Before you get all "it's summer, of course, it's hot," know that the forecast temperatures are 10-15 degrees hotter than average for any time in the middle of the summer, per Accuweather. It's going to be hot. Advisories suggest you avoid strenuous physical exercise or manual labor, and if you have to do it, avoid doing it during the hottest parts of the day. Also, don't leave kids, pets, or friends in the car.
As the adult in your life will inevitably say, stay hydrated and go see a movie if you don't have air conditioning.