Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fog/Mist

34°F

1°C

Humidity 92%
Wind Speed E 5 mph
Barometer 29.93 in (1013.9 mb)
Dewpoint 32°F (0°C)
Visibility 5.00 mi
Wind Chill29°F (-2°C)
Last update 7 Dec 5:54 am CST
Extended Forecast for

Dow IL

  • Today

    Today: A chance of sprinkles and flurries before 9am.  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 24 mph.

    High: 37 °F

    Chance
    Sprinkles/Flurries
    then Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. North wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 32. North wind around 6 mph becoming calm.

    High: 32 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. South wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48. Southwest wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 48 °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 44.

    High: 44 °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

  • Thursday

    Thursday: A 30 percent chance of snow.  Mostly cloudy, with a high near 34.

    High: 34 °F

    Chance Snow

Detailed Forecast

Today
A chance of sprinkles and flurries before 9am. 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 24 mph.
Tonight
Mostly cloudy, with a low around 20. North wind 7 to 13 mph, with gusts as high as 22 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 32. North wind around 6 mph becoming calm.
Monday Night
Partly cloudy, with a low around 24. South wind 5 to 11 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 48. Southwest wind 11 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 44.
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 34.
Thursday Night
Mostly cloudy, with a low around 15.
Friday
Partly sunny, with a high near 22.
Friday Night
Mostly cloudy, with a low around 4.
Saturday
Partly sunny and cold, with a high near 19.
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ABOUT THIS FORECAST

 
Point Forecast:
Dow IL
 39.04°N 90.33°W (Elev. 623 ft)
5:01 am CST Dec 7, 2025
6am 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