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

62°F

17°C

Humidity 58%
Wind Speed W 10 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 10 Feb 10:54 am CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Today

    Today: Sunny, with a high near 55. North wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 55 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. North wind 7 to 10 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 49. Northwest wind 5 to 8 mph.

    High: 49 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Cloudy, with a high near 47. Southeast wind 5 to 8 mph.

    High: 47 °F

    Cloudy then
    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 55. North wind 10 to 14 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 28. North wind 7 to 10 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 49. Northwest wind 5 to 8 mph.
Wednesday Night
Increasing clouds, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of rain after noon. Cloudy, with a high near 47. Southeast wind 5 to 8 mph.
Thursday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 49.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
A 40 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 47.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Sunday
A 40 percent chance of rain. Mostly sunny, with a high near 51.
Sunday Night
Mostly clear, with a low around 31.
Washington's Birthday
Mostly sunny, with a high near 56.
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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:
10:51 am CST Feb 10, 2026
Forecast Valid:
11am CST Feb 10, 2026-6pm CST Feb 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation