Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

4 Miles SSW Portage Des Sioux MO

  • Today

    Today: Mostly sunny, with a high near 59. West wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 59 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 35. West wind 5 to 8 mph becoming calm  after midnight.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. Calm wind becoming south 5 to 8 mph in the morning.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after midnight.  Increasing clouds, with a low around 45. South wind around 8 mph.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain.  High near 62. Southeast wind 8 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%.

    High: 62 °F

    Rain

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly before midnight.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain
    then Slight
    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain.  Mostly cloudy, with a high near 55.

    High: 55 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly before midnight.  Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 59. West wind 8 to 13 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 35. West wind 5 to 8 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 58. Calm wind becoming south 5 to 8 mph in the morning.
Wednesday Night
A 30 percent chance of rain after midnight. Increasing clouds, with a low around 45. South wind around 8 mph.
Thursday
Rain. High near 62. Southeast wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Thursday Night
A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 45.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 55.
Friday Night
A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 34.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 27.
Monday
Sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Portage Des Sioux MO
 38.87°N 90.36°W (Elev. 430 ft)
4:51 am CST Jan 6, 2026
5am CST Jan 6, 2026-6pm CST Jan 12, 2026
 
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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