| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 734 PM CDT Fri Aug 29 2025 |  |
| Tonight: Mostly clear. Lows around 60. East winds around 5 mph. Saturday: Sunny. A slight chance of showers in the afternoon. Highs in the mid 80s. East winds around 5 mph. Chance of rain 20 percent. Saturday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. East winds around 5 mph. Sunday: Partly sunny. Highs in the lower 80s. East winds 5 to 10 mph. Sunday Night: Mostly cloudy. Lows in the upper 50s. East winds around 5 mph. Labor Day And Monday Night: Mostly cloudy. A 20 percent chance of showers. Highs in the upper 70s. Lows around 60. Tuesday: Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. Tuesday Night: A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 50s. Chance of rain 20 percent. Wednesday: Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. Wednesday Night: Partly cloudy. A slight chance of showers in the evening. Lows in the lower 50s. Chance of rain 20 percent. Thursday: Mostly sunny. Highs in the lower 70s. Thursday Night And Friday: Mostly clear. Lows in the upper 40s. Highs in the upper 70s. | |
| Zone Forecast: St. Clair County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |