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.

Mostly Cloudy

13°F

-11°C

Humidity 67%
Wind Speed W 8 mph
Barometer 30.19 in (1022.9 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 18 Jan 4:54 am CST
Extended Forecast for

4 Miles SW Carrollton IL

Cold Weather Advisory January 19, 03:00am until January 19, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Today

    Today: A chance of flurries after 5pm. Increasing clouds, with a high near 29. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 29 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 7. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 36 mph.

    Low: 7 °F

    Chance
    Flurries and
    Blustery

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 8 to 18 mph, with gusts as high as 30 mph.

    High: 18 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 10. Southwest wind 5 to 7 mph.

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. South wind 7 to 10 mph.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a steady temperature around 31.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of flurries after 5pm. Increasing clouds, with a high near 29. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Tonight
A chance of flurries before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 7. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 36 mph.
M.L.King Day
Sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 8 to 18 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 10. Southwest wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 35. South wind 7 to 10 mph.
Tuesday Night
Mostly cloudy, with a steady temperature around 31.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
A 20 percent chance of snow after midnight. Partly cloudy, with a low around 24.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 40.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 24.
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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:
5:06 am CST Jan 18, 2026
Forecast Valid:
5am CST Jan 18, 2026-6pm CST Jan 24, 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