When I was growing up in northern Maine, I remember going out to play when it was -50F. In order to get that cold, there couldn't be any kind of wind or breeze.
Of course, that was before I moved to Iowa.
Minus 10
and a "slight" 30 MPH breeze is something to behold- but not for long.
Still, the coldest I ever felt was in Pusan/Busan Korea in the winter. That was flat-out nasty.