In general, according to statistics, Eureka in Nunavut is the coldest place in Canada, with average temperatures hovering around −19.7 °C or −3 °F for the year. Eureka is home to a small group of meteorologists who live at the weather station there. They experience 24 hours of darkness a day between October and February, then contrastingly, the sun never sets between March and September.
Ref: https://tripsupport.ca/blog/