| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 903 PM CDT Tue Apr 21 2026 |  |
| Tonight: Mostly clear. Lows in the upper 50s. Southwest winds 10 to 15 mph. Gusts up to 30 mph this evening. Wednesday: Sunny. Highs in the upper 70s. Southwest winds 5 to 10 mph. Wednesday Night: Mostly clear. Lows in the upper 50s. South winds around 5 mph. Thursday: Sunny. Highs in the lower 80s. South winds 15 to 20 mph with gusts up to 30 mph. Thursday Night: Partly cloudy in the evening, then mostly cloudy with showers likely with a chance of thunderstorms after midnight. Lows in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent. Friday: A chance of thunderstorms. Showers. Highs in the upper 70s. Chance of rain 90 percent. Friday Night: Mostly cloudy in the evening, then becoming partly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the mid 50s. Chance of rain 50 percent. Saturday And Saturday Night: Partly cloudy. A 20 percent chance of showers. Highs in the mid 70s. Lows in the lower 50s. Sunday: Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent. Sunday Night: Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 50s. Chance of rain 70 percent. Monday: Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent. Monday Night: Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 50s. Chance of rain 40 percent. Tuesday: Mostly sunny. Highs in the lower 70s. | |
| Zone Forecast: St. Clair County | |
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