When we turn on our air, we keep it around 69-74 (70's during the day, but sometimes lower at night). We have a two story home and the air does not cool the upper level as well as the lower, so we tend to bump it lower to effectively cool the upper level. If it is warm, but not humid, I can handle not having the air on. Today is supposed to be in the mid-80's but the humidity is low, so the house stays comfortable. Our evening temps have been nice too, so we sleep with the windows open and a fan propped into the window to blow the cool outside air in. I love sleeping in a cool room. As soon as the humidity blows in around here, the air stays on in our household. We tend to run a dehumidifier all summer long, in our (unfinished) basement to help control the dampness.