Fans of the NFL's Green Bay Packers braved the lowest temperatures in two decades to watch their team play against the San Francisco 49ers on Sunday.
Packers fans were urged to wear multiple layers and hot drinks were handed out during the game.
As much of the US experiences a dangerous and severe cold spell, does the UK have anything to worry about?
As the US battles sub-zero temperatures, ITV News Washington correspondent Robert Moore illustrates just how cold it is in Minnesota.
Leaders across America are urging residents to stay in their homes as "polar vortex" batters the east coast after snowstorm Hercules.