| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 1227 AM CST Fri Feb 20 2026 |  |
Rest Of Tonight: Partly cloudy. Much cooler with lows in the lower 30s. West winds 15 to 20 mph with gusts up to 40 mph. Friday: Sunny. Much cooler with highs in the lower 40s. West winds 15 to 20 mph. Gusts up to 40 mph in the morning. Friday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 20s. Northwest winds 5 to 10 mph. Saturday: Partly sunny in the morning, then clearing. Highs in the lower 40s. Northwest winds 10 to 15 mph. Saturday Night: Mostly clear. Lows in the lower 20s. Northwest winds 10 to 15 mph. Sunday Through Monday Night: Mostly clear. Highs in the mid 30s. Lows around 20. Wind chill values as low as 5 above. Tuesday And Tuesday Night: Mostly cloudy. Highs around 50. Lows in the upper 30s. Wednesday: Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 50s. Wednesday Night And Thursday: Partly cloudy. A 20 percent chance of rain. Lows in the mid 30s. Highs in the mid 50s. | |
| Zone Forecast: St. Clair County | |
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