Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

16°F

-9°C

Humidity 59%
Wind Speed N 5 mph
Barometer 30.28 in (1026.1 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 4 Dec 7:54 pm CST
Extended Forecast for

3 Miles SSW Dow IL

  • Tonight

    Tonight: Clear, with a low around 6. Northeast wind around 5 mph becoming calm.

    Low: 6 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 36. South wind 5 to 9 mph.

    High: 36 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 25. South wind 5 to 7 mph becoming west after midnight.

    Low: 25 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 34. Light and variable wind becoming north around 6 mph in the afternoon.

    High: 34 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after midnight.  Mostly cloudy, with a low around 27. East wind around 7 mph.

    Low: 27 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: A chance of rain and snow before noon, then a slight chance of snow.  Mostly cloudy, with a high near 33. Chance of precipitation is 30%.

    High: 33 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 6. Northeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 36. South wind 5 to 9 mph.
Friday Night
Increasing clouds, with a low around 25. South wind 5 to 7 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 34. Light and variable wind becoming north around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 27. East wind around 7 mph.
Sunday
A chance of rain and snow before noon, then a slight chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 12.
Monday
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
7:36 pm CST Dec 4, 2025
8pm CST Dec 4, 2025-6pm CST Dec 11, 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