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

55°F

13°C

Humidity 69%
Wind Speed SE 9 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 4 Nov 8:54 pm CST
Extended Forecast for

Winfield MO

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 52. Southwest wind 7 to 9 mph.

    Low: 52 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 67. Southwest wind 7 to 15 mph becoming north in the afternoon. Winds could gust as high as 23 mph.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36. North wind around 6 mph becoming light and variable after midnight.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64. Light east wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 23 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 53. Southeast wind 8 to 10 mph becoming southwest after midnight.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 70.

    High: 70 °F

    Slight Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 52. Southwest wind 7 to 9 mph.
Wednesday
Sunny, with a high near 67. Southwest wind 7 to 15 mph becoming north in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 36. North wind around 6 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 64. Light east wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 23 mph.
Thursday Night
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 53. Southeast wind 8 to 10 mph becoming southwest after midnight.
Friday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 42.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 65.
Saturday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Partly cloudy, with a low around 24.
Monday
Sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 25.
Veterans Day
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winfield MO
 38.99°N 90.76°W (Elev. 502 ft)
Last Update:
4:46 pm CST Nov 4, 2025
Forecast Valid:
9pm CST Nov 4, 2025-6pm CST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation