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

A Couple of Fast Moving Storms Affecting Areas Along and East of the Rockies

A couple of storm systems will impact travel conditions through the first half of this weekend. Heavy snow from the mountains of the West will move into the upper Midwest and upper Great Lakes through tonight. Record warmth and Gulf moisture along and east of the Mississippi River will fuel severe thunderstorms, heavy rainfall, fog for the Tennessee Valley and deep South on Friday into Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Light Rain

54°F

12°C

Humidity 97%
Wind Speed S 15 G 26 mph
Barometer 29.53 in (1000.1 mb)
Dewpoint 53°F (12°C)
Visibility 8.00 mi
Wind Chill50°F (10°C)
Last update 8 Jan 5:52 pm CST
Extended Forecast for

Deer Park IL

  • Tonight

    Tonight: Showers and thunderstorms before 5am, then a chance of showers. Low around 41. Breezy, with a south southeast wind around 20 mph becoming west southwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 40 by 5pm. Breezy, with a west southwest wind 15 to 20 mph becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 44 °F⇓

    Chance
    Showers and
    Breezy then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31. North northwest wind around 5 mph becoming calm.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 36. South southwest 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 60%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 20. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Partly sunny, with a high near 31.

    High: 31 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23.

    Low: 23 °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 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms before 5am, then a chance of showers. Low around 41. Breezy, with a south southeast wind around 20 mph becoming west southwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 40 by 5pm. Breezy, with a west southwest wind 15 to 20 mph becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 40 mph.
Friday Night
Mostly cloudy, with a low around 31. North northwest wind around 5 mph becoming calm.
Saturday
Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 36. South southwest 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 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 20. West wind around 15 mph, with gusts as high as 25 mph.
Sunday
A 20 percent chance of snow before noon. Partly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
A chance of rain after noon. Mostly cloudy, with a high near 42.
Tuesday Night
A chance of rain and snow. Cloudy, with a low around 29.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deer Park IL
 42.18°N 88.09°W
Last Update:
4:11 pm CST Jan 8, 2026
Forecast Valid:
6pm CST Jan 8, 2026-6pm CST Jan 15, 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