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.

Fair

43°F

6°C

Humidity 58%
Wind Speed E 5 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 25 Mar 4:54 am CDT
Extended Forecast for

3 Miles WSW Winfield MO

  • Today

    Today: Mostly sunny, with a high near 79. Light southeast wind becoming south 5 to 9 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. South wind 6 to 10 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of rain after 1pm. Increasing clouds, with a high near 90. Southwest wind 10 to 13 mph, with gusts as high as 28 mph.

    High: 90 °F

    Sunny then
    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 4am, then rain after 4am. Low around 42. West wind 8 to 16 mph becoming north after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%.

    Low: 42 °F

    Showers

  • Friday

    Friday: Rain, mainly before 7am. High near 52. North wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 52 °F

    Rain then
    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 79. Light southeast wind becoming south 5 to 9 mph in the morning.
Tonight
Mostly clear, with a low around 64. South wind 6 to 10 mph, with gusts as high as 22 mph.
Thursday
A 20 percent chance of rain after 1pm. Increasing clouds, with a high near 90. Southwest wind 10 to 13 mph, with gusts as high as 28 mph.
Thursday Night
Showers and possibly a thunderstorm before 4am, then rain after 4am. Low around 42. West wind 8 to 16 mph becoming north after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%.
Friday
Rain, mainly before 7am. High near 52. North wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 65.
Sunday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 53.
Monday
A 20 percent chance of rain and thunderstorms. Mostly sunny, with a high near 82.
Monday Night
A 30 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 60.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Winfield MO
 38.99°N 90.79°W (Elev. 499 ft)
Last Update:
3:51 am CDT Mar 25, 2026
Forecast Valid:
5am CDT Mar 25, 2026-6pm CDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation