Most interior-dwelling lifeforms speak of wind chill as if it is the actual temperature. It's not. It's the rate of cooling on exposed skin. But galumps galore will regale you with tales of Montreal's -40 winter temperatures.
For real wind chill you have to be outside, exposed to the wind. For a period of time. And after a certain number of time, your flesh will freeze. This isn't good!
Like when you are riding a bike to work. Against the wind. Predawn.
Then you gain an awareness for what is genuine wind chill exposure. (cold+ wind + time + exposed flesh)
And you certainly gain an appreciation of the the value of covering your extremities.
Today was the first day that real wind chill took effect for us. We headed north west, into the north wind. The wind chill was around -15C.
Not TOO cold, but certainly getting a lot closer than any time since last winter.
So, cover your exterior well, but don't over dress the core area. Leave the big protection for hands, head, neck and feet.
Cold weather cycling isn't for everyone, but anyone can do it if you dress properly.
Here's some links for winter cycling.
Here's a link on wind chill.