What's the weather like in America in July and August?

I'm in new york, and Columbia University is in Upper Manhattan. In new york in July and August, there is only one word: hot! The highest temperature here can reach 105 or so. About 40 degrees. It's just that the climate is dry and it's not easy to sweat. Walking on the road, I only feel that my skin is about to be cooked. But there are often thunderstorms in the afternoon.

As for Boston and Philadelphia ~ it's not too far from NY, it should be about the same.

I have never been anywhere else, so I can't help you.