The storage container was more sarcasm than anything
Here the biggest concern is the hot to cold. It's not unheard of to hit -40 (which is the same in Farenheit as in Celcius) for a day or two in the winter, and the freezes are good and solid because of the length of them - I'm told that's what causes the aligatoring of the finish. That machine's in the town I live in. It's colder here than in the city by a few degrees on average too.