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.

Light Rain Fog/Mist

61°F

16°C

Humidity 97%
Wind Speed SW 13 mph
Barometer 29.75 in (1006.7 mb)
Dewpoint 60°F (16°C)
Visibility 5.00 mi
Last update 12 Apr 11:51 pm CDT
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms before 1am. Cloudy, with a low around 60. West southwest wind around 15 mph, with gusts as high as 35 mph.

    Low: 60 °F

    Chance
    Showers

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 77. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 80 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms. Low around 57. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 57 °F

    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms. High near 68. Chance of precipitation is 80%.

    High: 68 °F

    T-storms

  • Wednesday Night

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

    Low: 55 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms before 1am. Cloudy, with a low around 60. West southwest wind around 15 mph, with gusts as high as 35 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 77. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers and thunderstorms. Low around 57. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Wednesday
Showers and thunderstorms. High near 68. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 53.
Friday
Partly sunny, with a high near 80.
Friday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 53.
Saturday
Showers and thunderstorms likely. Mostly cloudy, with a high near 65.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
11:59 pm CDT Apr 12, 2026
Forecast Valid:
12am CDT Apr 13, 2026-6pm CDT Apr 19, 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