CHICAGO (CBS) –Winter in Chicago has mostly been on hiatus, but not this week.

Bitter cold has settled into the area–with wind chills below zero on Monday morning. Temperatures early this week will be among the coldest in two years.

And it’s going to get colder.

The National Weather Service has issued a windchill advisory that begins early this evening and runs through tomorrow morning.

Temperatures will slowly fall during the day, with an overnight low around zero. Wind chills could reach 25 below zero.

On Tuesday, temperatures will struggle to get out of the single digits during the day. By the middle of the week, folks can expect highs in the 20s.

It’s worse for some of our neighbors to the north. CBS sister station WCCO reported wind chills of minus 30 degrees this morning.

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