Has anyone been having the same situation where the second floor is over 80 degrees even though the A/C is running during the day? In the evening, the floor finally cools down to the set temperature on the A/C. I am wondering if the extreme temperatures outside during the day (I saw it was 98-100 degrees today) makes it very difficult for the second floor to cool down. The main floor has no problems staying cool (probably because its sandwiched between the second floor and the basement)... Any ideas as to why the second floor is extremely warm during the day even when the A/C is running? Thanks to all who respond.