Probably the most awesome line about cleansing which is a process that requires being alone. It goes along with precipitation and how rain in movies and books and anything in art usually says something about renewal and starting over again.
I think that rain is in so many of his songs because most of his songs are about breaking up and figuring out how to move on.
Get past the hilarious (slash weird) puppet-playing. Song starts at 1:27. I prefer this solo acoustic version instead of the one where he plays with the band.