| NWS Forecast for: St. Louis County Issued by: National Weather Service Saint Louis, MO Last Update: 227 AM CDT Sat Apr 18 2026 |  |
Rest Of Tonight: Showers with a slight chance of thunderstorms. Cooler with lows in the upper 40s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent. Saturday: Mostly cloudy with a chance of showers in the morning, then mostly sunny in the afternoon. Much cooler with highs in the upper 50s. Northwest winds 15 to 20 mph. Chance of rain 50 percent. Saturday Night: Clear. Lows around 40. Northwest winds 10 to 15 mph, becoming west around 5 mph after midnight. Sunday: Sunny. Highs in the upper 60s. West winds 10 to 15 mph with gusts up to 25 mph. Sunday Night: Mostly clear. Lows around 40. North winds 5 to 10 mph, becoming northeast after midnight. Monday And Monday Night: Mostly clear. Highs in the upper 60s. Lows in the lower 50s. Tuesday: Mostly sunny. Not as cool with highs in the upper 70s. Tuesday Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 50s. Chance of rain 20 percent. Wednesday And Wednesday Night: Mostly clear. Highs in the lower 80s. Lows around 60. Thursday: Mostly sunny. Highs in the mid 80s. Thursday Night: Mostly 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 60s. Chance of rain 50 percent. Friday: Showers likely with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent. | |
| Zone Forecast: St. Louis County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |