| National Weather Service Forecast for:
St. Charles County Issued by: NWS National Weather Service Saint Louis, MO |
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| Updated: 718 PM CST Sun Jan 25 2026 | ||||||||||||||||||
| St. Charles , MO | ||||||||||||||||||
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| Tonight |
Mostly cloudy this evening, then clearing. Much colder with lows around 7 below. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 22 below. |
| Monday |
Sunny. Highs around 15. West winds 5 to 10 mph with gusts up to 20 mph. Wind chill values as low as 24 below. |
| Monday Night |
Clear. Not as cool with lows around 5 above. Temperature rising to around 13 after midnight. Southwest winds 5 to 10 mph with gusts up to 25 mph. Wind chill values as low as 10 below. |
| Tuesday |
Sunny. Not as cool with highs in the lower 30s. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 1 below in the morning. |
| Tuesday Night |
Mostly clear. Cold with lows around 2 below. Northwest winds around 5 mph. |
| Wednesday |
Partly cloudy. Highs in the upper 20s. |
| Wednesday Night |
Partly cloudy. Wind chill values as low as -10. |
| Thursday |
Mostly cloudy. Highs around 20. |
| Thursday Night |
Mostly cloudy. Wind chill values as low as -10. |
| Friday |
Mostly cloudy. Highs around 20. |
| Friday Night |
Partly cloudy in the evening, then clearing. Cold with lows around zero. |
| Saturday |
Sunny. Highs in the lower 20s. |
| Saturday Night |
Partly cloudy. Cold with lows around 5 above. |
| Sunday |
Partly sunny. Highs around 30. |
| Zone Forecast |
St. Charles County |
Forecast from NOAA-NWS for St. Charles County. (Zone forecast)