It's today! The annual Day the Heat Left Summer in Charlotte! Once a year about this time, you will have a single day in which the weather goes from summer-normal - - washed out skies, temperatures in the high 90's, high humidity - - to something far nicer - - clear blue skies without a single cloud, temperature down in the 80's, low humidity. It's startling how quickly the change occurs. Oh, this doesn't mean that summer is over, or that there won't be hot/humid periods again - - but the corner has been turned.