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

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

74°F

23°C

Humidity 52%
Wind Speed SW 10 G 24 mph
Barometer 29.71 in (1005.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 30 Mar 9:51 pm CDT
Extended Forecast for

Long Lake IL

Severe T-storm Watch until March 31, 03:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until March 31, 03:00am

    NOW until 3:00am Tue

    Severe T-storm Watch

  • Tonight

    Low: 61 °F

    Scattered
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 71. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 71 °F

    Breezy.
    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 10pm, then a chance of showers. Mostly cloudy, with a low around 35. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    T-storms
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 41. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 41 °F

    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 36. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

    Low: 36 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 66. Breezy. Chance of precipitation is 100%.

    High: 66 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

Detailed Forecast

Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 61. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 71. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Showers and thunderstorms likely before 10pm, then a chance of showers. Mostly cloudy, with a low around 35. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 41. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 36. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Thursday
Showers and possibly a thunderstorm. High near 66. Breezy. Chance of precipitation is 100%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 61.
Friday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 42.
Saturday
Showers likely. Mostly cloudy, with a high near 62.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 35.
Sunday
Mostly cloudy, with a high near 48.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Mostly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
9:26 pm CDT Mar 30, 2026
Forecast Valid:
9pm CDT Mar 30, 2026-6pm CDT Apr 6, 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