In the Buffalo area we got our first snowfall two weeks ago (you might have seen it on the news :rolleyes: ) - wore my self-made 10 oz cotton duck.
A week later I was down in northwest Pennsylvania - the temperatures that day went from 28-55º F (-2 to 13º C). I wore my hemp RKilt, and was comfortable the whole day.
I will be be bringing wool back into the rotation shortly, though.