[codingdave]

For Americans... yes, they do. With a few exceptions, Canada is north of the USA. So your average person who is not living in the northern US is perfectly correct in assuming that Canadians live in colder climate than they do.

For those Americans who do live in the northernmost tier of US states, Canada's climate is more comparable to their homes. But most Americans also think people in those states are living in the Arctic north.