These incredible pictures show the freezing weather experienced in various locations across the northern United States.
Experts are warning people to be wary of hypothermia and frostbite from the arctic blast that's gripping a large swath from the Midwest to the Northeast.
Temperatures - without the wind chill factored in - dipped to -32°F on Thursday morning in Watertown, New York.
In the town of Hamburg, New York on Lake Erie, freezing temperatures have caused part of the lake to freeze and ice to form around trees and benches.
Remarkable footage from Frances, Ontario, Canada shows a woman throwing a mug of water over her head which instantly freezes mid-air.