National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Two Storms Impacting the Central and Eastern U.S. Through This Weekend

Two storm systems will track through the central and eastern U.S. through this weekend with areas of gusty winds, rain, and heavy snow. Severe thunderstorms are forecast Friday from the central Gulf Coast into parts of the lower Mississippi, Tennessee and Ohio Valleys. Heavy to excessive rainfall is forecast from the lower Mississippi River Valley to the Tennessee Valley which may bring flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

A Few Clouds and Breezy

57°F

14°C

Humidity 78%
Wind Speed SW 25 G 48 mph
Barometer 29.33 in (993.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 9 Jan 2:51 am CST
Extended Forecast for

Mc Cullom Lake IL

  • Overnight

    Overnight: A slight chance of drizzle or sprinkles between 4am and 5am, then patchy drizzle with scattered showers after 5am. Mostly cloudy, with a low around 40. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 30%.

    Low: 40 °F

    Scattered
    Showers and
    Windy

  • Friday

    Friday: Patchy drizzle with scattered showers before 9am, then patchy drizzle with isolated sprinkles between 9am and 10am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 38 by 5pm. Breezy, with a northwest wind 15 to 25 mph decreasing to 5 to 15 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 50%.

    High: 42 °F⇓

    Scattered
    Showers and
    Breezy then
    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of rain between 3am and 5am, then a slight chance of snow after 5am. Increasing clouds, with a low around 30. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 30 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Saturday

    Saturday: Snow likely, mainly before noon. Cloudy, with a high near 35. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 35 °F

    Snow Likely
    and Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 20. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 20 °F

    Chance Snow
    and Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 31. Blustery.

    High: 31 °F

    Partly Sunny
    and Blustery
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of drizzle or sprinkles between 4am and 5am, then patchy drizzle with scattered showers after 5am. Mostly cloudy, with a low around 40. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 30%.
Friday
Patchy drizzle with scattered showers before 9am, then patchy drizzle with isolated sprinkles between 9am and 10am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 38 by 5pm. Breezy, with a northwest wind 15 to 25 mph decreasing to 5 to 15 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of rain between 3am and 5am, then a slight chance of snow after 5am. Increasing clouds, with a low around 30. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Snow likely, mainly before noon. Cloudy, with a high near 35. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 20. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 31. Blustery.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
A chance of showers after noon. Mostly cloudy, with a high near 43.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 30.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Cullom Lake IL
 42.36°N 88.29°W
Last Update:
3:35 am CST Jan 9, 2026
Forecast Valid:
3am CST Jan 9, 2026-6pm CST Jan 15, 2026
 
Forecast Discussion
 
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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