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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

51°F

11°C

Humidity 50%
Wind Speed S 12 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 21 Apr 3:51 am CDT
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 46. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 3pm. Partly sunny, with a high near 73. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 73 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47. West wind around 5 mph becoming northeast in the evening. Winds could gust as high as 10 mph.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 71. Northeast wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 10 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. South wind around 5 mph, with gusts as high as 10 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73.

    High: 73 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 46. South southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 3pm. Partly sunny, with a high near 73. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 47. West wind around 5 mph becoming northeast in the evening. Winds could gust as high as 10 mph.
Wednesday
Sunny, with a high near 71. Northeast wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 10 mph.
Wednesday Night
Partly cloudy, with a low around 52. South wind around 5 mph, with gusts as high as 10 mph.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 47.
Monday
A chance of showers. Mostly cloudy, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
3:46 am CDT Apr 21, 2026
Forecast Valid:
3am CDT Apr 21, 2026-6pm CDT Apr 27, 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