I do feel stupid for feeling this. India is currently on fire and also flooding iirc, by contrast here in 
it's not much hotter than recent years. I am lucky enough that we have a portable AC to run in the bedroom.
It's not the literal heat, our room is an ok temp honestly. But the heat seems to be breaking down my joints and bones, I feel like a decrepit corpse weighted with lead rn. This is the first time I'm feeling this too, didn't happen last year so my body is maybe decaying again.
I think it's heat exhaustion, I am making sure to drink and stuff but I just feel sluggish and sore, I am scarfing ibuprofen to little avail. Weh!
I'm probably almost as far north as you, but slightly more heat adapted since our weather gets pretty hot lately, and I would say just say get fans and stay super hydrated, and ofc dress light. I genuinely go from feeling hot and terrible to being a little bit cold, just from having a fan on me instead of dead air. also if its cooler outside you should probably try and get out, there will probably be a breeze too, go find a shady tree to sit under or put up a hammock or something.