| National Weather Service Forecast for:
St. Charles County Issued by: NWS National Weather Service Saint Louis, MO |
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| Updated: 437 AM CST Sun Nov 15 2026 | ||||||||||||||||||
| St. Charles , MO | ||||||||||||||||||
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| Today |
Sunny. Highs in the mid 50s. East winds around 5 mph. |
| Tonight |
Mostly clear. Lows in the upper 20s. East winds around 5 mph. |
| Monday |
Sunny. Highs in the upper 50s. South winds around 5 mph. |
| Monday Night |
Clear. Lows in the lower 30s. Southeast winds around 5 mph in the evening, becoming light and variable. |
| Tuesday |
Sunny. Highs in the upper 50s. South winds around 5 mph. |
| Tuesday Night |
Clear. Lows in the mid 30s. |
| Wednesday |
Partly cloudy. Highs in the mid 60s. |
| Wednesday Night |
Partly cloudy. Lows in the upper 40s. |
| Thursday |
Partly cloudy. Highs in the mid 60s. |
| Thursday Night |
Partly cloudy. Lows in the upper 40s. |
| Friday |
Partly cloudy. Highs in the mid 60s. |
| Friday Night |
Partly cloudy. Lows in the upper 40s. |
| Saturday |
Mostly sunny. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs in the lower 70s. Chance of rain 40 percent. |
| Zone Forecast |
St. Charles County |
Forecast from NOAA-NWS for St. Charles County. (Zone forecast)