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

38°F

3°C

Humidity 86%
Wind Speed Calm
Barometer 29.92 in (1013.9 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 26 Dec 7:51 pm CST
Extended Forecast for

Long Lake IL

  • Tonight

    Tonight: Patchy fog after 10pm. Otherwise, cloudy, with a low around 36. Northwest wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, cloudy, with a high near 44. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 44 °F

    Patchy Fog
    then Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers or drizzle after 9pm. Patchy fog after 9pm. Otherwise, cloudy, with a temperature rising to around 46 by 5am. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 42 °F⇑

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly after noon. Areas of fog before 9am. High near 52. South wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 52 °F

    Scattered
    Showers and
    Areas Fog
    then Showers

  • Sunday Night

    Sunday Night: Rain likely before 9pm, then rain and snow likely between 9pm and midnight, then a chance of snow after midnight. Cloudy, with a low around 18. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.

    Low: 18 °F

    Blustery.
    Rain/Snow
    Likely then
    Chance Snow

  • Monday

    Monday: A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 23. Blustery.

    High: 23 °F

    Blustery.
    Chance Snow
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Blustery.

    Low: 13 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 10pm. Otherwise, cloudy, with a low around 36. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 10am. Otherwise, cloudy, with a high near 44. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers or drizzle after 9pm. Patchy fog after 9pm. Otherwise, cloudy, with a temperature rising to around 46 by 5am. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Showers, mainly after noon. Areas of fog before 9am. High near 52. South wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Sunday Night
Rain likely before 9pm, then rain and snow likely between 9pm and midnight, then a chance of snow after midnight. Cloudy, with a low around 18. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.
Monday
A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 23. Blustery.
Monday Night
Partly cloudy, with a low around 13. Blustery.
Tuesday
Partly sunny, with a high near 27.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
Mostly cloudy, with a high near 26.
Wednesday Night
Partly cloudy, with a low around 5.
New Year's Day
Sunny, with a high near 14.
Thursday Night
Mostly clear, with a low around 2.
Friday
Mostly sunny, with a high near 18.
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:
8:01 pm CST Dec 26, 2025
Forecast Valid:
8pm CST Dec 26, 2025-6pm CST Jan 2, 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