It's not the temperature that should be your first concern, it's the humidity that is the catalyst for a lot of cracking. Some balls have cores or core fillers that suck up that moisture causing swelling and then cracking.
--------------------
"A word to the wise ain't necessary -- it's the stupid ones that need the advice." Bill Cosby
"Never argue with an idiot. They bring you down to their level and beat you with experience."