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.

Overcast

23°F

-5°C

Humidity 81%
Wind Speed E 6 mph
Barometer 30.42 in (1030.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 1 Dec 6:54 am CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Today

    Today: Snow, mainly after 11am. High near 27. Light and variable wind. Chance of precipitation is 80%. Total daytime snow accumulation of less than one inch possible.

    High: 27 °F

    Chance Snow
    then Snow

  • Tonight

    Tonight: Snow, mainly before 10pm. Low around 16. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 16 °F

    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 28. Northwest wind 5 to 7 mph becoming south in the afternoon.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 19. South wind around 6 mph.

    Low: 19 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 36. South wind around 7 mph becoming northwest in the afternoon.

    High: 36 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow. Mostly cloudy, with a high near 32.

    High: 32 °F

    Chance Snow

Detailed Forecast

Today
Snow, mainly after 11am. High near 27. Light and variable wind. Chance of precipitation is 80%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow, mainly before 10pm. Low around 16. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Partly sunny, with a high near 28. Northwest wind 5 to 7 mph becoming south in the afternoon.
Tuesday Night
Partly cloudy, with a low around 19. South wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 36. South wind around 7 mph becoming northwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 9.
Thursday
Mostly sunny and cold, with a high near 18.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 6.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 32.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 21.
Saturday
Partly sunny, with a high near 35.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly cloudy, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Carrollton IL
 39.25°N 90.46°W (Elev. 600 ft)
Last Update:
4:36 am CST Dec 1, 2025
Forecast Valid:
7am CST Dec 1, 2025-6pm CST Dec 7, 2025
 
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