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.

Fog/Mist

68°F

20°C

Humidity 93%
Wind Speed Calm
Barometer 30.05 in (1017.1 mb)
Dewpoint 66°F (19°C)
Visibility 5.00 mi
Last update 15 Oct 2:54 am CDT
Extended Forecast for

Kane IL

  • Overnight

    Overnight: A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 64. Light east wind.

    Low: 64 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 9am and 11am. High near 79. East wind 5 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 79 °F

    Showers and
    Patchy Fog
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 10pm, then scattered showers between 10pm and 1am. Mostly cloudy, with a low around 43. Northwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely then
    Scattered
    Showers

  • Friday

    Friday: Isolated showers after 3pm. Partly sunny, with a high near 56. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 56 °F

    Breezy.
    Mostly Sunny
    then Isolated
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34. North wind 8 to 17 mph, with gusts as high as 26 mph.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 34.

    Low: 34 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 64. Light east wind.
Thursday
Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 9am and 11am. High near 79. East wind 5 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Thursday Night
Showers and thunderstorms likely before 10pm, then scattered showers between 10pm and 1am. Mostly cloudy, with a low around 43. Northwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Friday
Isolated showers after 3pm. Partly sunny, with a high near 56. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 34. North wind 8 to 17 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 60.
Saturday Night
Clear, with a low around 34.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kane IL
 39.2°N 90.38°W (Elev. 551 ft)
Last Update:
1:26 am CDT Oct 15, 2026
Forecast Valid:
3am CDT Oct 15, 2026-6pm CDT Oct 21, 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