Oh very interesting! This isn't (currently) too much of a concern for me as I live in Wales, and though it's ridiculously humid here there's not much risk of it hitting those temperatures inside my house the vast majority of the year. I shoot a lot of photographic film as well so I'm used to storing these sorts of media, though I probably won't be shoving the tapes in the fridge beside the film. Currently they sit in my windowless office.