National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

34°F

1°C

Humidity 89%
Wind Speed NW 5 mph
Barometer 30.17 in (1022.1 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 3 Dec 6:54 pm CST
Extended Forecast for

2 Miles ENE Portage Des Sioux MO

  • Tonight

    Tonight: A chance of snow before 2am, then a chance of flurries between 2am and 4am. Cloudy, with a low around 10. North wind 5 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 10 °F

    Chance Snow
    then Slight
    Chance Snow

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 21. North wind 3 to 8 mph.

    High: 21 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 12. Light and variable wind becoming south around 5 mph after midnight.

    Low: 12 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 37. South wind 3 to 6 mph.

    High: 37 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. South wind around 5 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 24. Chance of precipitation is 20%.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32.

    High: 32 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow before 2am, then a chance of flurries between 2am and 4am. Cloudy, with a low around 10. North wind 5 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 21. North wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 12. Light and variable wind becoming south around 5 mph after midnight.
Friday
Mostly sunny, with a high near 37. South wind 3 to 6 mph.
Friday Night
Mostly cloudy, with a low around 23. South wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 38.
Saturday Night
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 24. Chance of precipitation is 20%.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Mostly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Portage Des Sioux MO
 38.93°N 90.3°W (Elev. 407 ft)
Last Update:
7:21 pm CST Dec 3, 2025
Forecast Valid:
7pm CST Dec 3, 2025-6pm CST Dec 10, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation