Where the heck are you that it is -40F??? I’m looking at the national weather maps for the next 2 days and I don’t see temps anywhere that are that low. Maybe you confused the wind chill with the actual temp.
I'm not there now...I'll be there tomorrow night.It's a small town a couple of hundred miles north of Montreal and the official Canadian Weather Bureau forecast for that town for Thursday night/Friday morning is -39 Celsius....which translates out to -38F.Temps like that aren't common in that area but are far from unheard of.And no,it's not wind chill.