One of my most memorable and fun rides was during a huge rainstorm a couple years ago. I was just riding 15 miles on neighborhood roads so traffic was not an issue. This was inch an hour type rain. No ligthening, so I just decided I'm soaked, might as well just keep riding. It rained for about an hour, poured, but I loved it. At first I worried about hydroplaning but the bike handled fine, I had some Kenda's with grooves so that helped. The experience was like swimming, that's basically what it felt like, I did get some very odd looks from the few drivers that passed by. I'd love to do it again, but that was with my old bike, and I wouldn't want to get my current bike wet.