Great news; keep going, Beth! Sounds very possible that we'll welcome you to the Northwest TE riders sometime soon!
I'd usually recommend that you pack your rain gear, however I spent most of my recent AIDS ride from NYC to D.C. using my native NY'er colorful language to describe the inclement weather all along the route! (you should still pack your rain gear though)
I returned home to spectacular Seattle weather...ahhhh!
Tailwinds!
Mary