Flash Flooding Continuing Along the Gulf Coast; Dry Thunderstorms in the West

Excessive rainfall continues to produce life-threatening, locally catastrophic flash flooding along the central Gulf Coast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts Oregon, California, and the Great Basin into the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Partly Cloudy

73°F

23°C

Humidity 44%
Wind Speed W 7 mph
Barometer 29.94 in (1013.3 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 19 Jun 2:51 pm CDT
Extended Forecast for

McHenry IL

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 75. West wind around 10 mph, with gusts as high as 15 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am.  Mostly cloudy, with a low around 56. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 77. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. Northwest wind around 5 mph becoming calm  in the evening. Winds could gust as high as 15 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm.  Mostly cloudy, with a high near 71. Light and variable wind becoming east 10 to 15 mph in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers.  Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Showers
    Likely

  • Monday

    Monday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Mostly sunny, with a high near 75. West wind around 10 mph, with gusts as high as 15 mph.
Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am. Mostly cloudy, with a low around 56. West southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Saturday
Sunny, with a high near 77. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 56. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 71. Light and variable wind becoming east 10 to 15 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Monday
Partly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 55.
Wednesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
2:41 pm CDT Jun 19, 2026
3pm CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database