Minnesota winter: When are frigid conditions actually extreme?

Braving the cold
Pedestrians brave the cold as they cross Robert St. N. in downtown St. Paul, Minn., on Wednesday, Jan. 7, 2015.
Jeffrey Thompson / MPR News

The wind chill factor at the airport in Grand Marais plunged to minus 54 degrees Wednesday morning, the coldest of the winter so far.

The bitter-cold forecast prompted schools in Minneapolis and the Anoka-Hennepin school districts to close. Other districts -- including Brooklyn Center, Rochester, Monticello, and Big Lake -- also told kids to stay home.

Minus 54 degrees is cold enough to freeze exposed skin in as little as two minutes. But it gets cold every January, right?

Peter Boulay from the Minnesota State Climatology Office joins The Daily Circuit to discuss winter weather extremes in the state.