Cold, -7C with a -13C windchill but the worst part of it was that it seemed that no matter what direction I was facing on my somewhat circular route, I was going into a headwind, it got rather nipple-y on the ride. My toes got really cold although it wasn't cold enough to think that frostbite was in the realm of possibility. I wore summer-weight full-fingered gloves, not realizing how cold it was and within a couple of kms, my fingers were really cold. However, I knew I had to tough it out and continue and strangely, they began to feel better and by the end of the ride, they were really red (I only knew this when I took off my gloves) and hot on my cold face so perhaps my blood flow adapts: I remember learning in grade school that the hands of an Inuit (Eskimo) are much tolerant of cold than southern folk and can have their hands wet from fishing, etc., in the winter and be perfectly fine. I also recently read in Cycling home from Siberia that Rob Lilwall, while riding across Tibet in -20C (-4F) weather, was passed by a Tibetan on a motorcycle who wasn't wearing gloves.