Temp changes that big can be bad for your smokes if they happen quickly as your cigars expand and contract to the heat as well as humidity. If its through the corse of a day, I wouldn't worry about it but it would be better to try and place it in a cabinet near the ground where temps don't change much throughout the day. I do know that will defeat the purpose of the glass top, but thats only if you want primo conditions.

P.S. WELCOME!