| National Weather Service Forecast for:
St. Charles County Issued by: NWS National Weather Service Saint Louis, MO |
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| Updated: 1217 AM CST Mon Nov 3 2025 | ||||||||||||||||||
| St. Charles , MO | ||||||||||||||||||
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| Rest Of Tonight |
Clear. Near steady temperature in the upper 30s. South winds around 5 mph. |
| Monday |
Sunny. Not as cool with highs in the lower 60s. West winds 5 to 10 mph, becoming northwest in the afternoon. |
| Monday Night |
Mostly clear in the evening, then becoming partly cloudy. Lows around 40. North winds around 5 mph, becoming southeast after midnight. |
| Tuesday |
Sunny. Highs around 70. South winds 10 to 15 mph with gusts up to 25 mph. |
| Tuesday Night |
Partly cloudy in the evening, then clearing. Not as cool with lows in the lower 50s. Southwest winds 10 to 15 mph. |
| Wednesday |
Clear. Highs in the lower 70s. |
| Wednesday Night |
Clear. Lows in the lower 40s. |
| Thursday |
Sunny. Highs in the upper 60s. |
| Thursday Night |
Partly cloudy in the evening, then mostly cloudy with a chance of rain after midnight. Not as cool with lows in the mid 50s. Chance of rain 30 percent. |
| Friday |
Mostly sunny. A slight chance of rain in the morning. Highs around 70. Chance of rain 20 percent. |
| Friday Night |
Partly cloudy. Lows in the lower 40s. Highs in the lower 60s.. |
| Saturday |
Partly cloudy. Lows in the lower 40s. Highs in the lower 60s.. |
| Saturday Night |
Partly cloudy. A slight chance of rain in the evening. Lows around 40. Chance of rain 20 percent. |
| Sunday |
Mostly sunny. Cooler with highs in the lower 50s. |
| Zone Forecast |
St. Charles County |
Forecast from NOAA-NWS for St. Charles County. (Zone forecast)