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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

38°F

3°C

Humidity 73%
Wind Speed N 5 mph
Barometer 30.12 in (1020.9 mb)
Dewpoint 30°F (-1°C)
Visibility 7.00 mi
Wind Chill34°F (1°C)
Last update 3 Mar 11:51 am CST
Extended Forecast for

Long Lake IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 41. Calm wind becoming north northeast around 5 mph.

    High: 41 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 46. Calm wind becoming east around 5 mph. Winds could gust as high as 15 mph.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 3am. Patchy fog after midnight. Otherwise, cloudy, with a low around 38. East wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 38 °F

    Slight Chance
    Showers then
    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, cloudy, with a high near 47. East northeast wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph. Chance of precipitation is 70%.

    High: 47 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Showers

  • Friday

    Friday: Showers likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then showers after 3pm. High near 67. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Friday Night

    Friday Night: Showers. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: A chance of showers before noon. Mostly cloudy, with a high near 60.

    High: 60 °F

    Chance
    Showers then
    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 41. Calm wind becoming north northeast around 5 mph.
Tonight
Partly cloudy, with a low around 30. Calm wind.
Wednesday
A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 46. Calm wind becoming east around 5 mph. Winds could gust as high as 15 mph.
Wednesday Night
Showers likely, mainly after 3am. Patchy fog after midnight. Otherwise, cloudy, with a low around 38. East wind around 5 mph becoming calm. Chance of precipitation is 60%.
Thursday
Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, cloudy, with a high near 47. East northeast wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph. Chance of precipitation is 70%.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 39.
Friday
Showers likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then showers after 3pm. High near 67. Chance of precipitation is 90%.
Friday Night
Showers. Mostly cloudy, with a low around 50.
Saturday
A chance of showers before noon. Mostly cloudy, with a high near 60.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 65.
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:
12:21 pm CST Mar 3, 2026
Forecast Valid:
12pm CST Mar 3, 2026-6pm CDT Mar 9, 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