There cannot ever be a LAST WORD on Canadian winters. As Raymapleleaf says it gets verrry, verrry cold in most part of the country in winter. So many people come here believing they know all about how cold it's going to be, but, believe me, most do not. I recall going to work at 7am in the UK during the winter. It was often cold but generally by midday it had warmed up to plus side of freezing. In Canada one goes out at 7am and it's -15C and it might warm up to -10 by midday if the sun comes out. If it doesn't then no warmup takes place.
The cold weather is, without a doubt, the most discussed thread in expats' websites. People *****, whine, moan about it and that serves no purpose. For those already here who hate it, get used to it. It's going to come around every November and will be here until March. For those contemplating emigrating to Canada please get it into your heads that, except for the west coast, it is going to be bloody cold in Canada from November until March. Not quite cold, not really cold, not very cold BUT very, very f*****g cold, day in and day out.