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.

Mostly Cloudy

28°F

-2°C

Humidity 58%
Wind Speed NW 10 mph
Barometer 30.40 in (1029.8 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 11 Jan 5:54 am CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Today

    Today: Cloudy through mid morning, then clearing, with a high near 37. Northwest wind 7 to 16 mph, with gusts as high as 26 mph.

    High: 37 °F

    Clearing

  • Tonight

    Tonight: Mostly clear, with a low around 26. Southwest wind 5 to 9 mph.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 49. Southwest wind 6 to 10 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. Southwest wind 5 to 9 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

Detailed Forecast

Today
Cloudy through mid morning, then clearing, with a high near 37. Northwest wind 7 to 16 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 26. Southwest wind 5 to 9 mph.
Monday
Mostly sunny, with a high near 49. Southwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 35. Southwest wind 5 to 9 mph.
Tuesday
Partly sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 35.
Thursday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 26.
Friday
Mostly cloudy, with a high near 39.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
Mostly cloudy, with a high near 29.
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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:
4:31 am CST Jan 11, 2026
Forecast Valid:
6am CST Jan 11, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation