I've just started venturing out into the cold on my bike. Not that it is that cold here compared to some of you, but I'm a wuss, so I think high 30s or low 40s is plenty cold. I'm still getting the hang of the dressing properly for the rides, but this was my second ride in the last week and I was glad to get out there. I only did 6.5 miles, but until these last 2 rides, I hadn't been on my bike since late Sept, so I'm not going to push it.