I live in upstate NY...so get hot summers and freezing winters. I have an old fashioned wardrobe cabinet(the kind they used to use instead of closets)..in my garage...my overflow is on shelves inside the wardrobe, out in the garage. The garage does stay fairly cool, so nothing gets really hot, but in the winter it gets well below 0 out there...but it's just fine. I think humidity is the worst enemy of any fabric...if you live in a humid area..and insects..and rodents..but temps I don't see as the problem...fabric (cotton), needs what we need..air..low humidity, no rodents or insects. I am wondering if the people that had rotted out fabric after storage had high humidity before it was stored? Even those plastic tubs won't keep humidity out...that's why people that store food for future disasters use silicone caulk around the edges..to keep the humidity out..it's the humidity..not the temps..I think.