Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

37°F

3°C

Humidity 67%
Wind Speed E 5 mph
Barometer 30.15 in (1021.2 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 2 Feb 4:54 pm CST
Extended Forecast for

5 Miles W Dow IL

  • Tonight

    Tonight: A slight chance of freezing rain between 3am and 5am, then a slight chance of snow after 5am.  Mostly cloudy, with a low around 28. Calm wind becoming northeast around 6 mph after midnight.  Chance of precipitation is 20%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance Wintry
    Mix

  • Tuesday

    Tuesday: A 20 percent chance of snow before 9am.  Mostly cloudy, with a high near 33. North wind 6 to 10 mph.

    High: 33 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 15. North wind 3 to 6 mph.

    Low: 15 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29. North wind 3 to 6 mph.

    High: 29 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 15. Light and variable wind.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of freezing rain between 3am and 5am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 28. Calm wind becoming northeast around 6 mph after midnight. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of snow before 9am. Mostly cloudy, with a high near 33. North wind 6 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 15. North wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 29. North wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 15. Light and variable wind.
Thursday
Partly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 32.
Friday
Mostly sunny, with a high near 47.
Friday Night
Mostly clear, with a low around 23.
Saturday
Mostly sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 47.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Dow IL
 39.05°N 90.41°W (Elev. 600 ft)
4:46 pm CST Feb 2, 2026
5pm CST Feb 2, 2026-6pm CST Feb 9, 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