Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

6°F

-14°C

Humidity 73%
Wind Speed W 6 mph
Barometer 30.48 in (1033.1 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 31 Jan 11:54 pm CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Overnight

    Overnight: Mostly clear, with a low around 2. West wind 3 to 5 mph.

    Low: 2 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of snow, mainly after 2pm.  Increasing clouds, with a high near 27. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 27 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow, mainly before 7pm.  Cloudy, then gradually becoming partly cloudy, with a low around 18. South wind around 6 mph becoming west after midnight.

    Low: 18 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 36. West wind 3 to 6 mph.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. Calm wind becoming northeast around 6 mph after midnight.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow.  Mostly cloudy, with a high near 31.

    High: 31 °F

    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 2. West wind 3 to 5 mph.
Sunday
A 40 percent chance of snow, mainly after 2pm. Increasing clouds, with a high near 27. Light southwest wind becoming south 5 to 10 mph in the morning.
Sunday Night
A 40 percent chance of snow, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 18. South wind around 6 mph becoming west after midnight.
Monday
Partly sunny, with a high near 36. West wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 22. Calm wind becoming northeast around 6 mph after midnight.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 12.
Wednesday
Mostly sunny, with a high near 27.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Partly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 27.
Friday
Mostly sunny, with a high near 43.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Carrollton IL
 39.25°N 90.46°W (Elev. 600 ft)
10:57 pm CST Jan 31, 2026
12am CST Feb 1, 2026-6pm CST Feb 7, 2026
 
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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