Finally got in a commute this week after a holiday on Monday and then two days of icy weather. Temps close to my record low, in mid-teens F, but I was dressed perfectly and wasn't too cold or too warm. My water bottle froze solid, which is a sure sign that temps dipped below 20 F. If the forecast holds and I ride tomorrow, I should set a new record low. We've already had more days with temps in the teens or lower than any winter since I started commuting 7 years ago, and winter still has a long way to go.