It won't be a surprise to anybody, that some places in Canada have colder than any other place on earth temperatures. However, it might be a surprise. That Canada has a very diverse climate. The climate varies from temperate on the west coast of British Columbia to a subarctic climate in the north.
Extreme northern Canada can have snow for most of the year with a Polar climate. Landlocked areas tend to have a warm summer continental climate zone with the exception of Southwestern Ontario which has a hot summer humid continental climate. Temperature extremes in Canada range from 45.0 °C in Midale and Yellow Grass, Saskatchewan on July 5, 1937 to −63.0 °C (−81.4 °F) in Snag, Yukon on Monday, February 3, 1947.
Generally, most of populated Canada enjoy four distinct seasons. Daytime summer temperatures can rise to 35°C and higher, while lows of -25°C are not uncommon in winter.
Average daily maximum and minimum temperatures for selected cities in Canada:
Wikipedia - https://en.wikipedia.org/wiki/Geography_of_Canada#Climate