| NWS Forecast for: Washington County Issued by: National Weather Service Saint Louis, MO Last Update: 1033 PM CDT Tue Jul 28 2026 | |
| Overnight: Mostly clear. Cooler with lows in the mid 60s. Northeast winds around 5 mph. Wednesday: Sunny. Highs in the mid 80s. Northeast winds around 5 mph. Wednesday Night: Clear. Lows in the mid 60s. Northeast winds around 5 mph. Thursday: Sunny. Highs in the mid 80s. East winds around 5 mph. Thursday Night: Partly cloudy. Lows in the mid 60s. Light and variable winds. Friday: Partly sunny in the morning, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. Friday Night: Showers likely. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent. Saturday: Partly sunny in the morning, then becoming mostly cloudy. A slight chance of thunderstorms. A chance of showers. Highs in the upper 70s. Chance of rain 50 percent. Saturday Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 50 percent. Sunday: Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. Sunday Night: Partly cloudy. Lows in the upper 60s. Monday: Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. Monday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. Tuesday: Mostly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent. | |
| Zone Forecast: Washington County | |
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