| NWS Forecast for: St. Louis County Issued by: National Weather Service Saint Louis, MO Last Update: 359 PM CDT Sat May 16 2026 |  |
Tonight: Mostly cloudy. A chance of showers and thunderstorms this evening. Lows in the mid 60s. Southeast winds 5 to 10 mph. Chance of rain 30 percent. Sunday: Sunny. Highs in the upper 80s. South winds 15 to 20 mph with gusts up to 30 mph. Sunday Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 70. South winds 15 to 20 mph with gusts up to 30 mph. Monday: Partly sunny with a slight chance of showers and thunderstorms in the morning, then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent. Monday Night: Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Tuesday: Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the upper 80s. Chance of rain 90 percent. Tuesday Night: Showers with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Cooler with lows around 60. Chance of rain 90 percent. Wednesday: Mostly cloudy in the morning, then becoming partly sunny. A slight chance of thunderstorms in the morning. A slight chance of showers. Much cooler with highs in the lower 70s. Chance of rain 20 percent. Wednesday Night: Mostly cloudy with a 20 percent chance of showers. Lows in the lower 50s. Thursday: Partly sunny. Highs in the lower 70s. Thursday Night Through Friday Night: Mostly cloudy with a 20 percent chance of showers. Lows in the mid 50s. Highs in the mid 70s. Saturday: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. | |
| Zone Forecast: St. Louis County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |