National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

17°F

-8°C

Humidity 41%
Wind Speed NW 16 G 24 mph
Barometer 30.46 in (1032.0 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 19 Jan 10:54 am CST
Extended Forecast for

3 Miles SSW Dow IL

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 18. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 18 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around 12. West wind around 6 mph becoming south after midnight.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. South wind 5 to 11 mph.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 30. South wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 30 °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

  • Friday

    Friday: Mostly cloudy, with a high near 23.

    High: 23 °F

    Mostly Cloudy

Detailed Forecast

M.L.King Day
Sunny and cold, with a high near 18. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 12. West wind around 6 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 36. South wind 5 to 11 mph.
Tuesday Night
Increasing clouds, with a low around 30. South wind 10 to 15 mph, with gusts as high as 26 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.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
Last Update:
1:26 pm CST Jan 19, 2026
Forecast Valid:
1pm CST Jan 19, 2026-6pm CST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation