The final weekend of meteorological summer will feel like fall in the Northeast, as a more refreshing air mass will build into the region in the wake of strong thunderstorms, say AccuWeather forecasters. The thunderstorms ushering in the change in the weather pattern turned deadly on Thursday night, causing wind damage and knocking out power for more than 600,000 in the Midwest and upper Ohio Valley. A noticeable change in temperature and humidity will make for a refreshing final weekend of Augu