| National Weather Service Forecast for:
St. Charles County Issued by: NWS National Weather Service Saint Louis, MO |
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| Updated: 436 AM CDT Fri Sep 17 2021 | ||||||||||||||||||
| St. Charles , MO | ||||||||||||||||||
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| Through Sunrise |
Clear. Temperature falling to the lower 60s. Light wind. |
| Today |
Mostly sunny. High in the mid to upper 80s. Light wind. |
| Tonight |
Partly cloudy. Low in the mid 60s to lower 70s. Light wind. |
| Saturday |
Partly cloudy. High in the upper 80s. Light wind in the morning becoming northeast around 10 mph in the afternoon. |
| Saturday Night |
Mostly clear. Low in the lower 60s to lower 70s. Light wind. |
| Sunday |
Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. High in the mid 80s. Light wind in the morning becoming southeast around 10 mph in the afternoon. |
| Sunday Night |
Partly cloudy. Slight chance of showers and thunderstorms in the evening, then slight chance of showers after midnight. Low in the upper 60s. Chance of rain 20 percent. |
| Monday |
Partly cloudy with chance of showers and slight chance of thunderstorms. High in the lower 80s. Temperature steady or slowly falling in the afternoon. Chance of rain 40 percent. |
| Monday Night |
Mostly clear with chance of showers and slight chance of thunderstorms. Low in the upper 60s. Temperature rising through the 60s by midnight, then near steady overnight. Chance of rain 30 percent. |
| Tuesday |
Mostly cloudy with showers likely and slight chance of thunderstorms. High around 80. Temperature falling through the 70s by midday, then near steady in the afternoon. Chance of rain 60 percent. |
| Tuesday Night |
Cooler. Partly cloudy with a 40 percent chance of showers. Low in the mid 50s. |
| Wednesday |
Mostly sunny. High in the lower 70s. |
| Wednesday Night |
Clear. Low around 50. |
| Thursday |
Clear. High in the mid 70s. |
Forecast from NOAA-NWS for St. Charles County. (Zone forecast)