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Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Light Rain and Breezy

38°F

3°C

Humidity 86%
Wind Speed W 22 G 37 mph
Barometer 29.57 in (1001.1 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 15 Mar 7:54 pm CDT
Extended Forecast for

4 Miles E Portage Des Sioux MO

Wind Advisory March 15, 08:41pm until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 15, 08:41pm until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Tonight

    Low: 21 °F

    Rain/Snow and
    Breezy then
    Chance Snow
    and Blustery

  • Monday

    Monday: A chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 28. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 43 mph. Chance of precipitation is 30%.

    High: 28 °F

    Blustery.
    Chance Snow
    then
    Scattered
    Flurries

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Northwest wind 10 to 18 mph, with gusts as high as 26 mph.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Northwest wind 6 to 8 mph becoming southwest in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a steady temperature around 34. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Tonight
Rain before 9pm, then rain and snow between 9pm and 11pm, then a chance of snow after 11pm. Low around 21. Blustery, with a west wind 24 to 26 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
Monday
A chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 28. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 43 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 13. Northwest wind 10 to 18 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 35. Northwest wind 6 to 8 mph becoming southwest in the afternoon.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a steady temperature around 34. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Portage Des Sioux MO
 38.93°N 90.27°W (Elev. 407 ft)
Last Update:
7:30 pm CDT Mar 15, 2026
Forecast Valid:
8pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation