U.S. Fall Forecast: Will we still see Summer Weather for the next three months?

The summer of 2016 was dominated by widespread heat across the United States particularly east of the Mississippi. The hot weather brought a distinct change from the milder patterns of the previous few years. As summer comes to an end, we take a look at the next three months to see what to expect in the upcoming fall season. Will late summer weather linger well into the fall season? Or will we see crisp autumn air take hold early? And where do we expect to see the most active fall storm track? The Weather Network’s 2016 Fall Forecast, which covers the months of September, October, and November we see near to above normal temperatures are expected to dominate the fall season across the entire country.
So you still have some time before you’ll need to put away the shorts and sunscreen. Regions east of the Mississippi and west of the Rockies are the most likely to see summer-like temperatures lingering well into the season, while the middle of the country should see more frequent periods of cooler weather as the season progresses, leading to overall temperatures near normal. So there will certainly be exceptions to the overall pattern, and shots of cooler autumn weather will take hold from time to time even in regions that are largely above normal. We also can’t rule out an early taste of winter late in the season, as the potential for cold outbreaks should increase later in October and November.
The precipitation pattern we have forecast for this fall highlights the potential for typically active storm tracks through the heartland from the Plains and into the Great Lakes. This should lead to near normal precipitation for much of the center of the country, and even above normal precipitation across the northern Plains.

The early fall also brings the peak of the Atlantic Hurricane season which is expected to be remain more active than normal after many years of quiet tropical weather. The pattern this year continues to favor development in the western Atlantic as we move into the fall, which increases the chances of additional U.S. landfalls.

 https://www.theweathernetwork.com/us/news/articles/us-weather/2016-fall-forecast-winter-preview/72001