I woke up very early (4:00am) to my little 7lb dog, Phoebe, staring at me wanting to go outside. She failed to do her "business" at the regular scheduled time, just before bed. Since it was 4am and most of the world is still asleep at that hour I figured it would be fine to run outside in my nightie. Huge mistake. We trek down the two flights of stairs across the parking lot over to the grass and nearly froze. I stood there shivering, teeth chattering waiting for Phoebe to do her thing. The cold air was shouting loudly that end of summer is near.
The official sign for me is when the Ice Cream stand around the corner from me closes up for the winter. This is a photo of their sign.