Originally Posted by
Hypno Toad
I am a windchill-denier ... I don't believe in windchill.
First, if you put a glass of water out on a 35F day with 20 mph winds - the windchill is 11F, but that water will never freeze since the temp is still above freezing.
Windchill calculations are based bare skin ... I don't expect you're biking with bare skin when windchill is applicable (temps below 40F).
Lastly, what little bare skin you have (face) is typically warmed enough by the core to not suffer. Reference: this was a 90-minute ride at -28F (Jan 30, 2019 in Minneapolis) - goggles came off after 30 minutes because the fogged over. I was a comfortable with bare skin because my core was hot (this great training ride for my
Arrowhead 135 goal)
Wind chill is 100% a human factor and calculation. Splitting hairs but... If that water you put outside was 70F, it would reach 35 faster in that wind compared to no wind so there is a wind factor but that's not a wind chill calculation. That faster cooling rate is what your body feels with a wind. Insulate that cup and it cools down slower, same as you wearing a jacket. It is all related.