Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fog/Mist

35°F

2°C

Humidity 89%
Wind Speed SE 10 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 32°F (0°C)
Visibility 6.00 mi
Wind Chill27°F (-3°C)
Last update 7 Dec 1:54 am CST
Extended Forecast for

3 Miles SSW Dow IL

  • Overnight

    Overnight: A chance of sprinkles and flurries after 5am.  Mostly cloudy, with a low around 34. South wind around 7 mph.

    Low: 34 °F

    Chance
    Sprinkles/Flurries

  • Sunday

    Sunday: A chance of sprinkles and flurries before 10am.  Cloudy, with a high near 37. South wind 5 to 14 mph becoming north in the morning. Winds could gust as high as 24 mph.

    High: 37 °F

    Chance
    Sprinkles/Flurries
    then Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20. North wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 32. North wind around 6 mph becoming light and variable.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. Southeast wind 6 to 11 mph becoming southwest after midnight.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 45.

    High: 45 °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

Overnight
A chance of sprinkles and flurries after 5am. Mostly cloudy, with a low around 34. South wind around 7 mph.
Sunday
A chance of sprinkles and flurries before 10am. Cloudy, with a high near 37. South wind 5 to 14 mph becoming north in the morning. Winds could gust as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around 20. North wind 7 to 13 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 32. North wind around 6 mph becoming light and variable.
Monday Night
Partly cloudy, with a low around 24. Southeast wind 6 to 11 mph becoming southwest after midnight.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 45.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26.
Thursday
A 30 percent chance of snow. Mostly cloudy, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 15.
Friday
Partly sunny, with a high near 23.
Friday Night
Mostly cloudy, with a low around 5.
Saturday
Partly sunny and cold, with a high near 19.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
2:41 am CST Dec 7, 2025
2am CST Dec 7, 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