I'm another Arizonan who thinks I might melt if I ride in the rain. I would not last for long in the Pacific NW, I'm sure.

I looked at the long-term forecast for El Tour de Tucson and though it's 10 days away and probably not an accurate forecast, looks like there is a chance of rain for that.... so I've got the same thing on my mind!

I've seen fenders at Performance Bike in Tucson recently, so maybe you can find some in Phoenix.

Good luck, and let us know how it goes.