| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 858 PM CDT Fri Jun 12 2026 | |
| Tonight: Mostly clear. Lows in the mid 60s. Northeast winds around 5 mph, becoming southeast after midnight. Saturday: Partly sunny with scattered showers and thunderstorms. Highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 40 percent. Saturday Night: Showers, thunderstorms. Lows in the mid 60s. South winds 5 to 10 mph, becoming west with gusts up to 20 mph after midnight. Chance of rain 90 percent. Sunday: Mostly cloudy with isolated showers in the morning, then mostly sunny in the afternoon. Less humid with highs in the mid 70s. Northwest winds 10 to 15 mph with gusts up to 25 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. Monday Night: Mostly clear. Lows in the upper 50s. Tuesday: Mostly sunny. Highs in the lower 80s. Tuesday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 40 percent. Wednesday: Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. Wednesday Night: A chance of thunderstorms in the evening. Showers likely. Lows in the upper 60s. Chance of rain 70 percent. Thursday: 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 mid 80s. Chance of rain 40 percent. Thursday Night: Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the mid 60s. Chance of rain 50 percent. Juneteenth: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. 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/ |