How long will summer hang on in the midwestern, northeastern US?

The heat will not last much longer in the Northeastern US because a cold front will push through on Thursday and bring much needed cooler air!! This front will also keep Maria safe offshore. Here is a link to more info - https://www.accuweather.com/en/weather-news/how-long-will-summer-hang-on-in-the-midwestern-northeastern-us/70002808