| National Weather Service Forecast for:
St. Charles County Issued by: NWS National Weather Service Saint Louis, MO |
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| Updated: 228 PM CST Wed Nov 11 2026 | ||||||||||||||||||
| St. Charles , MO | ||||||||||||||||||
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| This Afternoon |
Sunny. Highs in the lower 70s. Temperature falling into the mid 60s late. Northwest winds 15 to 20 mph with gusts up to 30 mph. |
| Tonight |
Mostly clear. Lows in the lower 40s. Northwest winds 10 to 15 mph. |
| Thursday |
Partly sunny. A slight chance of showers in the afternoon. Much cooler with highs in the lower 50s. Northwest winds 15 to 20 mph. Chance of rain 20 percent. |
| Thursday Night |
Partly cloudy in the evening, then clearing. Cooler with lows around 30. Northwest winds 10 to 15 mph. |
| Friday |
Mostly sunny. Highs in the mid 40s. Northwest winds 10 to 15 mph. |
| Friday Night |
Mostly clear. Lows in the upper 20s. |
| Saturday |
Mostly clear. Highs in the upper 40s. |
| Saturday Night |
Mostly clear. Lows in the upper 20s. |
| Sunday |
Partly cloudy. Highs in the lower 50s. |
| Sunday Night |
Partly cloudy. Lows around 30. |
| Monday |
Mostly clear. Highs in the lower 50s. |
| Monday Night |
Mostly clear. Lows around 30. |
| Tuesday |
Mostly clear. Highs in the lower 50s. |
| Zone Forecast |
St. Charles County |
Forecast from NOAA-NWS for St. Charles County. (Zone forecast)