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

63°F

17°C

Humidity 29%
Wind Speed SE 16 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 6 Nov 11:54 am CST
Extended Forecast for

4 Miles S Carrollton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 63. South wind around 15 mph, with gusts as high as 24 mph.

    High: 63 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of rain between midnight and 4am. Mostly cloudy, with a low around 53. Southeast wind around 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 70. West wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 70 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. West wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of rain after noon. Partly sunny, with a high near 64. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 64 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 63. South wind around 15 mph, with gusts as high as 24 mph.
Tonight
A chance of rain between midnight and 4am. Mostly cloudy, with a low around 53. Southeast wind around 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 70. West wind 9 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 41. West wind around 6 mph becoming calm in the evening.
Saturday
A 40 percent chance of rain after noon. Partly sunny, with a high near 64. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 21.
Monday
Sunny, with a high near 42.
Monday Night
Mostly clear, with a low around 25.
Veterans Day
Mostly sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Carrollton IL
 39.24°N 90.4°W (Elev. 499 ft)
Last Update:
11:36 am CST Nov 6, 2025
Forecast Valid:
12pm CST Nov 6, 2025-6pm CST Nov 12, 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