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Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

52°F

11°C

Humidity 93%
Wind Speed E 13 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 50°F (10°C)
Visibility 9.00 mi
Wind Chill48°F (9°C)
Last update 1 Apr 8:54 pm CDT
Extended Forecast for

St. Charles County Smartt Airport MO

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Cloudy, with a temperature rising to around 60 by 5am. East wind around 11 mph becoming southeast after midnight. Chance of precipitation is 60%.

    Low: 54 °F⇑

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 9am, then a chance of showers between 9am and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. Breezy, with a south wind 16 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 50%.

    High: 78 °F

    Breezy.
    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 60. South wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.

    Low: 60 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 83. South wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 52. South wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 52 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

    High: 63 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before midnight. Cloudy, with a temperature rising to around 60 by 5am. East wind around 11 mph becoming southeast after midnight. Chance of precipitation is 60%.
Thursday
A slight chance of showers and thunderstorms before 9am, then a chance of showers between 9am and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. Breezy, with a south wind 16 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 60. South wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 83. South wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Friday Night
Showers and possibly a thunderstorm. Low around 52. South wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Sunny, with a high near 60.
Sunday Night
Clear, with a low around 36.
Monday
Sunny, with a high near 65.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Charles County Smartt Airport MO
 38.94°N 90.45°W (Elev. 427 ft)
Last Update:
7:31 pm CDT Apr 1, 2026
Forecast Valid:
9pm CDT Apr 1, 2026-6pm CDT Apr 8, 2026
 
Forecast Discussion
 
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Additional Resources

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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