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.

Fog/Mist

37°F

3°C

Humidity 100%
Wind Speed Calm
Barometer 30.06 in (1019.1 mb)
Dewpoint 37°F (3°C)
Visibility 1.25 mi
Last update 4 Mar 6:51 pm CST
Extended Forecast for

Long Lake IL

  • Tonight

    Tonight: Scattered showers before midnight, then isolated showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 39. Northeast wind around 5 mph. Chance of precipitation is 40%.

    Low: 39 °F

    Scattered
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Scattered showers, mainly before 9am. Areas of fog. Otherwise, cloudy, with a high near 46. Northeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    High: 46 °F

    Scattered
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight.

    Low: 38 °F

    Patchy Fog
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 70. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    High: 70 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 51. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before noon. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers before midnight, then isolated showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 39. Northeast wind around 5 mph. Chance of precipitation is 40%.
Thursday
Scattered showers, mainly before 9am. Areas of fog. Otherwise, cloudy, with a high near 46. Northeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Thursday Night
A 20 percent chance of showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight.
Friday
A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 70. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 51. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before noon. Mostly cloudy, with a high near 57.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 69.
Monday Night
A chance of showers. Partly cloudy, with a low around 47.
Tuesday
Showers likely. Mostly cloudy, with a high near 61.
Tuesday Night
Showers. Cloudy, with a low around 34.
Wednesday
A chance of rain and snow showers. Mostly cloudy, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
4:46 pm CST Mar 4, 2026
Forecast Valid:
7pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation