god help you if you paint storage area isnt air conditioned. if its not air conditions i dont even give it a month to survive. I have a field, and in my paint room i keep a dehumidifier running 24/7. While heat and cold have a strong effect on paint, humidity plays a huge factor. Anything over 50-60% humidity is pretty much unacceptable. You know how old paint outside looks when it gets all swollen??? well if your paint is stored in a humid area (RP especially, its not sealed) it will absorb the ambient moisture in the air, and cause your paint to swell like mad.
hope this helps your situation!!!
Dark 2.0 Customized LP Angel
Lockout Freeflow Cocker
Qualified A.I.R. and Angel Tech
Authorized WDP Dealer