Winter Storm Warning from 10:15 a.m. EST Thursday until 4 p.m. EST Friday.
Christmas will be cold, with a chance of some scattered flurries early and sub-zero wind chills, Dutra said.
Last Christmas was much warmer, with temperatures reaching into the 50s in the Chicago area.
Cook County Warming Centers Open
The Cook County Department of Emergency Management and Regional Security (EMRS) is reminding residents to take appropriate precautions to protect themselves and their families as temperatures plummet throughout the region Thursday night.
Warming centers will be opening across Cook County for residents who do not have adequate heating in their homes to ensure everyone remains safe.