An extreme wind chill warning has been issued for parts of eastern Alberta, as cold Arctic air meets winds of 20 to 30 km/h.
Temperatures are expected to drop to -45 C with the chill, according to Environment Canada.
"Winds will diminish by the early afternoon however temperatures will remain below normal tonight," said a release by the agency.
During extreme wind chill frostbite on skin may occur in less than five minutes, Environment Canada warns.
The warning was issued for the following regions:
Brooks - Strathmore - Vulcan
Cypress Hills Provincial Park - Foremost
Drumheller - Three Hills
Hanna - Coronation - Oyen
Lethbridge - Taber - Milk River
Lloydminster - Wainwright - Vermilion - Provost
Medicine Hat - Bow Island - Suffield
Red Deer - Ponoka - Innisfail - Stettler
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