Kitten wants to play in the rain with two friends, but he has to clean his room to find his rain gear, which includes, boots, hat, jacket. His friends check in on him and help him clean, they even find a sail boat that they can play with in the puddles. The book is NOT the obvious Three Kittens, Rainy-Day Kitten, etc. . . been searching for years now. I think it was published sometime between 1940s-1990s, And I want to say it had a beige/yellow/tan cover with a spot illustration.