50 degrees (farenhight (however you spell that)) is where I start putting on jackets and coats. hot is about 95, and too hot is 105.(thats why almost everyone has a pool ) @Dnas: I lived in Indiana for a year or two, the wheather is pretty bad during the rainy season, but the winter I think makes up for it with the snow. One time we had a drift against the house about 6 or 7 feet tall which we made into a fort and had snowball fights in and around.