Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Mostly Cloudy

53°F

12°C

Humidity 80%
Wind Speed Calm
Barometer 30.19 in (1022.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 9 Apr 7:54 am CDT
Extended Forecast for

St. Charles County Smartt Airport MO

  • Today

    Today: Sunny, with a high near 80. Southwest wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 4am.  Partly cloudy, with a low around 57. South wind around 11 mph.

    Low: 57 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 10am.  Mostly cloudy, with a high near 69. Southwest wind 8 to 10 mph becoming north in the afternoon.  Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 48. Northeast wind around 7 mph.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 75. Southeast wind 7 to 10 mph.  Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 80. Breezy.

    High: 80 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 80. Southwest wind 5 to 14 mph, with gusts as high as 21 mph.
Tonight
A 20 percent chance of showers after 4am. Partly cloudy, with a low around 57. South wind around 11 mph.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 69. Southwest wind 8 to 10 mph becoming north in the afternoon. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 48. Northeast wind around 7 mph.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 75. Southeast wind 7 to 10 mph. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 59.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Breezy.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Charles County Smartt Airport MO
 38.94°N 90.45°W (Elev. 427 ft)
8:11 am CDT Apr 9, 2026
8am CDT Apr 9, 2026-6pm CDT Apr 15, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database