Agree 100%. Not enough of a root system to take the heat, although semi shaded areas could have a chance. Usually when I seed in the spring it's a temporary aesthetic fix and maybe to reduce erosion, but I pretty much count on re-doing it in the fall.
I understand Eskimo's desire to get some nice grass going, but I found some humor in wanting 6" or more of rain next week right after seeding. An internal conflict, lol.