Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

28°F

-2°C

Humidity 78%
Wind Speed SW 5 mph
Barometer 30.16 in (1021.6 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 2 Feb 4:54 am CST
Extended Forecast for

St. Charles County Smartt Airport MO

  • Today

    Today: Partly sunny, with a high near 37. West wind around 5 mph becoming calm  in the morning.

    High: 37 °F

    Partly Sunny

  • Tonight

    Tonight: Cloudy, with a low around 23. East wind 3 to 6 mph.

    Low: 23 °F

    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow before 11am.  Mostly cloudy, with a high near 34. Northeast wind 5 to 10 mph becoming north in the afternoon.

    High: 34 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 13. North wind around 6 mph becoming calm  in the evening.

    Low: 13 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30. Calm wind becoming northwest around 6 mph.

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 37. West wind around 5 mph becoming calm in the morning.
Tonight
Cloudy, with a low around 23. East wind 3 to 6 mph.
Tuesday
A 20 percent chance of snow before 11am. Mostly cloudy, with a high near 34. Northeast wind 5 to 10 mph becoming north in the afternoon.
Tuesday Night
Partly cloudy, with a low around 13. North wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 30. Calm wind becoming northwest around 6 mph.
Wednesday Night
Partly cloudy, with a low around 12.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Mostly clear, with a low around 28.
Friday
Mostly sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 18.
Saturday
Sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
St. Charles County Smartt Airport MO
 38.94°N 90.45°W (Elev. 427 ft)
4:46 am CST Feb 2, 2026
5am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database