That's -22 F, for you metrically, challenged folk. I must have overdressed, probably the toque crammed under my helmet; I was sweating when I got to work.
I even shaved a couple km off my commute by scooting across a frozen lake.
Last winter, I did -30C natural, -40C (that's -40F, for you metrically challenged folk) in the wind, but we haven't had a day that cold here... yet.
It's funny, this morning I was going to take the bus and pining for a nice, warm car so I could wussypants my way in. Instead, biking what took was an shitty, anxiety-filled morning and turned it into an awesome day.
Vive la bicyclette!