Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

A Few Clouds

88°F

31°C

Humidity 63%
Wind Speed SW 15 mph
Barometer 29.69 in (1004.0 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 10 Jun 2:51 pm CDT
Extended Forecast for

McHenry IL

Severe T-storm Watch June 10, 03:43pm until June 10, 07:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch June 10, 03:43pm until June 10, 07:00pm

    NOW until 7:00pm Wed

    Severe T-storm Watch

  • This Afternoon

    High: 91 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Some of the storms could be severe.  Mostly cloudy, with a low around 67. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Severe
    Thunderstorms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a high near 86. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Partly Sunny
    then Heavy
    Rain and
    Breezy

  • Thursday Night

    Thursday Night: Showers and thunderstorms, mainly before 10pm. Some of the storms could produce heavy rainfall.  Low around 57. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%.

    Low: 57 °F

    Heavy Rain
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Sunny, with a high near 80. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers.  Mostly cloudy, with a low around 57.

    Low: 57 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 4pm. Some of the storms could be severe and produce heavy rainfall. Partly sunny, with a high near 91. Heat index values as high as 99. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely, mainly before 1am. Some of the storms could be severe. Mostly cloudy, with a low around 67. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms, mainly before 10pm. Some of the storms could produce heavy rainfall. Low around 57. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Friday
Sunny, with a high near 80. West wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 84.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 57.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
A chance of showers. Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.32°N 88.26°W
3:02 pm CDT Jun 10, 2026
3pm CDT Jun 10, 2026-6pm CDT Jun 16, 2026
 
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