| NWS Forecast for: Washington County Issued by: National Weather Service Saint Louis, MO Last Update: 732 AM CDT Sat Mar 14 2026 |  |
| Today: Mostly sunny. Highs in the lower 60s. Southeast winds 10 to 15 mph. Tonight: Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the lower 50s. Southeast winds around 10 mph with gusts up to 20 mph, becoming south 15 to 20 mph with gusts up to 30 mph after midnight. Sunday: Mostly cloudy. Rain with a slight chance of thunderstorms in the afternoon. Windy with highs in the upper 60s. South winds 20 to 30 mph with gusts up to 45 mph. Chance of rain 80 percent. Sunday Night: Rain with a slight chance of thunderstorms in the evening, then a chance of snow after midnight. Light snow accumulation. Windy and much cooler with lows in the lower 20s. Southwest winds 20 to 25 mph, becoming west 25 to 30 mph after midnight. Chance of precipitation near 100 percent. Monday: Mostly cloudy. A chance of snow in the morning. Windy and much cooler. Near steady temperature in the mid 20s. Northwest winds 20 to 30 mph with gusts up to 40 mph. Chance of snow 40 percent. Monday Night: Mostly cloudy in the evening, then clearing. Brisk, cooler with lows 10 to 15. Wind chill values as low as zero. Tuesday: Sunny. Highs in the mid 30s. Wind chill values as low as zero in the morning. Tuesday Night: Mostly cloudy. A slight chance of snow in the evening, then a chance of snow after midnight. Not as cool. Near steady temperature in the lower 30s. Chance of snow 40 percent. Wednesday: Mostly cloudy in the morning, then becoming mostly sunny. Not as cool with highs in the upper 50s. Wednesday Night And Thursday: Mostly clear. Lows in the upper 30s. Highs in the upper 60s. Thursday Night: Partly cloudy. Lows in the mid 40s. Friday: Sunny. Highs in the upper 60s. | |
| Zone Forecast: Washington County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |