Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Partly Cloudy

53°F

12°C

Humidity 64%
Wind Speed NW 18 G 30 mph
Barometer 30.16 in (1021.0 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 16 Oct 5:54 am CDT
Extended Forecast for

2 Miles SSW Portage Des Sioux MO

  • Today

    Today: A 20 percent chance of showers after 2pm.  Increasing clouds, with a high near 56. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 33 mph.

    High: 56 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 9 to 18 mph, with gusts as high as 30 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 61. North wind 5 to 7 mph becoming calm  in the afternoon.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Calm wind becoming south 5 to 8 mph in the morning.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 56. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 33 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 9 to 18 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 61. North wind 5 to 7 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 37. Calm wind.
Sunday
Sunny, with a high near 67. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Portage Des Sioux MO
 38.89°N 90.36°W (Elev. 427 ft)
6:11 am CDT Oct 16, 2026
7am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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