4710 on my second attempt. Good game. I like how rain can actually make flying harder. Nice little detail. Also, I recognized the music instantly
Maybe you could add a time limit, because for now there's nothing stopping the player from going slowly from cloud to cloud and getting unlimited score. Some sprites for kicking would also be nice. And to make kicking more satisfying, a new type of cloud could be added, one that flies straight for a moment after being kicked, and destroys other clouds it touches. Make it always spawn on a random side of a storm cloud, and you have an elegant way of dealing with them, too