The National Weather Service has a wind chill warning for Cook County in effect through 12 noon Tuesday, January 7, as an arctic cold snap settles over the region.
Monday will see a high of -12 and a low of -15, but factor in the wind, it may feel like -50 below, making it extremely dangerous for anyone outdoors.
Oak Lawn public and parochial schools, as well as Chicago Catholic high schools, have postponed classes for Monday. Many students were due to return from winter break.
Tuesday's temperatures will "warm up" to only 4 degrees, but wind chills will make it feel like -20 to -30 below.
Don't worry, the cold front is expected to leave the Chicago area by Wednesday, with temps reaching a "balmy" 20 degrees. Temperatures are expected to climb into the 30s later in the week.