The Sawyer County Sheriff's Department says a 51-year-old Hayward man has died from exposure to cold in northern Wisconsin.
Chief Deputy Tim Zeigle says the man was found Tuesday about 190 yards from his home after his son reporting him missing.
Zeigle says the son indicated his father was prone to sleep walking and deputies followed bare foot tracks in the snow to find the man. His name was not released pending notification of relatives.
The National Weather Service says the temperature in Hayward plunged to 16 below zero Tuesday morning. One resident outside the city says it got to minus 22 at his home. The weather service says the cold will continue through Friday, with wind chills reaching up to 55 below zero in parts of northern Wisconsin.