Heavy Snow in the Northern Plains and Upper Midwest; Severe Thunderstorms in the Southern U.S.

In the north-central U.S., a storm will bring heavy snow and gusty to high winds over parts of the northern Plains and Upper Midwest today before moving across the Great Lakes with heavy lake effect snow Wednesday into Thanksgiving Day. Isolated severe thunderstorms are likely across parts of the Southeast/Deep South, mainly from this morning into early evening. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed Calm
Barometer 29.77 in (1008.5 mb)
Dewpoint 47°F (8°C)
Visibility 4.00 mi
Last update 25 Nov 9:51 am CST
Extended Forecast for

McHenry IL

Wind Advisory November 26, 03:00am until November 26, 09:00pm
Click here for hazard details and duration
Wind Advisory
  • Today

    Today: Areas of fog before noon.  Otherwise, cloudy, with a high near 51. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 51 °F

    Areas Fog
    then Cloudy

  • Tonight

    Tonight: Rain showers likely before 3am, then a slight chance of rain and snow showers between 3am and 4am, then a slight chance of snow showers after 4am.  Cloudy, with a low around 33. Breezy, with a west southwest wind 5 to 15 mph increasing to 15 to 25 mph after midnight. Winds could gust as high as 40 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 33 °F

    Showers
    Likely then
    Slight Chance
    Rain/Snow and
    Breezy

  • Wednesday

    Wednesday: Snow showers likely, mainly before noon.  Cloudy, with a temperature rising to near 34 by 11am, then falling to around 30 during the remainder of the day. Windy, with a west wind 25 to 30 mph, with gusts as high as 50 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Snow Showers
    Likely and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 40 mph.

    Low: 23 °F

    Mostly Cloudy
    and Blustery

  • Thanksgiving Day

    Thanksgiving Day: Partly sunny, with a high near 31. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 31 °F

    Partly Sunny
    and Blustery

  • Thursday Night

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

    Low: 19 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Snow likely, mainly after 3am.  Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: Snow likely.  Cloudy, with a high near 31.

    High: 31 °F

    Snow Likely

Detailed Forecast

Today
Areas of fog before noon. Otherwise, cloudy, with a high near 51. Calm wind becoming south southwest around 5 mph in the afternoon.
Tonight
Rain showers likely before 3am, then a slight chance of rain and snow showers between 3am and 4am, then a slight chance of snow showers after 4am. Cloudy, with a low around 33. Breezy, with a west southwest wind 5 to 15 mph increasing to 15 to 25 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday
Snow showers likely, mainly before noon. Cloudy, with a temperature rising to near 34 by 11am, then falling to around 30 during the remainder of the day. Windy, with a west wind 25 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly cloudy, with a low around 23. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 40 mph.
Thanksgiving Day
Partly sunny, with a high near 31. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 30.
Friday Night
Snow likely, mainly after 3am. Mostly cloudy, with a low around 21.
Saturday
Snow likely. Cloudy, with a high near 31.
Saturday Night
Snow likely. Mostly cloudy, with a low around 23.
Sunday
A chance of snow. Partly sunny, with a high near 33.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 20.
Monday
A chance of snow. Mostly cloudy, with a high near 30.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
10:01 am CST Nov 25, 2025
10am CST Nov 25, 2025-6pm CST Dec 1, 2025
 
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Additional Resources

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