Fall in Staunton

As the weather forecast shows a chance of rain showers giving way to mostly cloudy skies and warmer temperatures later in the week, it feels like fall is finally settling in. With tonight's forecast calling for a high of 72° and tomorrow's forecast looking sunny with a high of 77°, I'm wondering what's the first sign that fall has really arrived in our town - is it the changing leaves, the cooler mornings, or something else entirely?