I tell you, these weather people are shady. Watch out for them. I've got that covered. Secondly, I'd have to disagree with good ol' Mort. Technically, when it rains, it snows.
Rain is nothing more than snow that melts as it falls to warm levels of the atmosphere.
Actually, it never pours. Downpours are a different story, though. So, I guess they could say when it rains, it downpours. Of course, we all know that isn't very accurate because we've all experienced the occasional light shower. So practically, Morton, when it rains, it's usually cloudy.