| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 429 AM CST Wed Jan 21 2026 |  |
| Today: Sunny. Highs in the mid 40s. West winds 10 to 15 mph. Gusts up to 30 mph this afternoon. Tonight: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 20s. West winds 10 to 15 mph, becoming northwest after midnight. Thursday: Partly sunny. Highs in the upper 30s. Northwest winds around 5 mph. Thursday Night: Mostly cloudy. Cooler with lows around 8 above. North winds around 5 mph, increasing to 10 to 15 mph with gusts up to 25 mph after midnight. Wind chill values as low as 5 below after midnight. Friday: Mostly cloudy and much cooler. Near steady temperature around 11. North winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 8 below. Friday Night: Cloudy. A slight chance of snow after midnight. Cold with lows around zero. Chance of snow 20 percent. Wind chill values as low as 15 below. Saturday: Cloudy with a 50 percent chance of snow. Highs 10 to 15. Wind chill values as low as 15 below. Saturday Night: Mostly cloudy. A chance of snow, mainly in the evening. Lows around 10 above. Chance of snow 50 percent. Wind chill values as low as 5 below. Sunday: Partly sunny. A slight chance of snow in the morning. Highs around 20. Chance of snow 20 percent. Wind chill values as low as 5 below. Sunday Night: Partly cloudy in the evening, then clearing. Cold with lows zero to 5 above zero. Monday And Monday Night: Mostly clear. Highs in the lower 20s. Lows around 10 above. Wind chill values as low as 5 below. Tuesday: Mostly sunny. Not as cool with highs in the mid 30s. | |
| Zone Forecast: St. Clair County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |