28 degrees (-2C) at the house this morning, with a layer of frost on just about everything except the road. Wore the thin Balaclava. It was noticeably warmer on the valley floor, about 35 degrees, and I had to open all of the zips on my jacket and pants (J&G uninsulated rain jacket and pants), and pull the balaclava off of my face. I was fine while moving but ROASTED at the few stoplights I encountered this morning. I quickly removed the outer layers when I got to the office, before locking my bike.