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.

Overcast and Breezy

34°F

1°C

Humidity 76%
Wind Speed NW 23 G 44 mph
Barometer 29.63 in (1003.2 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 15 Mar 11:54 pm CDT
Extended Forecast for

3 Miles SSW Dow IL

Wind Advisory March 16, 12:52am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 12:52am until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Overnight

    Low: 20 °F

    Chance Snow
    and Blustery

  • Monday

    Monday: A 30 percent chance of snow, mainly before 11am. Cloudy, with a high near 27. Blustery, with a northwest wind 23 to 28 mph, with gusts as high as 39 mph.

    High: 27 °F

    Blustery.
    Chance Snow
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 28 mph.

    Low: 13 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Northwest wind 6 to 10 mph becoming south in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 29 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Overnight
A 50 percent chance of snow, mainly before 3am. Cloudy, with a low around 20. Blustery, with a northwest wind 25 to 28 mph, with gusts as high as 38 mph.
Monday
A 30 percent chance of snow, mainly before 11am. Cloudy, with a high near 27. Blustery, with a northwest wind 23 to 28 mph, with gusts as high as 39 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 35. Northwest wind 6 to 10 mph becoming south in the afternoon.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Mostly sunny, with a high near 72.
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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:
12:11 am CDT Mar 16, 2026
Forecast Valid:
12am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation