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

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

63°F

17°C

Humidity 70%
Wind Speed S 7 mph
Barometer 29.86 in (1011.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 14 Nov 8:54 pm CST
Extended Forecast for

3 Miles WNW Winfield MO

  • Tonight

    Tonight: Partly cloudy, with a low around 60. Southwest wind around 8 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. North wind 5 to 8 mph.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58. North wind 3 to 5 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of rain after noon. Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Tuesday

    Tuesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 60. Southwest wind around 8 mph.
Saturday
Mostly sunny, with a high near 77. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Mostly clear, with a low around 42. North wind 5 to 8 mph.
Sunday
Sunny, with a high near 58. North wind 3 to 5 mph.
Sunday Night
Mostly clear, with a low around 37. Light and variable wind.
Monday
A 40 percent chance of rain after noon. Mostly sunny, with a high near 56.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 57.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 46.
Thursday
Rain likely. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Winfield MO
 39.01°N 90.81°W (Elev. 600 ft)
Last Update:
8:51 pm CST Nov 14, 2025
Forecast Valid:
9pm CST Nov 14, 2025-6pm CST Nov 21, 2025
 
Forecast Discussion
 
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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