MU's new director of Meteorology sort of agrees with you:
Looking ahead into next week and beyond, the global, atmospheric pattern simply doesn't support any cool air spilling into the eastern U.S. A deep trough oscillating between Alaska and the West Coast of the U.S. may be even try to expand and deepen later next week. If this happens and my current thinking is correct, we'll likely make at least one or two more runs at the 80-degree mark sometime between October 12-19. At some point during the last 10-12 days of the month, I suspect we'll finally see at least one or two cooler shots of air take aim at the Eastern U.S... but how much "staying power" these have remains to be seen. With abnormally warm ocean waters in the Gulf of Mexico and western Atlantic and a large area of unusually cold ocean waters in the Gulf of Alaska, it's going to make it difficult to get any prolonged periods of unseasonably chilly air into the East for the foreseeable future. This could certainly be a big factor (in addition to La Nina) over the winter season, as well...