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

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

27°F

-3°C

Humidity 46%
Wind Speed NW 16 mph
Barometer 30.13 in (1020.4 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 14 Jan 8:54 pm CST
Extended Forecast for

3 Miles WNW Carrollton IL

  • Tonight

    Tonight: Clear, with a low around 16. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 16 °F

    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 32. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 32 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Snow likely, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 27. South wind 7 to 11 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Snow Likely
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 41. West wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 41 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 17. West wind around 14 mph, with gusts as high as 23 mph.

    Low: 17 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 21.

    High: 21 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 16. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Thursday
Increasing clouds, with a high near 32. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
Snow likely, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 27. South wind 7 to 11 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Partly sunny, with a high near 41. West wind 11 to 18 mph, with gusts as high as 29 mph.
Friday Night
A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 17. West wind around 14 mph, with gusts as high as 23 mph.
Saturday
Mostly cloudy, with a high near 21.
Saturday Night
Partly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Partly cloudy, with a low around 12.
M.L.King Day
Mostly sunny, with a high near 23.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Mostly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Carrollton IL
 39.29°N 90.46°W (Elev. 607 ft)
Last Update:
9:31 pm CST Jan 14, 2026
Forecast Valid:
10pm CST Jan 14, 2026-6pm CST Jan 21, 2026
 
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Additional Resources

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Chance of Precipitation