01/21/2011 11:03 am ET | Updated May 25, 2011

Freezing Temperatures Hit Chicago: Wind Chill Advisory In Effect

The Friday morning sunshine is nice to see, but it probably isn't providing much relief to Chicagoans forced to commute.

On Thursday night, a blast of arctic air hit Chicago and wind chill readings ranged from 10 to 22 degrees below zero through Friday morning.

The National Weather Service issued a wind chill advisory in effect until 11 a.m., and warns of frost bite and hypothermia "if precautions are not taken."

The temperatures are expected to rise throughout the day, and hit about 20 degrees by Saturday. When the Green Bay Packers come to town for the NFC Championship on Sunday, temperatures will be in the mid-20s with possible snow near the lake, according to the NWS.

Friday's temperatures are the coldest they have been since Jan. 3 of last year, according to the Chicago Tribune. The Illinois Department of Human Services urges those in need to take refuge in one of the state's 120 warming centers. For a list of participating centers, visit