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.

Overcast with Haze

34°F

1°C

Humidity 82%
Wind Speed N 16 G 23 mph
Barometer 30.14 in (1020.8 mb)
Dewpoint 29°F (-2°C)
Visibility 6.00 mi
Wind Chill24°F (-4°C)
Last update 7 Dec 1:54 pm CST
Extended Forecast for

3 Miles WNW Carrollton IL

  • This Afternoon

    This Afternoon: Cloudy, with a steady temperature around 31. North wind around 14 mph, with gusts as high as 23 mph.

    High: 31 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 17. North wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 17 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 30. Light and variable wind.

    High: 30 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a temperature rising to around 31 by 2am. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 26 °F⇑

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. Southwest wind around 11 mph, with gusts as high as 20 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Thursday

    Thursday: A 30 percent chance of snow. Mostly cloudy, with a high near 33.

    High: 33 °F

    Chance Snow

Detailed Forecast

This Afternoon
Cloudy, with a steady temperature around 31. North wind around 14 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, with a low around 17. North wind 5 to 11 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 30. Light and variable wind.
Monday Night
Partly cloudy, with a temperature rising to around 31 by 2am. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 47. Southwest wind around 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 25.
Thursday
A 30 percent chance of snow. Mostly cloudy, with a high near 33.
Thursday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 13.
Friday
Mostly sunny, with a high near 22.
Friday Night
Mostly cloudy, with a low around 3.
Saturday
Partly sunny and cold, with a high near 17.
Basemap Options
Click map to change the forecast location
Loading map...
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:
11:06 am CST Dec 7, 2025
Forecast Valid:
2pm CST Dec 7, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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