You might be fine when walking at -31, but much below that a fall can be lethal. The snow is different at -40, stiffer and more slippery. Slip and knock your head, or simply roll an ankle, and the 300 yards to the next door will seem like miles. They have cancelled schools. They don't want the kids outside waiting for busses.
That's not right. At these temperatures even glare ice is quite grippy. The snow gets stiff. The only real downside si that the snow squeaks when you step on it. It can be sort of loud.
Tell that to my boots. The snow is rock solid. Thier treds dont cut in. Whereas a week ago i could walk, now i am sliding between biuldings. I walked about 500m between biuldings at -42 today. My boots were hardening. By the end it felt like walking in ski boots. Very slippery.
