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

25°F

-4°C

Humidity 63%
Wind Speed NW 10 G 20 mph
Barometer 30.15 in (1022.5 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 22 Feb 12:51 am CST
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: A 30 percent chance of snow. Cloudy, with a low around 20. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Chance Snow

  • Sunday

    Sunday: A chance of snow before 10am, then a chance of flurries between 10am and 1pm, then a slight chance of snow after 1pm. Mostly cloudy, with a high near 25. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 25 °F

    Chance Snow
    and Blustery

  • Sunday Night

    Sunday Night: A chance of flurries. Cloudy, then gradually becoming partly cloudy, with a low around 14. Wind chill values as low as zero. North northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 14 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 26. Wind chill values as low as -1. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 26 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16. Light and variable wind becoming south 5 to 10 mph after midnight.

    Low: 16 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 40.

    High: 40 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A slight chance of snow, mixing with rain after 9pm, then gradually ending. Mostly cloudy, with a low around 24. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

Detailed Forecast

Overnight
A 30 percent chance of snow. Cloudy, with a low around 20. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday
A chance of snow before 10am, then a chance of flurries between 10am and 1pm, then a slight chance of snow after 1pm. Mostly cloudy, with a high near 25. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Sunday Night
A chance of flurries. Cloudy, then gradually becoming partly cloudy, with a low around 14. Wind chill values as low as zero. North northwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 26. Wind chill values as low as -1. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 16. Light and variable wind becoming south 5 to 10 mph after midnight.
Tuesday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 40.
Tuesday Night
A slight chance of snow, mixing with rain after 9pm, then gradually ending. Mostly cloudy, with a low around 24. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 22.
Thursday
A chance of snow before noon. Partly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Sunny, with a high near 50.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Partly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
1:21 am CST Feb 22, 2026
Forecast Valid:
1am CST Feb 22, 2026-6pm CST Feb 28, 2026
 
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Additional Resources

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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