I'm in Edmonton, which sounds pretty similar to your climate. Except for those few -40 days I've found winter biking to be fairly comfortable once you get movin

I'm in Edmonton, which sounds pretty similar to your climate. Except for those few -40 days I've found winter biking to be fairly comfortable once you get moving. In my experience you don't want to be using a bike lane after heavy snow anyhow; they often don't get plowed. If you can take residential roads you're pretty safe (and studded tires really do make a HUGE difference). But yeah, you don't want to be on the road with cars going 80km/h - I wouldn't be comfortable doing that every day in the summer, either.