| National Weather Service Forecast for:
St. Charles County Issued by: NWS National Weather Service Saint Louis, MO |
||||||||||||||
| Updated: 127 AM CDT Sun Jul 12 2026 | ||||||||||||||
| St. Charles , MO | ||||||||||||||
|
| Rest Of Tonight |
Mostly clear. Near steady temperature around 70. North winds around 5 mph. |
| Sunday |
Sunny. Highs in the mid 80s. Northeast winds 5 to 10 mph. |
| Sunday Night |
Clear. Lows in the upper 60s. North winds 5 to 10 mph. |
| Monday |
Sunny. Highs in the upper 80s. Northeast winds 5 to 10 mph. |
| Monday Night |
Clear. Lows in the upper 60s. Northeast winds 5 to 10 mph in the evening, becoming light and variable. |
| Tuesday |
Mostly clear. Highs in the lower 90s. |
| Tuesday Night |
Mostly clear. Lows in the lower 70s. |
| Wednesday |
Mostly clear. Highs in the lower 90s. |
| Wednesday Night |
Mostly clear. Lows in the lower 70s. |
| Thursday |
Mostly clear. Highs in the lower 90s. |
| Thursday Night |
Mostly clear. Lows in the lower 70s. |
| Friday |
Mostly clear. Highs in the lower 90s. |
| Friday Night |
Mostly clear. Lows in the lower 70s. |
| Saturday |
Mostly clear. Highs in the lower 90s. |
| Zone Forecast |
St. Charles County |
Forecast from NOAA-NWS for St. Charles County. (Zone forecast)