| NWS Forecast for: Washington County Issued by: National Weather Service Saint Louis, MO Last Update: 148 PM CDT Tue May 12 2026 | |
This Afternoon: Sunny. Near steady temperature around 80. Southwest winds 10 to 15 mph with gusts up to 25 mph. Tonight: Partly cloudy. Lows in the mid 50s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west after midnight. Wednesday: Sunny. Highs in the mid 70s. Northwest winds 5 to 10 mph with gusts up to 20 mph. Wednesday Night: Clear. Lows in the upper 40s. North winds 5 to 10 mph with gusts up to 20 mph in the evening, becoming light and variable. Thursday: Sunny. Highs in the upper 70s. Southeast winds around 5 mph. Thursday Night: Partly cloudy in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Not as cool with lows in the upper 50s. Chance of rain 50 percent. Friday And Friday Night: Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 90s. Lows in the mid 60s. Chance of rain 20 percent. Saturday: Partly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 50 percent. Saturday Night: Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent. Sunday: Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the upper 80s. Chance of rain 30 percent. Sunday Night: Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent. Monday: Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs around 90. Chance of rain 60 percent. | |
| Zone Forecast: Washington County | |
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