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

64°F

18°C

Humidity 87%
Wind Speed S 14 mph
Barometer 29.48 in (998.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 8 Jan 6:54 pm CST
Extended Forecast for

3 Miles WSW Winfield MO

  • Tonight

    Tonight: A 50 percent chance of rain and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 44. South wind 14 to 17 mph becoming west after midnight. Winds could gust as high as 31 mph.

    Low: 44 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 50. West wind 9 to 14 mph becoming light and variable in the afternoon. Winds could gust as high as 25 mph.

    High: 50 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 36. Calm wind becoming northwest around 6 mph after midnight.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 45. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 45 °F

    Slight Chance
    Rain then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23. Northwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 23 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of rain and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 44. South wind 14 to 17 mph becoming west after midnight. Winds could gust as high as 31 mph.
Friday
Mostly cloudy, with a high near 50. West wind 9 to 14 mph becoming light and variable in the afternoon. Winds could gust as high as 25 mph.
Friday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 36. Calm wind becoming northwest around 6 mph after midnight.
Saturday
A 20 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 45. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 23. Northwest wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 24.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Partly sunny, with a high near 53.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 41.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 37.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Winfield MO
 38.99°N 90.79°W (Elev. 499 ft)
Last Update:
3:57 pm CST Jan 8, 2026
Forecast Valid:
7pm CST Jan 8, 2026-6pm CST Jan 15, 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