[kiadimoondi]

I guess you could consider border states of Mexico as the same geographical region as the southwestern US, but those too. Anecdotal, but I've seen routine thermal throttling on macs in a border state with outdoor temperatures of 45, ambient indoor temperatures of 30-33, so you basically need either AC or some other external cooling system to manage more performance than a web browser and office apps.

[tomc1985]

I have heard anecdotal stories of the adhesive on rear-view mirrors of cars literally melting in the Phoenix sun (which can hit 120 F / 49 C or worse). So your story is not surprising at all, sadly