partly cloudy. Cooler with lows in the mid 50s. Northwest winds 10 to 15 mph, diminishing to around 5 mph after midnight. Monday: Mostly sunny. Highs in the upper 70s. West winds around 5 mph. Monday Night: Mostly clear. Lows in the upper 50s. Tuesday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. Tuesday Night: Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent. Wednesday: Mostly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent. Wednesday Night: A chance of thunderstorms in the evening. Showers likely. Lows around 70. Chance of rain 70 percent. Thursday: Partly sunny with a 50 percent chance of showers. Highs in the mid 80s. Thursday Night: Partly cloudy with a 50 percent chance of showers. Lows in the mid 60s. Juneteenth: Mostly sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent. | |
| Zone Forecast: St. Clair County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |