We have already have several days with freezing temps and it's hardly into January. Last Summer, we had heat indexes reach 105+ very often. We do get some crazy temperature swings. Florida can go from 84 and muggy to 31 degrees in a day.We also have a moisture issue that causes trusses n such to expand or shrink, depending on the weather. With the number of cracked seams I have, had it been foundation, I would see multiple cracks in the floor (We just refloored most of our house. I have no verticle cracks on interior walls and no bricks have separated on the exterior. We had a rather long and quite hot Summer and are now having quite a chilly Fall and Winter.