What I've already noticed about the extreme heat in Arizona versus Massachusetts is that, in Arizona, if it's 105+ degrees for the day's high temperature, even at night it will usually be too oppressive to go for a climb.
But in Massachusetts, just based off of one day, the high of 92 degrees with 81% average humidity may be oppressive, but by around 4pm, it was in the high-to-mid 80s...and I totally could have tolerated a climb and I would have had 4h 22m before sunset. My camera equipment could have tolerated it as well. Tonight it will be in the 70s.
Just walked to the store about two hours ago and barely broke a sweat before the sun went down. This is obviously my subjective experience.
The takeaway is that, in Arizona, during the hottest parts of the summer, there are zero days where I would be willing or able to climb trees and film it without my cameras shutting down.
In Massachusetts, there appears to be a window, during daylight, where it is tolerable and, apparently, we're in a heat wave, so normally it's not this hot. So that says a lot.
With that in mind, I would say Arizona is worse. But this is my preliminary report. I'll update/revise this finding, or further substantiate it, a month from now.
Right now, my biggest hurdle for content creation is having to take a long trip to the trees. Gotta take the train and the bus. Or maybe just the bus, I hope. Haven't checked yet.
About 30-45 min each way to the wildlife preserve on public transportation. At least Massachusetts has great public transportation...unlike Arizona.
I'm not saying MA weather isn't oppressive right now, but at least there's an afternoon window that I can definitely work with.
Again, all of this is subjective.