Was stuck in Saskatoon once. Didn't go above 5 below zero F the whole week. Leave the beer outside too long and it would turn into an exploding slush bomb when you opened it...if it wasn't frozen solid.
Not that this is a plug for them but LL Bean sells Micro-fleece lined Dungarees and Chinos. BUY THEM. Couldn't recommend highly enough. Global Warming, 'ya know.