I don't know much about cats, but I suspect they, like some humans, like the heat. Supposedly, their fur keeps them cool in summer and warm in winter. Dogs will usually look for the shade, but still don't seem to mind being outdoors when it's very hot.
if your cat looks like that she prob shedded her thick undercoat, the rest of her fur just helps as a body temp regulator, plus she'll groom herself which works the same way sweat on humans does. cats are smart. if you're super worried about her overheating put a bowl of water outside with some ice cubes in it
I had a cat who'd lay in the window behind the blinds in the full sun - all summer long. That window reached well into the 100's. i always thought she'd cook herself in there.
Cats love heat and will actively seek it out (heater vents, sunny spots, etc,.) I Have a cat who, in the winter and spring, will find a sunny spot on the floor and then demand that I put a chair there for him. not only that, but I must constantly move the chair to follow the sun (he's quite vocal on that one). Maybe i've seen too many science fiction movies, but sometimes i think our feline overlords are reptiles in disguise.
Thanks. She found my wife about 6 years ago. She was a stray who was starving and flea bitten and much of her fur was missing. She took KiKi to the vet...she was fine other than malnourished. She brought her home and put her in the garage and kept feeding her. About 10 days later we brought her in and introduced her to our blind dog.