Well, actually, I live in the San Fernando Valley, which is a pretty hot place, and I don't run the air conditioner during the day while I'm at work. If it's in the 90's F in downtown Los Angeles, it'll often be over 100 F here in "The Valley." This fuel has been through years of high temperatures.

However, I do live in S. Calif, and I doubt very much that temperatures have been below 32 F (freezing in other words). I wonder if freezing temperatures would be more of an issue.

If nothing else, the S. Calif. dryness prevents the can from rusting.