Coldest I’ve been was near Turin, on a skiing trip. Got out of the airport to a crystal blue sky, and air so cold it was freezing the moisture in to tiny, rainbow crystals in the air. Stunning.
First day up the hill, at Sauze d’Oulx if you know it, and it was somewhere around -25c, with a strong wind. Windchill must have taken it to around -35c or. Bitterly cold. Utterly brilliant!