Except in Vancouver, where it is cold and wet, Canada is very cold in winter. I did some flight training at Portage la Prairie (where?) and we used to stop flying at 20 below because the hoods would warp and wouldn't shut. We operated off frozen snow with no prob at those temps, and had some good fine wx. Min temp was minus 70 farenheit one morning, as the Arctic front dipped down over Manitoba. Give my love to the Assineboine hotel.
Dick W