I live on the west coast. It is 2am and 8 degree's Celsius outside at the moment. This is particularly mild for this time of year at night. I would expect temperatures at or below freezing at night. The high daytime temperature can reach 12-13 degree's. Other parts are much colder right now. Summer can be to hot but generally doesn't go higher that 30. By comparison Toronto right now is 2 degrees Celsius at 5am. As winter progresses I would expect colder temperatures in Toronto over Vancouver. The prairie provinces and northern areas can get extremely cold and lots of snow. There are a number of best practices for dressing for the weather. Wherever you end up. It is wise to ask the locals about how to dress for the elements.