I like the movement system. The ability to change your state adds that bit of dexterity. It isn't that difficult to escape the rain. It should maybe speed up. Or dash towards you to keep things more interesting. Not sure how you did the levels but offseting the platforms would make it more interesting. Currently there is just a lot of platforms that make one big hole you can speed-fall through. It's cool but maybe it shouldn't be as frequent.
Cool idea. Good job!