Seems like many Americans near the border have this perception as Canada being the 'source' of their cold weather.
In reality the bulk of the nastiest storms here in Ontario come over the lakes from northern Michigan, which is, yes, north of us. Look on a map, most of the heavily populated areas of Canada are as far south as northern California. The parts that are north of the 49th are much less populated.
Yes, periodically there is a nasty cold front coming down from Hudson's bay, but the prevailing winds and weather patterns are west to east. So most of our weather blows over from the midwest U.S.
The really nasty awful cold weather last year for example, hit the U.S. midwest harder and nastier first.