Our opener is around Sept 15th also. It can be hot and muggy, but I just can't stand to sit in the house when I know I can be out hunting. Plus those doe that we need to thin out are about as easy to pattern as pie until they switch into the fall patterns. You can set your watch to when your going to see them. The only drawback is like Fieldmouse said, you can put your big old boy into a nocturnal pattern way before you even know it in late Sept.-early Oct. Plus's and minus's to it all. I know many guys that won't even go out till late Oct for that simple fact.