Haha, rain huh, it's a wonderful thing :dblthumb2: try being a full time detailer in Seattle :bash: and don't forget it's dark at about 4pm right now :doh:
Seriously though, do you have questions about how to work in the rain, how to get customers in the rain? How to convince people to still do it this time of year? I've found lots of ways to work around it since I went full time in Seattle 6 years ago, the best by far is to put away some of that money from the busier time of year, lucky for you, your rainy season is only a few weeks to a couple months long. Unfortunately though, it's too late to put money aside.
I've used pop-up tents in the past, but now I just find customers that either have garages or can drop it off at my place where I've got a garage (that's been huge the last couple years). I also do a lot of interiors and basic washes this time of year to keep money coming in. For people that none of those work, I try to get them done on the nicer days. There's a lot of schedule juggling this time of year for me, but with practice it gets easier (like anything else).