We New Englanders have a favorite saying about the weather, if you wait a minute it will change. with that being said, layers are the way to go. It could be warm enough to wear shorts & a tee-shirt or cool enough to require long pants and a jacket. Pack some midweight pants, long-sleeved t-shirt, pull over or zip front hooded sweatshirt and a light waterproof windbreaker, and pack some shorts and short sleeved t-shirts, a pair of lightweight gloves and a hat might not be a bad idea either