Without actual winter gear, I simply don't see how its possible and reasonably safe. And I'm not talking snow and ice, but the impact to your mental state when your fingers are literally freezing off.
I've ridden down to about 45F and at ~70mph in the country, after an hour's ride with silk liners and full gauntlet's my fingers are really cold. Not tingly but close.
Dragging knee is for the track, and dragging tail is for the lot. --Kane Friesen
When you're in a car, you're watching a movie; when you're on a bike, you're in the movie. --Robert Pirsig
Identity theft is not Fun