We are under a heat advisory...again...still. I didn't volunteer today since my car's air conditioner is iffy. Getting into a car that has been sitting on the asphalt in a parking lot is bad enough, but the thought of no reliable air conditioner makes me a wimp.
The "weather station" we have said it is 99 degrees outside and 79 degrees inside. We'll turn on the air conditioner when it's 80 degrees inside. We have the fans going and it really isn't unpleasant. The windows are treated to keep rays out. The walls are 2/6 and insulated. The attic is insulated.