Environment Canada issued an extreme cold warning, with dangerously-cold temperatures hitting the southeast.
The temperature at 5 a.m. Wednesday was -32 C. Wind-chill values for the early morning are around -45.
"Extreme wind chill values in the -40 to -45 range continue for most of southern Saskatchewan this morning as a bitterly cold Arctic airmass settles over the region," said the warning. "Temperatures are expected to return to near seasonal values this weekend."
The extreme cold carries greater risk for young kids, the elderly, people with chronic illness, and people exposed to the elements.
"Watch for cold-related symptoms: shortness of breath, chest pain, muscle pain and weakness, numbness, and colour change in fingers and toes," continued the warning. "Cover up. Frostbite can develop within minutes on exposed skin, especially with wind chill."
Environment Canada added that it's too cold for your pet to stay outside if it's too cold for you to be outside.
"Extreme cold warnings are issued when very cold temperatures or wind chill creates an elevated risk to health such as frost bite and hypothermia."