-60º F
Loring AFB, northern Maine 96-98.
Don't know what it was with windchill, but it was damn cold, and there weren't very many trees around to block the wind, because it's all potato fields up there. We used to walk to Canada when we were bored, that's how close it was. I think they told us once that we had about 15 seconds before exposed skin would freeze and we'd get frostbite.