My coldest ride was an April trip to the UP about 20 years ago. Everything was ok on the way up, but on the way down it snowed. I traveled from Bessemer, MI to the bridge. I was so cold I could barely get off the bike. When I sat in the hot tub it was like fire as my body was sensing the extreme difference. It took me 1 hour to just get to the point where I wasn't cold, but cool. It didn't help that there was a cool mist the whole trip as well.