I think this last summer that just happened was actually a cooler one for jume and July. We get super hot though in the summers normally though (like 85-100 isn't really uncommon.)
I'm honestly not sure. I do know the winter that they were pullets was absolutely brutally cold though. Summers before and after that winter though, I can't remember
I don't really care one way or another. They just are likely to lose some during winter out here. It's just never popped up before and now 3 of my hens that hatched last year have leghorn-esque combs