Take a look back at some of Chicago's most frigid temps.
RELATED: What is a polar vortex
Chicago's coldest day on record dropped to -27 degrees 35 years ago
The Polar Vortex of 2019 was a close record breaker when an arctic chill dropped temperatures to -23 and -21 degrees for two days in a row on January 30 and 31, causing the city to ice over.
Tips to help beat the 'winter blues'
Tips to help beat the 'winter blues'
But it was on January 20, 1985 when Chicago marked its coldest day ever! The Chicago River steamed and cars frozen in place when temperatures throughout the city reached as low as 27 below zero.
RELATED: Flashback: Massive blizzard took over Chicago area in 1979
Flashback: Massive blizzard took over Chicago area in 1979