Man thats cold as F*%$, how do you live in that. I thought England was bad, always long for sunnier warmer climes, but almost T shirt here compared to that frosty climate.
Back home? Like I mentioned, the humidity had a lot to do with it, along with the wind. -20C was perfect play outside weather. -30C was unpleasant, but bearable with the right clothes, and usually the schools only closed if it hit -40. Well, busses we're called off, and if you lived nearby you could go, but it was generally seen as a snow-day, even though it was too cold to snow.
I remember one day where the air was still enough that I was able to walk home in a t-shirt in -15C. Not here in Ottawa though. Here, -10C will freeze your bloody fingers off for some reason.
Edit:
Oh, not to mention that up North, snow pants were basic outdoor wear, not some specialized extreme sport garment that cost $200 like down here. Also, it was standard for every vehicle to come equipped with a block heater, so your car won't be dead when you try to start it in the morning. Since moving, most people I've spoken with didn't even know that was a thing.