Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

36°F

2°C

Humidity 86%
Wind Speed SE 7 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 6 Dec 10:54 pm CST
Extended Forecast for

2 Miles ENE Portage Des Sioux MO

  • Tonight

    Tonight: A 20 percent chance of rain before 3am.  Cloudy, with a low around 34. Southeast wind 5 to 7 mph.

    Low: 34 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A slight chance of drizzle before noon.  Cloudy, with a high near 37. Light and variable wind becoming north 9 to 14 mph in the morning. Winds could gust as high as 23 mph.

    High: 37 °F

    Slight Chance
    Drizzle then
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17. North wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 17 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 32. North wind around 5 mph becoming calm.

    High: 32 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23. South wind 5 to 9 mph.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight.  Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
A 20 percent chance of rain before 3am. Cloudy, with a low around 34. Southeast wind 5 to 7 mph.
Sunday
A slight chance of drizzle before noon. Cloudy, with a high near 37. Light and variable wind becoming north 9 to 14 mph in the morning. Winds could gust as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 17. North wind 6 to 11 mph, with gusts as high as 21 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 32. North wind around 5 mph becoming calm.
Monday Night
Partly cloudy, with a low around 23. South wind 5 to 9 mph.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26.
Thursday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 37.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
Partly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 7.
Saturday
Mostly sunny, with a high near 22.
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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)
9:46 pm CST Dec 6, 2025
11pm CST Dec 6, 2025-6pm CST Dec 13, 2025
 
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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