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

61°F

16°C

Humidity 84%
Wind Speed E 5 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 16 Oct 6:54 am CDT
Extended Forecast for

Carrollton IL

  • Today

    Today: Sunny, with a high near 82. Southeast wind 6 to 9 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Southeast wind 7 to 9 mph.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 82. South wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 82 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 63. South wind around 10 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 77. Southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 77 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 47. Chance of precipitation is 80%.

    Low: 47 °F

    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Sunny, with a high near 64.

    High: 64 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. Southeast wind 6 to 9 mph.
Tonight
Partly cloudy, with a low around 58. Southeast wind 7 to 9 mph.
Friday
Partly sunny, with a high near 82. South wind 8 to 13 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 63. South wind around 10 mph. Chance of precipitation is 40%.
Saturday
Showers and possibly a thunderstorm. High near 77. Southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 47. Chance of precipitation is 80%.
Sunday
A 20 percent chance of showers before 1pm. Sunny, with a high near 64.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 70.
Monday Night
A 30 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 50.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 69.
Tuesday Night
A 20 percent chance of showers. Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carrollton IL
 39.29°N 90.4°W (Elev. 568 ft)
Last Update:
5:56 am CDT Oct 16, 2025
Forecast Valid:
7am CDT Oct 16, 2025-6pm CDT Oct 22, 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