it depends on where in Canada...it can be as cold as -40 in the North or on the Prairies, or as warm as +5 in BC. Generally, the closer you are to the ocean and the more south you are, the warmer it'll be.
In Saskatchewan, we get at least a week of -40 degrees Celsius every winter, which sometimes feels colder because of the windchill. It gets hot (up to +40 degrees) in the summer, though!
Depends on where in Canada you happen to be. In some places, 50 degrees below zero for months at a time. On the West Coast, only a few degrees below freezing in the middle of winter, for a short spell only.
In the maritimes.. it can drop to temperatures of -35 degrees celcius(-31F).. plus the windchill. The windchill is the combination of windspeed and temperature and how the body perceives it.. which can be a killer lol.. but this only lasts a couple weeks in the winter.. but temperatures can reach +35C(+95F) in the summer months.. we learn to deal with it.. i love having all four seasons rather than just hot hot weather all year round.. i love the winter!