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.

A Few Clouds

40°F

4°C

Humidity 73%
Wind Speed NW 20 G 28 mph
Barometer 29.79 in (1008.9 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 14 Jan 5:54 am CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Today

    Today: Scattered flurries between 8am and 11am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 28 by 5pm. Breezy, with a northwest wind 16 to 22 mph, with gusts as high as 36 mph.

    High: 37 °F⇓

    Scattered
    Flurries and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 17. Northwest wind 8 to 15 mph, with gusts as high as 26 mph.

    Low: 17 °F

    Clear

  • Thursday

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

    High: 32 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 27. South wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 27 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 41. West wind 13 to 18 mph, with gusts as high as 31 mph.

    High: 41 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • 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

Detailed Forecast

Today
Scattered flurries between 8am and 11am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 28 by 5pm. Breezy, with a northwest wind 16 to 22 mph, with gusts as high as 36 mph.
Tonight
Clear, with a low around 17. Northwest wind 8 to 15 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 32. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 27. South wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 22 mph.
Friday
Partly sunny, with a high near 41. West wind 13 to 18 mph, with gusts as high as 31 mph.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 24.
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 28.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Carrollton IL
 39.25°N 90.46°W (Elev. 600 ft)
Last Update:
4:21 am CST Jan 14, 2026
Forecast Valid:
6am CST Jan 14, 2026-6pm CST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation