The heat you produce riding is significant. MOtorcycling - that's cold! But today only my feet got chilly on the commute in (and I think if I switch to my bigger shoes that will go away - these are really too small for thick socks and everything is scrunched and directly conducting the cold in), and it was 6 on the bank thermometer. I love riding faster than the temperature!
Hoping the ride back goes smoothly... but not as smooth as ice...