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

64°F

18°C

Humidity 70%
Wind Speed W 16 mph
Barometer 29.72 in (1006.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 7 Nov 8:54 am CST
Extended Forecast for

St. Charles County Smartt Airport MO

  • Today

    Today: Sunny, with a high near 70. West wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 41. West wind 5 to 8 mph becoming calm after midnight.

    Low: 41 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 66. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 66 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 34. South wind 8 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.

    Low: 34 °F

    Chance Rain
    then Mostly
    Cloudy

  • Sunday

    Sunday: A slight chance of rain before noon, then a slight chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm. Mostly sunny, with a high near 42. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 70. West wind 8 to 14 mph, with gusts as high as 22 mph.
Tonight
Increasing clouds, with a low around 41. West wind 5 to 8 mph becoming calm after midnight.
Saturday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 66. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 34. South wind 8 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.
Sunday
A slight chance of rain before noon, then a slight chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm. Mostly sunny, with a high near 42. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 25.
Veterans Day
Partly sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 39.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Mostly sunny, with a high near 62.
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Forecast Area
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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:
9:01 am CST Nov 7, 2025
Forecast Valid:
9am CST Nov 7, 2025-6pm CST Nov 13, 2025
 
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