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

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Partly Cloudy

81°F

27°C

Humidity 62%
Wind Speed Calm
Barometer 30.19 in (1021.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 5 Aug 12:54 pm CDT
Extended Forecast for

Winfield MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. Light northeast wind.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Light east wind.

    Low: 66 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Light southeast wind.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. Southeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. Light northeast wind.
Tonight
Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Light east wind.
Wednesday
Mostly sunny, with a high near 88. Light southeast wind.
Wednesday Night
Mostly clear, with a low around 68. Southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 72.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Winfield MO
 38.99°N 90.76°W (Elev. 502 ft)
Last Update:
11:51 am CDT Aug 5, 2025
Forecast Valid:
1pm CDT Aug 5, 2025-6pm CDT Aug 11, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation