| NWS Forecast for: Washington County Issued by: National Weather Service Saint Louis, MO Last Update: 1108 AM CDT Fri Oct 2 2026 | |
| This Afternoon: Cloudy with a slight chance of very light drizzle early, then partly sunny. Much cooler with highs in the upper 60s. Northeast winds 5 to 10 mph with gusts up to 20 mph. Tonight: Mostly clear. Lows in the lower 50s. Northeast winds 5 to 10 mph. Saturday: Sunny. Highs in the lower 70s. East winds around 5 mph. Saturday Night: Partly cloudy. Lows in the lower 50s. East winds around 5 mph in the evening, becoming light and variable. Sunday: Sunny. Highs in the upper 70s. North winds around 5 mph. Sunday Night And Monday: Clear. Lows in the upper 40s. Highs in the lower 70s. Monday Night And Tuesday: Clear. Lows in the mid 40s. Highs in the mid 70s. Tuesday Night And Wednesday: Mostly clear. Lows in the upper 40s. Highs in the lower 80s. Wednesday Night: Mostly clear. Lows in the lower 50s. Thursday: Sunny. Highs in the lower 80s. | |
| Zone Forecast: Washington County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |