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NEW YORK, NY - DECEMBER 28:  A woman walks through a frigid Manhattan on December 28, 2017 in New York City. Dangerously low temperatures and wind chills the central and eastern United States are making outdoor activity difficult for many Americans.  Little relief from the below normal temperatures is expected the first week of the New Year.   (Photo by Spencer Platt/Getty Images)
NEW YORK, NY - DECEMBER 28:  A woman walks through a frigid Manhattan on December 28, 2017 in New York City. Dangerously low temperatures and wind chills the central and eastern United States are making outdoor activity difficult for many Americans.  Little relief from the below normal temperatures is expected the first week of the New Year.   (Photo by Spencer Platt/Getty Images)

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    Bitterly cold temperatures to linger for days

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Bitterly cold temperatures to linger for days

Hard freeze warnings remain in effect for much of the country with wind chill advisories stretching from Canada to Mexico. CNN's Jennifer Gray has more.

Bitterly cold temperatures to linger for days

Hard freeze warnings remain in effect for much of the country with wind chill advisories stretching from Canada to Mexico. CNN's Jennifer Gray has more.