So wind chill DOES matter. For real! All these years, since bus stop forecasts on the evening news weather reports to just now, I was thinking that wind chill was just a matter of comfort; how long you could 'chill' in the wind, so to speak. But naaaaah son, it's real in the field (AND at the bus stop). It turns out that extreme cold, in concert with wind chill, can freeze uncovered extremities within MINUTES. Introducing... frostbite!
Yeah, I used the word 'concert' - but think more 'lose your fist' than pumping your fist to 'Lose Yourself' if you find yourself in the middle of a windy winter in Detroit without gloves and gear. Just saying.
Frostbite is a serious condition. Cold temperatures can cause the skin and tissue to start freezing, killing the cells. But, wind-chill can drastically change how long you'll last.
- Tech Insider