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

32°F

0°C

Humidity 100%
Wind Speed E 3 mph
Barometer 30.02 in (1016.8 mb)
Dewpoint 32°F (0°C)
Visibility 0.25 mi
Last update 16 Feb 2:54 am CST
Extended Forecast for

Kane IL

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 37. South wind 3 to 5 mph.

    Low: 37 °F

    Patchy Fog

  • Washington's Birthday

    Washington's Birthday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 65. South wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 65 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. South wind around 8 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63. South wind 8 to 18 mph, with gusts as high as 28 mph.

    High: 63 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 54. South wind 16 to 18 mph, with gusts as high as 31 mph.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 35.

    Low: 35 °F

    Slight Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 37. South wind 3 to 5 mph.
Washington's Birthday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 65. South wind 6 to 11 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 42. South wind around 8 mph.
Tuesday
Mostly cloudy, with a high near 63. South wind 8 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 54. South wind 16 to 18 mph, with gusts as high as 31 mph.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Chance of precipitation is 30%.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 35.
Friday
A 20 percent chance of showers after noon. Partly sunny, with a high near 49.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 29.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 47.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 26.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 39.
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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:
3:36 am CST Feb 16, 2026
Forecast Valid:
3am CST Feb 16, 2026-6pm CST Feb 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation