Coldest morning ride for me so far, -4C with a slight breeze. I was warm all over except my toes which were cold but not really cold.
It was odd to ride in with a growing amount of light to the point that I didn't need my lights for the 2nd half of the ride (but kept them on so as to be seen). However, the effect of the time change will wear off and we'll be riding in pure darkness in a few weeks or so.