What is the definition of the Fall Season in the South?

So, here it is October 4th and it is 91 degrees in Nashville. I can't help but wonder when fall will begin down here and what it will be like. Starting next week the temperature will drop into the low to mid 80's. Fall is my favorite season, but I don't think it will compare in color or weather to Michigan's fall season. I am not complaining that it is still beautiful weather here, but I need to get used to the idea that fall and winter will be so different for me. I have been ready to pull out my sweaters and sweatshirts for a month now!

HAPPY BIRTHDAY, MOM!!!