| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 528 PM CDT Mon May 4 2026 |  |
Tonight: Mostly cloudy with scattered thunderstorms. Scattered showers this evening, then numerous showers after midnight. Lows in the mid 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent. Tuesday: Showers. Scattered thunderstorms, mainly in the morning. Much cooler with highs in the upper 50s. North winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 90 percent. Tuesday Night: Mostly cloudy. Showers with isolated thunderstorms in the evening, then scattered showers after midnight. Cooler with lows in the mid 40s. North winds 10 to 15 mph. Chance of rain 90 percent. Wednesday: Partly sunny. A chance of showers, mainly in the morning. Highs in the upper 50s. North winds 5 to 10 mph. Chance of rain 40 percent. Wednesday Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 40s. North winds 5 to 10 mph. Thursday And Thursday Night: Mostly clear. Highs in the mid 60s. Lows in the mid 40s. Friday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent. Friday 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 around 50. Chance of rain 30 percent. Saturday: Sunny. Highs in the upper 70s. Saturday Night: Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 50s. Chance of rain 20 percent. Sunday: Partly sunny with a chance of showers and thunderstorms. Highs in the mid 70s. Chance of rain 50 percent. Sunday Night: Mostly cloudy with a 50 percent chance of showers. Lows in the lower 50s. Monday: Mostly sunny. A slight chance of showers in the morning. Highs in the lower 70s. Chance of rain 20 percent. | |
| Zone Forecast: St. Clair County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |