The cold wind chills will cause frostbite in as little as 30 minutes to exposed skin.
According to the weather service's website, daytime highs Saturday will be around minus 15 degrees, with the overnight low Saturday night expected to be around minus 27 degrees.
A Wind Chill Advisory will go into effect later tonight for all of southeastern MI.
Note on the map below Wind Chill Warnings and Advisories (grey and light-blue shaded areas) extend from the Canadian border all the way south into Oklahoma, Arkansas, Mississippi and Alabama.
Wind chills down to 25 below are forecast New Year's Eve night, and down to 15 below before then, as the bone-chilling weather is expected to continue well into next week.
The Chicago National Weather Service has issued a combination of Wind Chill Warnings and Advisories across the entire Chicago area from 9PM CST Sunday evening until noon CST Tuesday calling for risky wind chills -20 to -35-degrees. Wear warm shoes or boots, and make sure as much exposed skin as possible is covered by gloves, hats, ear muffs, and scarves. Dry conditions will likely continue as well with no chance for any snow in the next 8 days.
Temperatures will moderate some through the week ahead with high temperatures returning to the 20s.
Monday: Sunny, high near 3.
Tonight: Partly cloudy. Wind: NE 10-15; gusty. Wind: NE 5-10. High: 12. Highs through the New Year for most will not top 0° (Fahrenheit).
New Year's Day: Mostly sunny.
Tue: High: 23 Low: 0 Sunny. A sprawling area of arctic high pressure is to blame for the cold, even though that high is centered well to our west across the central part of the country through the start of the week.
Wed: High: 32 Low: 13 Sunny.