My coldest commute yet. 14F (-10C), and I managed to over-dress for it. I thought if anything I'd be a bit under-dressed, but no, I got hot. Silk long underwear and fleece, plus thin jacket, gloves, balaclava, turtle fur around neck, and ski goggles to complete my hard-core look.

Jacket had a layer of condensation inside when I arrived at work. Big toes were cold but not uncomfortably so. Was wearing running shoes and normal socks.