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

24°F

-4°C

Humidity 50%
Wind Speed W 8 mph
Barometer 29.94 in (1014.3 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 17 Jan 12:54 am CST
Extended Forecast for

3 Miles SSW Dow IL

  • Overnight

    Overnight: A 20 percent chance of snow before 3am. Partly cloudy, with a low around 19. West wind around 14 mph, with gusts as high as 26 mph.

    Low: 19 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 25. West wind 13 to 18 mph, with gusts as high as 25 mph.

    High: 25 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 11. West wind 8 to 15 mph.

    Low: 11 °F

    Gradual
    Clearing

  • Sunday

    Sunday: Increasing clouds, with a high near 32. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 32 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 12. Northwest wind 10 to 17 mph, with gusts as high as 25 mph.

    Low: 12 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow before 3am. Partly cloudy, with a low around 19. West wind around 14 mph, with gusts as high as 26 mph.
Saturday
Partly sunny, with a high near 25. West wind 13 to 18 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 11. West wind 8 to 15 mph.
Sunday
Increasing clouds, with a high near 32. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 12. Northwest wind 10 to 17 mph, with gusts as high as 25 mph.
M.L.King Day
Sunny, with a high near 21.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 35. Chance of precipitation is 20%.
Thursday Night
A slight chance of snow and freezing rain. Partly cloudy, with a low around 22. Chance of precipitation is 20%.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 38.
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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:
9:56 pm CST Jan 16, 2026
Forecast Valid:
1am CST Jan 17, 2026-6pm CST Jan 23, 2026
 
Forecast Discussion
 
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