The weather has been at it's coldest here in Northern Alabama, coldest it's been in all of 2010 so fa (not much of an achievement a few days in). Rode when it was 20ºF out and a bit of wind was sneaking under my helmet stinging my neck. Which got me thinking about windchill.

At 20ºF riding at 60mph the windchill would make it feel like it's -4ºF! What is worth noting is this chart from NWS/NOAA is the facts about when frostbite may occur. Something to keep in mind in order to keep your fingers.