Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

42°F

6°C

Humidity 89%
Wind Speed SE 7 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 9 Mar 7:54 am CDT
Extended Forecast for

St. Charles County Smartt Airport MO

  • Today

    Today: Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 56. South wind 8 to 10 mph.

    Low: 56 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 83. South wind 7 to 15 mph, with gusts as high as 23 mph.  Chance of precipitation is 40%.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm.  Low around 52. South wind around 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%.

    Low: 52 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm.  Temperature rising to near 59 by 10am, then falling to around 49 during the remainder of the day. Breezy, with a southwest wind 14 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.  Chance of precipitation is 100%.

    High: 59 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 56. South wind 8 to 10 mph.
Tuesday
A slight chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 83. South wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 52. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 59 by 10am, then falling to around 49 during the remainder of the day. Breezy, with a southwest wind 14 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 63.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 66.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 45.
Sunday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Charles County Smartt Airport MO
 38.94°N 90.45°W (Elev. 427 ft)
6:51 am CDT Mar 9, 2026
8am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
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