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

62°F

17°C

Humidity 93%
Wind Speed Calm
Barometer 30.12 in (1019.5 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 23 Jun 12:54 am CDT
Extended Forecast for

4 Miles WSW Foley MO

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 59. Light north wind.

    Low: 59 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 80. Calm wind.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62. Light east wind.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 81. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely then
    T-storms
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 59. Light north wind.
Tuesday
Patchy fog before 8am. Otherwise, sunny, with a high near 80. Calm wind.
Tuesday Night
Partly cloudy, with a low around 62. Light east wind.
Wednesday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 81. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Foley MO
 39.01°N 90.81°W (Elev. 600 ft)
Last Update:
11:41 pm CDT Jun 22, 2026
Forecast Valid:
1am CDT Jun 23, 2026-6pm CDT Jun 29, 2026
 
Forecast Discussion
 
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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