So what is new to you is the extreme's in temperature that are repeating day after day for longer than they have seemed to in other summers and you want to know if this is an effect of Global warming?
Weather is what is happening today and Climate is the trends during the same season year after year. One day or even a season of records will not indicate the climate. But as those records accumulate they may describe a shift in the climate.
Of some importance to you is that the extreme weather focuses your attention as it has for others in the past who have noticed that sometimes events far away like volcanoes erupting on the other side of the world can have an effect on your local weather.
This site https://www.wunderground.com/blog/JeffMasters/the-northeast-heatwave
explains that a high pressure area has caused no clouds to form, increasing sunlight and the amount of heat. This pattern of temperatures is less than 1 percentile of what is typical. Therefore this is unusually hot weather.
However the most we can say is that this is "evidence" of global warming. In 20 years with lots more data they may describe this same "evidence" as a "record" or "proof" of warming.