The weather service has issued wind chill warnings for northwestern and central IL and wind chill advisories for the Chicago area and parts of central and southern IL.
Madison experienced its second-coldest holiday week on record this season, as bitter cold temperatures almost edged out a 131-year-old record.
"The coldest airmass yet will likely be coming at the end of the week", the Weather Service said in a forecast discussion.
Between late Monday night and into Tuesday morning, there's a chance for light snow, though AccuWeather senior meteorologist Dan Pydynowski said, "It doesn't look like little, if any, accumulation".
Snow and/or ice is also forecast in portions of Georgia, the Carolinas, Virginia, Maryland, Delaware, New Jersey and NY.
Right now, the track of Tuesday's storm may pull in enough mild weather that it could be either an all-rain event or a mixture of rain and snow from Philadelphia to NY to Boston.
Forty US states were under official winter alerts for bitter cold or snow on Tuesday morning.
Forecasters see rapid strengthening - or cyclogenesis! - while the storm is east of Florida, and then it moves quickly northward off the coast with nothing to block its path.
All day Thursday meteorologists are going to be glued to the new GOES-East satellite watching a truly unbelievable extratopical "bomb" cyclone off New England coast. West wind 13 to 15 miles per hour.
Another shot of arctic air for Friday into the weekend. A wintry mix was forecast for Wednesday. Light and variable wind becoming north 5 to 9 miles per hour after midnight.
Temperatures are expected to climb to near freezing by midafternoon today.
Huma Abedin's documents on husband's computer released
Clinton's team has partly blamed what has become known as "the Comey letter" for her defeat to Donald Trump days later. A November 2010 email was partially redacted due to " classified " and "confidential" information.
And the cold isn't going away.
The cold temperatures sweeping across northern USA cities saw forecasters warn of hypothermia and frostbite from arctic air settling in over central areas of the country and spreading east.
The next air mass will be up to 10 degrees colder than the front that froze the Northeast the last few days, Elliott said.
"I'm here since '78 and I don't remember cold weather like this", Yiannis Galanopoulos, who sells $3 cheese pretzels from a cart in New York's Times Square, said as he warmed his hands over the glowing charcoals that keep his wares hot.
It's 17 degrees in Atlanta.
The weather already has been deadly.
The Milwaukee County Medical Examiner's Office said two men whose bodies were found Sunday showed signs of hypothermia.
Police believe a man found dead outside a church in Detroit, Michigan, froze to death. The temperature hit 20 below zero (-29 Celsius) early Monday, with the wind chill dipping to negative 31 degrees (-35 Celsius). Students had been scheduled to return from winter break. Other districts in OH, including Canton, shut schools for the day. "We're used to a lot of snow here in Erie, but this is unprecedented, the amount we got", Dahlkemper said.
"The weather service said temperatures in Indianapolis early Tuesday tied a record low of minus 12 degrees Fahrenheit (minus 24 degrees Celsius) for January 2 set in 1887". The city's previous New Year's Day record had stood for 99 years.
Omaha, Nebraska, broke a record dating back more than 130 years as teeth chattered in temperatures of -20F (-29C).
New York Mayor Bill de Blasio kicked off his second term Monday with an outdoor swearing-in ceremony and temperatures in the teens.