| NWS Forecast for: Washington County Issued by: National Weather Service Saint Louis, MO Last Update: 303 PM CDT Thu May 14 2026 | |
Tonight: Mostly clear this evening, then becoming mostly cloudy. Lows in the lower 50s. Southeast winds 5 to 10 mph. Friday: Mostly cloudy with a chance of showers and thunderstorms in the morning, then mostly sunny with a slight chance of showers in the afternoon. Highs in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Friday 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 mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 30 percent. Saturday: Partly sunny with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the lower 80s. Southwest winds 10 to 15 mph. Chance of rain 60 percent. Saturday Night: Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent. Sunday: Sunny. Highs in the upper 80s. Sunday Night: Clear. Lows in the upper 60s. Monday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent. Monday Night: Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 40 percent. Tuesday And Tuesday Night: Showers likely with a chance of thunderstorms. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 70 percent. Wednesday: Partly sunny in the morning, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent. Wednesday Night: A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows around 60. Chance of rain 40 percent. Thursday: Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. | |
| Zone Forecast: Washington County | |
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