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

36°F

2°C

Humidity 76%
Wind Speed Calm
Barometer 29.72 in (1006.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 25 Feb 5:54 am CST
Extended Forecast for

Kane IL

  • Today

    Today: Mostly sunny, then becoming cloudy during the afternoon, with a high near 49. Light and variable wind becoming north around 6 mph.

    High: 49 °F

    Becoming
    Cloudy

  • Tonight

    Tonight: Rain likely, mainly after 1am. Mostly cloudy, with a low around 32. Northeast wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 32 °F

    Rain Likely

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 52. Northeast wind around 6 mph becoming southwest in the afternoon.

    High: 52 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 33. South wind 3 to 6 mph.

    Low: 33 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 67. Southwest wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 57.

    High: 57 °F

    Sunny then
    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Partly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.

    High: 42 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Mostly sunny, then becoming cloudy during the afternoon, with a high near 49. Light and variable wind becoming north around 6 mph.
Tonight
Rain likely, mainly after 1am. Mostly cloudy, with a low around 32. Northeast wind 3 to 6 mph. Chance of precipitation is 60%.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 52. Northeast wind around 6 mph becoming southwest in the afternoon.
Thursday Night
Clear, with a low around 33. South wind 3 to 6 mph.
Friday
Sunny, with a high near 67. Southwest wind 6 to 14 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 38.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 57.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 28.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.
Sunday Night
Rain and snow likely, mainly before midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 38.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 27.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kane IL
 39.2°N 90.38°W (Elev. 551 ft)
Last Update:
5:26 am CST Feb 25, 2026
Forecast Valid:
6am CST Feb 25, 2026-6pm CST Mar 3, 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