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.

Light Snow and Breezy

22°F

-6°C

Humidity 66%
Wind Speed W 25 G 40 mph
Barometer 29.99 in (1015.9 mb)
Dewpoint 12°F (-11°C)
Visibility 9.00 mi
Wind Chill5°F (-15°C)
Last update 16 Mar 11:54 am CDT
Extended Forecast for

5 Miles W Dow IL

  • This Afternoon

    This Afternoon: A chance of flurries. Mostly cloudy, with a high near 28. Breezy, with a northwest wind 21 to 24 mph, with gusts as high as 37 mph.

    High: 28 °F

    Chance
    Flurries and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 13. Northwest wind 13 to 17 mph, with gusts as high as 26 mph.

    Low: 13 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 34. Northwest wind 6 to 9 mph becoming south in the afternoon.

    High: 34 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow before 2am, then a chance of rain and snow between 2am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 29. Southeast wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 29 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62. South wind 8 to 10 mph becoming west in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of flurries. Mostly cloudy, with a high near 28. Breezy, with a northwest wind 21 to 24 mph, with gusts as high as 37 mph.
Tonight
Mostly cloudy, with a low around 13. Northwest wind 13 to 17 mph, with gusts as high as 26 mph.
Tuesday
Increasing clouds, with a high near 34. Northwest wind 6 to 9 mph becoming south in the afternoon.
Tuesday Night
A chance of snow before 2am, then a chance of rain and snow between 2am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 29. Southeast wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Wednesday
Mostly sunny, with a high near 62. South wind 8 to 10 mph becoming west in the afternoon.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Dow IL
 39.05°N 90.41°W (Elev. 600 ft)
Last Update:
12:11 pm CDT Mar 16, 2026
Forecast Valid:
12pm CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation