The National Weather Service has warned that the "dangerously low temperatures" will persist in many parts of the US on Tuesday.
The weather system is beginning to creep eastwards but temperatures will remain on average around 20 degrees (Fahrenheit) below where they should be for the time of year.
NBC News reports that Hawaii is the only state in the country that is not affected by freezing temperatures.
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.