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National Weather Service Forecast for: St. Charles County
Issued by: NWS National Weather Service Saint Louis, MO
Updated: 336 AM CDT Sun Apr 18 2021
St. Charles , MO
 
Through
Sunrise

Mostly Clear
Mostly Clear
Today


Thunder storm
Thunder storm
Tonight


Mostly Clear
Mostly Clear
Monday


Sunny
Sunny
Monday
Night

Partly Cloudy
Partly Cloudy
Tuesday


Chance rain
Chance rain
Tuesday
Night

Showers likely
Showers likely
Wednesday


Partly Cloudy
Partly Cloudy
Wednesday
Night

Mostly Clear
Mostly Clear
n/a Hi ≈65°F Lo ≈35°F Hi ≈65°F Lo ≈40°F Hi ≈45°F Lo ≈30°F Hi ≈55°F Lo ≈35°F

 

Through Sunrise
 
Mostly clear. Temperature falling to the lower 40s. Light wind.
Today
 
Partly sunny in the morning, then mostly cloudy with showers likely and slight chance of thunderstorms in the afternoon. High in the mid 60s. West wind around 10 mph. Chance of rain 60 percent.
Tonight
 
Mostly clear. A 20 percent chance of showers in the evening. Low in the upper 30s to mid 40s. West wind around 10 mph in the evening becoming light after midnight.
Monday
 
Sunny. High in the mid 60s to lower 70s. Southwest wind 10 to 15 mph.
Monday Night
 
Partly cloudy. Low around 40. North wind around 10 mph.
Tuesday
 
Cooler. Mostly cloudy. Chance of showers in the morning, then showers in the afternoon. High in the upper 40s to upper 50s. Temperature falling into the 40s in the afternoon. North wind 10 to 15 mph. Gusts up to 25 mph in the afternoon. Chance of rain 80 percent.
Tuesday Night
 
Colder. Mostly cloudy with rain showers likely, possibly mixed with snow showers in the evening, then mostly clear after midnight. Widespread frost after midnight. Little or no snow accumulation. Low around 30. Chance of precipitation 60 percent.
Wednesday
 
Partly cloudy. Widespread frost in the morning. High in the lower 50s.
Wednesday Night
 
Mostly clear. Areas of frost. Low in the mid 30s.
Thursday
 
Sunny. Areas of frost. High around 60.
Thursday Night
 
Partly cloudy with a 20 percent chance of showers. Low in the lower 40s.
Friday
 
Mostly cloudy with a 50 percent chance of showers. High around 60.
Friday Night
 
Showers likely. Low in the upper 40s. Chance of rain 60 percent.
Saturday
 
Partly sunny with a 30 percent chance of showers. High in the lower 60s.

 

Forecast from NOAA-NWS for St. Charles County. (Zone forecast)