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.

Overcast

58°F

14°C

Humidity 65%
Wind Speed W 9 G 18 mph
Barometer 30.01 in (1015.7 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 9 Apr 3:51 am CDT
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: Scattered showers. Cloudy, with a steady temperature around 54. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Scattered
    Showers

  • Thursday

    Thursday: Cloudy through mid morning, then gradual clearing, with a high near 66. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 9pm. Low around 43. Southwest wind 5 to 10 mph becoming northeast after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Showers

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 55. North wind 5 to 10 mph.

    High: 55 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. East northeast wind 5 to 10 mph becoming light east in the evening.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 1pm. Mostly cloudy, with a high near 73. Breezy.

    High: 73 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Showers
    Likely

Detailed Forecast

Overnight
Scattered showers. Cloudy, with a steady temperature around 54. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Thursday
Cloudy through mid morning, then gradual clearing, with a high near 66. Southwest wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Showers, mainly after 9pm. Low around 43. Southwest wind 5 to 10 mph becoming northeast after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A 30 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 55. North wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 33. East northeast wind 5 to 10 mph becoming light east in the evening.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Sunday
A chance of showers after 1pm. Mostly cloudy, with a high near 73. Breezy.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 62.
Monday
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 46.
Wednesday
A chance of showers. Mostly cloudy, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
4:01 am CDT Apr 9, 2026
Forecast Valid:
4am CDT Apr 9, 2026-6pm CDT Apr 15, 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