Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

A Few Clouds and Windy

20°F

-7°C

Humidity 52%
Wind Speed NW 37 G 48 mph
Barometer 30.08 in (1018.6 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 29 Dec 1:54 am CST
Extended Forecast for

3 Miles SSW Dow IL

Wind Advisory until December 29, 06:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until December 29, 06:00am

    NOW until 6:00am Mon

    Wind Advisory

  • Overnight

    Low: 15 °F

    Mostly Cloudy
    and Breezy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 28. Breezy, with a northwest wind 23 to 28 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 28 °F

    Decreasing
    Clouds and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. West wind 8 to 10 mph.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. West wind around 9 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 15. Breezy, with a west wind around 29 mph, with gusts as high as 43 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 28. Breezy, with a northwest wind 23 to 28 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 38 mph.
Monday Night
Mostly clear, with a low around 17. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 35. West wind 8 to 10 mph.
Tuesday Night
Mostly clear, with a low around 26. West wind around 9 mph.
Wednesday
Partly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 24.
New Year's Day
Mostly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 40.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
9:26 pm CST Dec 28, 2025
2am CST Dec 29, 2025-6pm CST Jan 4, 2026
 
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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