Some might say it's too early to put the Halloween stuff out, but I say we need all the time we can get. If it weren't for Halloween the stores would start playing Mariah Carey as soon as the back-to-school sales ended.
Good thing that Nightmare Before Christmas is my kids favorite Christmas movie, so we don't really have to redecorate between Halloween and Christmas.
We generally start decorating for Halloween after the 4th of July, swap a little bit out in November, and don't take most of it down until January. Plus, some of it stays up year round, like the Casper-holding-two-candles lamp that my wife had coveted since she was 9 that we found in a thrift shop. That shit stays up permanently and just gets a cat-sized Santa hat added for Christmas