The growing season is about over. The sun is sinking over the southern horizon. The leaves are changing and the little forest animals are digging in. Might be an early and harsh winter the next 9 months, and the mosquitos are attacking like this is their last stand. Must be nearly August.
We'll be getting that in a month or so, usually the end of August is when we notice the changes coming. I've seen some trees turing already, there's always a few that do that this early, but we're only at the 46° or so. Watch the animals and wildlife, they can predict it better than any weatherman. One of our dogs was a great indicator of weather patterns.