Haha! Probably the easiest thing to do.
Try to get some interior work done. Say you have a job in a couple days. Call them up, explain that it would really help free up your schedule if you could take care of the inside only today. Yeah it might mean 2 trips instead of one, but then when the sun comes out and you have only 1/2 the work left it's more than worth it. A lot of people might be sitting around the house just like you anyways, so they're happy for you to get a jump on the job.
Or you could just be a complete savage. Be so freaking good and so freaking busy that you can't wait until it rains and you can take a day off. But someone will call and schedule when it's raining anyways, because you're just so much better than anyone else, and it's the only day they can get you for the next month.