Well, the forecast says later. Riding in the rain is no big deal, really -- when I was cycle-commuting I did it all the time. It helps to have fenders, though, and the chain gets dirty much more quickly (unless you use wax-based lubricants, but those have to be applied more often) -- oh, and neoprene boots to protect the shoes.
I've leathered up from head to toe!
Raining in Auburn now, lightly.