The first real taste of the colder winter temperatures usually occurs in November. January and early February are the coldest months of the year, and the overnight lows can reach -40C. Temperatures can vary considerably in winter, depending if the climate comes from the Pacific Ocean or Alaska. Most of the colder days are usually sunny. During most of December and early January the days are short. Spring can be quite unpredictable, although most of the winter snow has usually melted by the beginning of April.
All buildings have central heating.
It is not necessary to wear heavy clothing indoors, even during the winter. Most people only wear heavy overcoats and shoes when going outdoors. You should prepare for winter by purchasing in September or October a good winter jacket, gloves, something to cover your head, and warm boots. Be sure to wear a hat that covers your ears on those cold days. You may even consider wearing a scarf to cover your face.