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.

Fog/Mist

38°F

3°C

Humidity 89%
Wind Speed S 8 mph
Barometer 29.97 in (1015.8 mb)
Dewpoint 35°F (2°C)
Visibility 5.00 mi
Wind Chill32°F (0°C)
Last update 27 Dec 11:51 am CST
Extended Forecast for

Mc Henry IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 42. Southeast wind around 10 mph.

    High: 42 °F

    Cloudy

  • Tonight

    Tonight: Showers likely, mainly after 3am. Patchy fog. Otherwise, cloudy, with a temperature rising to around 45 by 5am. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F⇑

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers. Patchy fog before noon. High near 56. South wind 5 to 10 mph becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 56 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain showers likely before 9pm, then snow showers likely, possibly mixed with rain between 9pm and midnight, then a chance of snow showers after midnight. Cloudy, with a low around 17. Wind chill values as low as -1. Windy, with a west wind 20 to 25 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Windy.
    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Monday

    Monday: A 50 percent chance of snow showers, mainly before noon. Mostly cloudy, with a high near 23. Windy, with a west northwest wind 20 to 30 mph, with gusts as high as 45 mph.

    High: 23 °F

    Chance Snow
    Showers and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. Blustery.

    Low: 11 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Cloudy, with a high near 42. Southeast wind around 10 mph.
Tonight
Showers likely, mainly after 3am. Patchy fog. Otherwise, cloudy, with a temperature rising to around 45 by 5am. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers. Patchy fog before noon. High near 56. South wind 5 to 10 mph becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
Rain showers likely before 9pm, then snow showers likely, possibly mixed with rain between 9pm and midnight, then a chance of snow showers after midnight. Cloudy, with a low around 17. Wind chill values as low as -1. Windy, with a west wind 20 to 25 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
A 50 percent chance of snow showers, mainly before noon. Mostly cloudy, with a high near 23. Windy, with a west northwest wind 20 to 30 mph, with gusts as high as 45 mph.
Monday Night
Partly cloudy, with a low around 11. Blustery.
Tuesday
Partly sunny, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Mostly cloudy, with a high near 28.
Wednesday Night
A chance of snow before midnight. Mostly cloudy, with a low around 8.
New Year's Day
Sunny, with a high near 15.
Thursday Night
Mostly clear, with a low around 2.
Friday
Sunny, with a high near 19.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Henry IL
 42.34°N 88.29°W
Last Update:
12:31 pm CST Dec 27, 2025
Forecast Valid:
12pm CST Dec 27, 2025-6pm CST Jan 2, 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