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

61°F

16°C

Humidity 35%
Wind Speed NW 13 G 23 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 6 May 2:54 pm CDT
Extended Forecast for

Winfield MO

  • Tonight

    Tonight: Increasing clouds, with a low around 41. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 41 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 67. Light southwest wind increasing to 10 to 15 mph in the morning.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. Southwest wind 5 to 9 mph.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Southwest wind 5 to 8 mph. Chance of precipitation is 70%.

    High: 73 °F

    Partly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Mostly cloudy, with a low around 49. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 72.

    High: 72 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 41. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 67. Light southwest wind increasing to 10 to 15 mph in the morning.
Thursday Night
Mostly clear, with a low around 48. Southwest wind 5 to 9 mph.
Friday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Southwest wind 5 to 8 mph. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Mostly cloudy, with a low around 49. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.
Saturday
Sunny, with a high near 80.
Saturday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 73.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 52.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winfield MO
 38.99°N 90.73°W (Elev. 433 ft)
Last Update:
2:41 pm CDT May 6, 2026
Forecast Valid:
3pm CDT May 6, 2026-6pm CDT May 13, 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