If there is a likelyhood of rain, I generally take a different bike and have my waterproof Orlieb pannier bags. The forecast called for no rain, so I didn't prepare for that possibility. As it turned out, it rained most of the day, including my ride home. Home isn't as bad though, as I have plenty of dry things to change into there.

My backpack absorbed the brunt of the moisture, so my work clothes weren't completely drenched. The innermost parts where they had been folded up were still dry. When I pulled them out they had these weird patterns of wet spots on them, like some sort of business-casual Rorschach test. By the afternoon the clothes I was wearing had mostly drip-dried.