Anne and I decided we'd had enough of indoors, and so we bravely went out "for a walk" in the snow. We rounded a corner on Bloor and I said, "Look at the thermometer!" --It was reading -20 C. And that was in the middle of the (relatively warmer) business district, not out in the suburbs where it was probably even nippier..
Prepared me for a visit some years later to Montana relatives where the same -20 C prevailed, but UA doesn't fly there--not yet, anyway.