National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Hazardous Weather This Weekend

A series of cold fronts from North Pacific storms will bring periods of gusty winds, low elevation rainfall, and high elevation snow to the Pacific Northwest this weekend into next week. Heavy to excessive rainfall may produce areas of flooding over southern Texas this weekend. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fog

34°F

1°C

Humidity 97%
Wind Speed Calm
Barometer 30.20 in (1022.8 mb)
Dewpoint 33°F (1°C)
Visibility 0.50 mi
Last update 7 Nov 10:54 pm CST
Extended Forecast for

5 Miles SSW St. Charles County Smartt Airport MO

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, clear, with a low around 35. Calm wind becoming west around 5 mph after midnight.

    Low: 35 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 8am. Otherwise, sunny, with a high near 63. West wind 6 to 9 mph.

    High: 63 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. West wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Areas of fog before 7am. Otherwise, sunny, with a high near 65. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 65 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44. Southwest wind 3 to 5 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 65.

    High: 65 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, clear, with a low around 35. Calm wind becoming west around 5 mph after midnight.
Sunday
Areas of fog before 8am. Otherwise, sunny, with a high near 63. West wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 39. West wind around 6 mph becoming calm in the evening.
Monday
Areas of fog before 7am. Otherwise, sunny, with a high near 65. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Clear, with a low around 44. Southwest wind 3 to 5 mph.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 45.
Veterans Day
A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 65.
Wednesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 55.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 52.
Friday Night
Mostly clear, with a low around 34.
Saturday
Sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW St. Charles County Smartt Airport MO
 38.85°N 90.48°W (Elev. 436 ft)
Last Update:
10:41 pm CST Nov 7, 2026
Forecast Valid:
11pm CST Nov 7, 2026-6pm CST Nov 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation