National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

65°F

18°C

Humidity 76%
Wind Speed S 7 mph
Barometer 30.02 in (1015.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 11 Oct 9:51 am CDT
Extended Forecast for

Mc Henry IL

  • Today

    Today: Sunny, with a high near 78. South wind 5 to 10 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 60. South southwest wind around 5 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 85. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 68. South southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 68 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Sunny, with a high near 78. West southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers. Mostly cloudy, with a high near 68.

    High: 68 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 66.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 78. South wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 60. South southwest wind around 5 mph.
Columbus Day
Mostly sunny, with a high near 85. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 68. South southwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 78. West southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 55.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 68.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 66.
Thursday Night
A chance of showers. Cloudy, with a low around 47.
Friday
Mostly cloudy, with a high near 60.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Mostly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Henry IL
 42.34°N 88.29°W
Last Update:
10:05 am CDT Oct 11, 2026
Forecast Valid:
10am CDT Oct 11, 2026-6pm CDT Oct 17, 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