I was in Lake Louise and Jasper/Banff in Canada two weeks ago and we got down to -32c during the day and -39c at night with wind chill brought it down to -45c.
The first real snow and cold for Alberta and the Canadians were complaining of the cold!! 5mins outside and your face goes white and 10mins meant frost bite.
I got what is called frost nip on 4 toes which is still slightly painfull but getting better. -11 is cold here but lets not go lower!!