| NWS Forecast for: St. Clair County Issued by: National Weather Service Saint Louis, MO Last Update: 648 AM CDT Sun May 31 2026 | |
| Today: Partly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Southeast winds around 5 mph. Chance of rain 20 percent. Tonight: Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. Showers. Lows in the mid 60s. Southeast winds around 5 mph. Chance of rain 80 percent. Monday: Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the mid 80s. East winds around 5 mph. Chance of rain 50 percent. Monday Night: Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Northeast winds around 5 mph. Chance of rain 20 percent. Tuesday: Sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph. Tuesday Night And Wednesday: Clear. Lows in the upper 50s. Highs in the lower 80s. Wednesday Night And Thursday: Mostly clear. Lows in the upper 50s. Highs in the mid 80s. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Friday: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. Friday 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 upper 60s. Chance of rain 40 percent. Saturday: Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent. | |
| Zone Forecast: St. Clair County | |
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