The Rain In Spain...
...falls mainly on the plain weekend.
(At least according to newly-published research by Arturo Sanchez-Lorenzo of the University of Barcelona as published in Geophysical Research Letters and described at New Scientist. Comments on the New Scientist page point to an article indicating that a similar pattern pertains in the U.S. (The Gist, Smithsonian, Feb. 4, 08 )
Neither weather report, though, rolls quite as trippingly off the tongue as good Professor 'enry 'iggins' original exercise in broad velar enunciation.