| NWS Forecast for: Washington County Issued by: National Weather Service Saint Louis, MO Last Update: 158 PM CDT Sat Mar 14 2026 | |
This Afternoon: Sunny. Highs in the lower 60s. Southeast winds 10 to 15 mph. Tonight: Mostly clear in the evening, then becoming mostly 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: A slight chance of rain in the morning, then rain with a slight chance of thunderstorms in the afternoon. Windy with highs in the mid 60s. South winds 20 to 30 mph with gusts up to 40 mph. Chance of rain near 100 percent. Sunday Night: Rain with a slight chance of thunderstorms in the evening. A chance of snow. Little or no snow accumulation. Windy and much cooler with lows in the lower 20s. West winds 25 to 30 mph with gusts up to 45 mph. Chance of precipitation near 100 percent. Monday: Mostly cloudy. A slight chance of snow in the morning. Windy and much cooler with highs in the upper 20s. Northwest winds 20 to 30 mph. Gusts up to 45 mph in the morning. Chance of snow 20 percent. Wind chill values as low as 5 above. Monday Night: Partly cloudy in the evening, then clearing. 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 chance of snow after midnight. Not as cool. Near steady temperature in the mid 30s. Chance of snow 40 percent. Wednesday And Wednesday Night: Partly cloudy. Highs in the lower 60s. Lows in the upper 30s. Thursday: Sunny. Highs in the upper 60s. Thursday Night And Friday: Partly cloudy. Lows in the mid 40s. Highs in the lower 70s. | |
| Zone Forecast: Washington County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |