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National Weather Service Forecast for: St. Charles County
Issued by: NWS National Weather Service Saint Louis, MO
Updated: 436 AM CDT Fri Sep 17 2021
St. Charles , MO
 
Through
Sunrise

Clear
Clear
Today


Mostly Sunny
Mostly Sunny
Tonight


Partly Cloudy
Partly Cloudy
Saturday


Partly Cloudy
Partly Cloudy
Saturday
Night

Mostly Clear
Mostly Clear
Sunday


Thunder storm
Thunder storm
Sunday
Night

Thunder storm
Thunder storm
Monday


Thunder storm
Thunder storm
Monday
Night

Thunder storm
Thunder storm
n/a Hi ≈85°F Lo ≈65°F Hi ≈85°F Lo ≈65°F Hi ≈85°F Lo ≈65°F Hi ≈85°F Lo ≈65°F

 

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)