Well i also have a basement but I wilt if I let my house get to 80 degrees. It will get that in my living room when the sun is shinning but not in the kitchen where I would like these little ones to grow.
I have a swamp cooler in the summer that goes in when the temp outside gets in the 80's. Did I mention I don't like the heat much That thing goes on in the morning when it starts get around 75.