global warming vs. labor day & end of summer

if the world is so warm and there's so much more global warmness in the changing climate globally and....well, how come we still shut down the beaches and pools on labor day?! Maybe we should keep 'em open longer b/c it's so gosh darne...d warm so gosh darned longer...gosh darnit. anybody else for pushing the date to extend summer?!?! :-)