mom2rtk -
Hello and welcome! I'm so glad you joined us and subscribed.
I hope we get some good info soon. If ever you tune into this thread and don't see any discussion of late breaking news happening when it seems like there should be some news, be sure to check Page 1, Post 1 - currently I have a lot of info from last year and other relevant links to threads about things that happen every Halloween season or that are Halloween-related...
but as soon as any new info comes in about this year, I will be adding that in to the first post! I realized last year (in the first Halloween superthread) that the current info was getting lost in the pages whenever someone was kind enough to post it, and we needed one spot to be able to find it so we could always access it easily.
We were all very excited - and shocked - when the actual dates for the Halloween season at DLR came in early this year. It was much, much earlier than expected and much earlier than the norm. Really, the DLR website usually doesn't put up the Halloween season dates until August, but they might trickle out a few months early. This year, they were up on the DLR website way in advance.
So now we are waiting on the exact dates of Mickey's Halloween Party. We
assume it will begin on Friday, September 30, and will be held every Friday in October, and probably also on Tuesdays, as it was last year. It's possible that it might not begin until October 7th, but that seems rather late to me.
It is quite possible we could see some high temperatures in October (that has been known to happen)...but we probably would not have much in the way of humidity like you experienced in Florida. In fact, October heat tends to be quite dry - hence, the infamous wildfires. It could also be rainy (last year it rained on a few Halloween party nights, as I recall) or just plain windy! October is a very tricky month to predict in SoCal.
I'm not a heat lover myself, so I would be happy with some nice, comfortable 70-degree days, or even in the 60's - it makes me feel more like it's actually Fall that way. I don't want to feel like it's Summer in October!
As for hotel deals...I totally understand about preferring to stay onsite. Even though some of the Good Neighbor hotels offer great deals, it's just not the same. I want to actually be on Disney property for the entire length of my stay. I want the full immersion from the second I get out of the car to the second I get back in the car. I want to go to sleep and wake up on Disney property. I want to look for hidden Mickeys in the carpeting and wallpaper!!

You just can't do that at a Good Neighbor!!
There have been decent DLR hotel deals (like, perhaps, as low as $149 or $159 per night for the PPH, and maybe $20 more than that for the DLH) in the past that have extended through Fall. Some of them even go as far as mid-December. Some of them have ended in October. Some of the deals have been through special PIN code offers, and some are available to the general public.
So it's not unheard of to see hotel deals for October. The only question is when and if there will be any again this year!