| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 121 PM CDT Sat Jul 20 2019 |  |
This Afternoon: Hot and humid. Mostly sunny. High in the mid 90s. Heat index readings of around 107. South wind around 10 mph. Tonight: Mostly clear. Low in the upper 70s. Highest heat index readings of around 100 early in the evening. South wind around 10 mph in the evening becoming light after midnight. Sunday: Hot and humid. Partly sunny with a 30 percent chance of showers and thunderstorms. High in the lower 90s. Highest heat index readings of around 105 in the late morning and afternoon. West wind around 10 mph. Sunday Night: Showers and thunderstorms likely. Low in the lower 70s. Light wind. Chance of rain 60 percent. Monday: Mostly cloudy with a 40 percent chance of showers and thunderstorms. High around 80. North wind around 10 mph. Gusts up to 25 mph in the afternoon. Monday Night: Cooler. Mostly clear. Low in the lower 60s. Tuesday: Sunny. High in the lower 80s. Tuesday Night: Clear. Low around 60. Wednesday: Mostly sunny. High in the mid 80s. Wednesday Night: Clear. Low in the lower 60s. Thursday Through Friday: Mostly clear. High in the upper 80s. Low in the mid 60s. | |
| Zone Forecast: St. Clair County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |