Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair and Breezy

14°F

-10°C

Humidity 47%
Wind Speed W 21 G 26 mph
Barometer 30.39 in (1029.6 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 19 Jan 8:54 am CST
Extended Forecast for

3 Miles SSW Dow IL

Cold Weather Advisory January 19, 09:14am until January 19, 10:00am
Click here for hazard details and duration
...
  •  
    Cold Weather Advisory January 19, 09:14am until January 19, 10:00am

    NOW until 10:00am Mon

    Cold Weather Advisory

  • M.L.King Day

    High: 20 °F

    Mostly Sunny
    and Blustery
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 12. West wind around 6 mph becoming light and variable.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 36. South wind 5 to 10 mph.

    High: 36 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 27. South wind 9 to 14 mph becoming southwest after midnight. Winds could gust as high as 23 mph.

    Low: 27 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 43. West wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 43 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

M.L.King Day
Sunny and cold, with a high near 20. Blustery, with a west wind 16 to 21 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 29 mph.
Tonight
Mostly clear, with a low around 12. West wind around 6 mph becoming light and variable.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 36. South wind 5 to 10 mph.
Tuesday Night
Increasing clouds, with a low around 27. South wind 9 to 14 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Wednesday
Sunny, with a high near 43. West wind 8 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 22.
Thursday
Sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 16.
Friday
Mostly cloudy, with a high near 23.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 0.
Saturday
A 20 percent chance of snow. Partly sunny and cold, with a high near 13.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 24.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
7:47 am CST Jan 19, 2026
9am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database