Minor light snow may begin around 9:00 p.m. Saturday, December 6, 2025, but significant snowfall accumulation is forecast to occur from about 12:00 a.m. to 5:00 a.m. Sunday. Snow is forecast to linger until 11:00 a.m., and snow flurries may continue into Sunday night and Monday.
Total new snowfall accumulation is forecast to amount to 3.6 inches during the period from 12:00 a.m. to 11:00 a.m. Sunday.
A clipper system will deliver a swath of snow to the area Saturday night into Sunday morning. A Winter Weather Advisory has been issued for a portion of northern Illinois where snow totals in the 3-5″ range are expected. A wintry mix also looks increasingly likely south of I-80.
Light lake effect snow may develop into portions of northeast Illinois and northwest Indiana late Sunday through Monday morning.
Weather Radar at at 12:30 p.m. Saturday, December 6, 2025 in all of Illinois and most of Wiscsonin was clear. Most of the Midwest is under cloudy conditions.
See also Arlingtoncardinal.com/clouds
Here is our latest five-day forecast. Regular chances for wintry precipitation are expected from this weekend through the upcoming week. #ILwx #INwx pic.twitter.com/buq2nx1ApW
— NWS Chicago (@NWSChicago) December 6, 2025
O’HARE FORECAST …
Saturday Afternoon: A slight chance of flurries. Mostly cloudy, with a high near 30. West northwest wind around 5 mph becoming east southeast.
Saturday Night: Snow, mainly after midnight. Low around 22. East southeast wind 5 to 10 mph becoming north northeast after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
WINTER WEATHER ADVISORY MIDNIGHT TO 9 AM CST SUNDAY…
* WHAT…Snow expected. Total snow accumulations between 2 and 5 inches.
* WHERE…A portion of northeast Illinois.
* WHEN…From midnight tonight to 9 AM CST Sunday.
* IMPACTS…Plan on slippery road conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Slow down and use caution while traveling. The latest road conditions for Illinois can be obtained at www.gettingaroundillinois.com.
Sunday: A 50 percent chance of snow, mainly before noon. Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 26 by 9am, then falling to around 19 during the remainder of the day. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 13. North wind 5 to 10 mph, with gusts as high as 15 mph.
Monday: A 20 percent chance of snow showers before noon. Partly sunny, with a high near 24. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 14.
Tuesday: A slight chance of snow before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 20%.
Tuesday Night: Rain and snow, becoming all rain after midnight. Cloudy, with a low around 32.
Wednesday: Rain and snow likely before noon, then a chance of snow. Mostly cloudy, with a high near 35.
Wednesday Night: A chance of snow before midnight. Mostly cloudy, with a low around 15.
Thursday: A chance of snow. Mostly cloudy, with a high near 24.
Thursday Night: A chance of snow. Mostly cloudy, with a low around 12.
Friday: Partly sunny, with a high near 20.
LAKE TEMPS …
Southern Lake Michigan Water Temperatures
National Weather Service Chicago/Romeoville IL
957 AM CST Sat Dec 6 2025
Lake Michigan Water Temperatures…
Chicago Shore………..35.
Chicago Crib…………43.
Michigan City………..41.
South Mid Lake Buoy…..44.
&&
M is for missing data that is normally available. Chicago Shore, Chicago Crib, and Michigan City are read every day of the year.
Measured at a depth of 60 ft for Chicago Crib and 30 ft for Michigan City. May not represent surface temperature.
For Lake Michigan water levels, please see:
water.usace.army.mil/office/lre/forecast/weekly
december.chicagoweatherstation.com
Chicago Weather Forecast for your MAC/PC/TABLET includes surrounding suburbs.
^^ MOBILE? USE VOICE MIC ^^
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