I can't imagine it's hotter up there than here, but you can rest assured that prolonged stressors will affect egg laying...but typically hours of day light affect laying the most. When I start to notice a shortage of eggs it can mean alot of different things...a hidden nest, an egg eating predator like a snake, ug, for some, maybe a molt, but I've never had one...so I don't know...but a total molt is brought on by conditions I think...mine loose some feathers here and there and replace them daily, never all at once. Right now I suspect that one or two of my game hens is laying in a hidden nest, but since I have a few layers I'm not too concerned. They won't announce their location either.