Wind chill is an annoying statistic.
If you are outside and its below zero, you're going to cover as much of your exposed skin as possible so wind chill makes little difference.
I remember last year or the year before, the Milwaukee media was overstressing the rare occurance of -30 to-40 degree wind chills- big woop sissies. Try living in -40 degree weather for a few weeks in areas of Central Wisconsin where its very flat with few trees and the wind gusts at 20-30 mph all the time.