I have an old deck that I'm re-staining and I put on the first coat of oil-based solid stain on yesterday and it rained later that night, didn't seem to affect the finish too much, but now we're supposed to get rain for the next 4-5 days so I won't be able to do the second coat yet. The 6th day after will be warm and sunny so if I let it dry that day can I do the second coat after that? As I said it's an old deck which dries pretty quickly.
Depends on the brand of stain and what they suggest. They differ in how they cure.