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

41°F

5°C

Humidity 60%
Wind Speed N 13 mph
Barometer 30.14 in (1020.6 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 10 Feb 10:54 pm CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 28. North wind 7 to 15 mph, with gusts as high as 22 mph.

    Low: 28 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 49. Northwest wind 3 to 7 mph.

    High: 49 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 32. Calm wind.

    Low: 32 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 48. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 48 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 32. Southeast wind around 6 mph.

    Low: 32 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 51.

    High: 51 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 28. North wind 7 to 15 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 49. Northwest wind 3 to 7 mph.
Wednesday Night
Increasing clouds, with a low around 32. Calm wind.
Thursday
Mostly cloudy, with a high near 48. Calm wind becoming southeast 5 to 7 mph in the morning.
Thursday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 32. Southeast wind around 6 mph.
Friday
Mostly sunny, with a high near 52.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 51.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 37.
Sunday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 33.
Washington's Birthday
Sunny, with a high near 57.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 62.
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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:
10:21 pm CST Feb 10, 2026
Forecast Valid:
10pm CST Feb 10, 2026-6pm CST Feb 17, 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