72-75, I live in mesa where the summer months get in the triple digits everyday.. speculated to be 110 degrees today T_T
Wouldn't mind those temps at all, as long as it wasn't too humid!
Its a very dry heat. but during late june all throughout july it usually goes in triple digits easy. 110+ everyday, its not pleasant to live in
I have only one room with A/C, and it's the study, not the BR. The worst of HHH here on Long Island is mid-afternoon, so the study becomes the "Refuge" for a few hours then--a desk to work at and a sofa to sit or lie (nap, actually) on.
A powerful whole-house exhaust fan cools things down a bit after sunset, and the BR is sleepable with a window fan, and nights that are really uncomfortable are rare. One benefit of the Northeast over the South is that although we get weather like the South on and off in the summer, we also get bursts of frontal passage Canadian air from time to time that are blissfully pleasant spells, even in the midst of August.
However, although I keep the Refuge A/C set at 73 or 74, if it were not for the horrendous cost of electricity, I'd prefer to keep the room at about 62, which is what I keep the house at all winter, and find perfectly comfortable. It's easy to get warm--just add some clothes; it's difficult beyond a certain point to get cool--I'm sitting in the un-A/C'd computer room, not the study, and although I'm wearing shoes and sox, the rest of my clothing is a thin film of sweat--and while today's high is only predicted to be about 87, we're not there yet!
No A/C at the moment

went out on Sunday been waiting for parts all week. Guys working on it now though. It has been pretty rough all week with temps at 93-94 and 90-100% humidity all week this week we been praying for rain to cool things off.
Normally 74 though with ceiling fans running all the time.
I keep it at 80 during the day (when not home) then about an hour before I come home, the thermostat automatically lowers it to 78. Then when I get home I bump it down to 77. I shut the bedroom door and keep the blinds closed and by the time I go to bed it is a cozy 73. The house is insulated really well because we have been running at 95 degrees with about 85% humidity.
A programmable thermostat has really been a lifesaver in this climate.