Getty Images Us Weekly has affiliate partnerships. We receive compensation when you click on a link and make a purchase. Learn more! It's sweater season! Well, not fully sweater season. We're all about cozying up at this time of year, but we don't want to be too cozy quite yet. Fall is a transitional season and so are the temps! Anything too light and we'll be chilly, but anything too heavy and we'll start sweating through.