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

29°F

-2°C

Humidity 51%
Wind Speed NW 9 mph
Barometer 30.07 in (1018.8 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 18 Jan 11:54 pm CST
Extended Forecast for

3 Miles WNW Carrollton IL

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

  • Overnight

    Overnight: Partly cloudy, with a low around 7. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 38 mph.

    Low: 7 °F

    Partly Cloudy
    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. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 18 °F

    Sunny and
    Blustery then
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 11. West wind around 6 mph becoming south after midnight.

    Low: 11 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32. Southwest wind 6 to 9 mph.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26. Southeast wind 6 to 13 mph becoming southwest after midnight. Winds could gust as high as 23 mph.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 7. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 38 mph.
M.L.King Day
Sunny and cold, with a high near 18. Wind chill values as low as -10. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 31 mph.
Monday Night
Increasing clouds, with a low around 11. West wind around 6 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 32. Southwest wind 6 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 26. Southeast wind 6 to 13 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
Sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 19.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 33.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 11.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 21.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 2.
Sunday
A 20 percent chance of snow. Partly sunny and cold, with a high near 17.
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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:
9:36 pm CST Jan 18, 2026
Forecast Valid:
12am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation