| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 533 PM CDT Mon Mar 16 2026 | |
| Tonight: Mostly cloudy. Scattered flurries this evening. Lows around 15. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 2 above. Tuesday: Sunny in the morning, then becoming partly sunny. Highs in the mid 30s. Northwest winds 5 to 10 mph with gusts up to 20 mph, becoming southwest in the afternoon. Wind chill values as low as 2 above in the morning. Tuesday Night: Cloudy with a chance of snow. A slight chance of rain after midnight. Not as cool. Near steady temperature in the lower 30s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 50 percent. Wednesday: Mostly sunny. Not as cool with highs in the mid 60s. South winds 10 to 15 mph, becoming west 5 to 10 mph in the afternoon. Wednesday Night: Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the lower 40s. Southwest winds around 5 mph. Thursday Through Friday: Partly cloudy. Highs in the mid 70s. Lows in the upper 40s. Friday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. Saturday And Saturday Night: Mostly clear. Highs in the upper 70s. Lows around 50. Sunday: Sunny. Highs in the lower 70s. Sunday Night And Monday: Partly cloudy. Lows around 40. Highs in the mid 50s. | |
| Zone Forecast: St. Clair County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |