| NWS Forecast for: St. Charles County Issued by: National Weather Service Saint Louis, MO Last Update: 438 AM CST Wed Mar 4 2026 | |
Today: Patchy fog this morning. Cloudy with a chance of thunderstorms. A chance of showers this morning, then showers this afternoon. Highs in the lower 60s. East winds around 5 mph, becoming south around 5 mph this afternoon. Chance of rain 90 percent. Tonight: A chance of thunderstorms. Showers. Patchy fog. Near steady temperature in the mid 50s. South winds around 5 mph. Chance of rain near 100 percent. Thursday: Mostly cloudy. Patchy fog in the morning. Showers likely, mainly in the morning. Highs in the upper 60s. West winds 5 to 10 mph. Chance of rain 70 percent. Thursday Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 60 percent. Friday: Partly sunny. A chance of showers, mainly in the morning. Not as cool with highs in the upper 70s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent. Friday Night: A chance of showers and thunderstorms in the evening, then showers with a slight chance of thunderstorms after midnight. Lows in the mid 50s. Chance of rain near 100 percent. Saturday: Mostly cloudy with a chance of showers in the morning, then mostly sunny in the afternoon. Cooler with highs in the mid 60s. Chance of rain 50 percent. Saturday Night: Partly cloudy in the evening, then clearing. Cooler with lows around 40. Sunday And Sunday Night: Mostly clear. Highs in the mid 60s. Lows in the upper 40s. Monday: Sunny. Not as cool with highs in the upper 70s. Monday Night: Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Not as cool with lows around 60. Chance of rain 40 percent. Tuesday: Partly sunny with a chance of showers with a slight chance of thunderstorms in the morning, then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent. | |
| Zone Forecast: St. Charles County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |