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.

Fair

47°F

8°C

Humidity 54%
Wind Speed SW 7 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 29 Mar 11:51 pm CDT
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: Mostly clear, with a low around 46. South southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a steady temperature around 62. South wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph.

    Low: 62 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 74. Breezy, with a south southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    High: 74 °F

    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 10pm, then showers likely. Low around 36. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 36 °F

    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 42.

    High: 42 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Cloudy, with a low around 33. Chance of precipitation is 70%.

    Low: 33 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely. Cloudy, with a high near 46.

    High: 46 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, mainly before 1am. Cloudy, with a low around 35.

    Low: 35 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 46. South southwest wind around 5 mph, with gusts as high as 10 mph.
Monday
Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a steady temperature around 62. South wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph.
Tuesday
Showers and possibly a thunderstorm. High near 74. Breezy, with a south southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 10pm, then showers likely. Low around 36. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Wednesday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 42.
Wednesday Night
Showers likely, mainly after 1am. Cloudy, with a low around 33. Chance of precipitation is 70%.
Thursday
Showers likely. Cloudy, with a high near 46.
Thursday Night
Showers likely, mainly before 1am. Cloudy, with a low around 35.
Friday
Mostly cloudy, with a high near 52.
Friday Night
A chance of showers. Mostly cloudy, with a low around 39.
Saturday
Showers likely. Cloudy, with a high near 64.
Saturday Night
Showers likely. Cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 53. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
12:17 am CDT Mar 30, 2026
Forecast Valid:
12am CDT Mar 30, 2026-6pm CDT Apr 5, 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