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

50°F

10°C

Humidity 32%
Wind Speed NE 5 mph
Barometer 30.29 in (1025.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 11 Feb 3:54 pm CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Tonight

    Tonight: Increasing clouds, with a low around 31. Calm wind.

    Low: 31 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 50. Calm wind becoming south around 6 mph in the morning.

    High: 50 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 30. Southeast wind around 6 mph.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 56. South wind 5 to 7 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35. South wind 3 to 5 mph.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 52.

    High: 52 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 56.

    High: 56 °F

    Slight Chance
    Rain then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 31. Calm wind.
Thursday
Mostly cloudy, with a high near 50. Calm wind becoming south around 6 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 30. Southeast wind around 6 mph.
Friday
Sunny, with a high near 56. South wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 35. South wind 3 to 5 mph.
Saturday
A 40 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 52.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 39.
Sunday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 35.
Washington's Birthday
Mostly sunny, with a high near 60.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly cloudy, with a high near 64.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 50.
Wednesday
A 20 percent chance of rain. Sunny, with a high near 66.
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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:
4:16 pm CST Feb 11, 2026
Forecast Valid:
4pm CST Feb 11, 2026-6pm CST Feb 18, 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