Junkrat, Genji, and McCree's S/O getting cold and huddling next to them for warmth on a walk? (Since you asked for fall asks and it's chilly in the fall!)
Junkrat: Literally the best person to be with when it’s cold outside bc he’s just a big ball of heat?? The warmest boy. He also loves hugging you from behind and nuzzling your hair a bit, will also hold the umbrella when it rains or snows.
Genji: He’s made of metal how would he provide heat, you ask? His internal temperature regulator thing keeps him warm during the day but he needs clothes so he can stay warm and not overwork his internal workings. Not that best with transferring heat tho.
McCree: The second warmest boy, and will let you under his serape for when you’re sitting down outside. Also hugs you a lot and will get you like.. five million cute hats and scarfs so you stay warm.