The frigid temperatures dipped even lower today, and in doing so they broke a record that's been around for more than 100 years.
With an official high of just 19 degrees, Tuesday marked the coldest Nov. 18 on record in Chicago. The previous record of 22 degrees was set in 1903.
The bone-chilling temperatures made it a difficult day for firefighters and anyone who has to be outside today.
Temperatures are expected to rise over the weekend, but still be below normal for Thanksgiving.