Whats the name of the song that goes, "Why does it always rain on April first?" (old country song)?

Heard a song on xm radio, willies place to be exact, but i didn't right the name of the song down. I goggled the lyrics but couldn't find anything so i figured I'd as on here. like i said, part of the lyric states, "Why does it always rain on April first" all i know is that its a play on words and hes talking about a girl named April. Any help would be nice. Thanks