| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 128 PM CDT Sat May 30 2026 | |
| This Afternoon: Partly sunny with isolated showers and thunderstorms. Near steady temperature in the lower 80s. East winds 5 to 10 mph. Chance of rain 20 percent. Tonight: Mostly cloudy. Isolated showers and thunderstorms in the evening. Lows in the mid 60s. East winds 5 to 10 mph. Chance of rain 20 percent. Sunday: Partly sunny in the morning, then becoming mostly cloudy. Scattered showers with isolated thunderstorms. Highs in the lower 80s. Southeast winds 5 to 10 mph. Chance of rain 50 percent. Sunday Night: Mostly cloudy. Isolated showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. Lows in the lower 60s. Southeast winds around 5 mph. Chance of rain 70 percent. Monday: Mostly cloudy with showers and thunderstorms likely in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. East winds around 5 mph, becoming northeast around 5 mph in the afternoon. Chance of rain 70 percent. Monday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s. Tuesday Through Thursday: Mostly clear. Highs in the lower 80s. Lows in the upper 50s. Thursday Night: Partly cloudy. Lows in the mid 60s. Friday: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. | |
| Zone Forecast: St. Clair County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |