Hi Marcy! There is truly nothing more magical then Disney at Christmas with all the extra decorations and lights up around the property. Over the last few years I have always booked a trip there to experience some of these wonderful things.
November is certainly a transition month. The weather is some of the best all year with the highs averaging in the high 70's and lows in the low 50's. It is good to pack layers for the cooler mornings and evenings when you are out in the parks. This is also a very low rainfall month and the humidity drops off greatly. This is definitely one of my favorite months to visit.
The holiday decorations do start to pop up in the parks and you will definitely find them in the Magic Kingdom. The fun
Mickey's Very Merry Christmas Party is held on select nights all through November and December. It is an extra event party ticket but one that I often purchase so I can experience snow on Main Street and warm cookies and cocoa.
Other parks will begin with their large Christmas trees popping up over night. The resorts come next and by Thanksgiving week most things will be decorated. The big resort events such as the chocolate carrousel at the Beach Club or the life size gingerbread house at the Grand Floridian are usually up by the end of the month too.
Besides all of the fun and great weather in November you will also find smaller crowds during this month with the exception of Thanksgiving week. You will have a wonderful Disney visit at this time of year!