While I was at Penn State it hit 40 below for a few days. And that was BEFORE wind chill--with it, we were looking at 80 freaking degrees below zero.
The weather people were saying that if you went outside, any exposed skin would be frostbitten within a minute.
In a Looney Tunes moment, I went out with a small pot of water and threw the water up in the air. It froze by the time gravity brought it back to earth.
Power transformers froze up and exploded. As a result, Penn State had to cancel classes for the day because they couldn't heat the buildings.