Hello, Jennifer!
According to weather.com, the average temperatures for November in Walt Disney World is a high of 78 and a low of 58...what perfect weather!
Now, as you know, weather patterns bring variety to these norms, so be sure to check back as your trip gets closer so that you can really have a more accurate understanding of the weather systems that are headed Mickey's way at that time.
Your plan to attend BOTH
Mickey's Not-So-Scary Halloween Party AND Mickey's Very Merry Christmas Party is absolutely brilliant! The last date of the Halloween Party is November 2nd, whereas the first date of the Christmas party is November 9th. You'll get the best of both holidays! WOW!
Because you'll be attending a last party as well as a first party, ABSOLUTELY purchase your tickets in advance. These events in general often sell out, but the first and the last of anything draws in so many Guests who want to be first, or couldn't squeeze it in sooner, so you'll want to secure those tickets as soon as you can. Once they are gone, they're gone, but with careful planning, you can have tickets to BOTH!
Well done, Jennifer! Please send more questions as you think of them. I'd love to help you plan your One Trip / Two Holidays vacation!