There once was a czar in Russia whose name was Rudolph the Great. He was standing in his house one day with his wife. He looked out the window and saw something happening.
He says to his wife,"Look honey. Its raining." She, being the obstinate type, responded,"I don't think so, dear. I think its snowing."
But Rudolph knew better. So he says to his wife,"Let's step outside and we'll find out." Lo and behold, they step outside and discover it was in fact rain.
And Rudolph turns to his wife and replies," I knew it was raining. Rudolph the Red knows rain, dear!"
"Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon."
-- Susan Ertz
The size of a raindrop is around 0.5 mm 2.5 mm, and they fall from the sky on average 21 feet per second.