The coldest temperature I ever experienced was in Gunnison, CO when we went on a family winter vacation to Crested Butte when I was about 13 years old. The low temperature the morning after we arrived there was -38F... and that was the actual air temperature, not wind chill.
Gunnison frequently records the nation's lowest temperature on any given day. It has to do with how the town is oriented in a relatively low spot between high mountain ranges. The cold air tends to settle in there.
That was intense cold!
