We went the first week of November last year. Dopey Sharon was right on the money with the exception of MK. MK closed at 7 pm for us.
The weather was fantastic. It was in the 80s during the day. When the sun went down, we didn't feel the need for a jacket. We did have 2 days with rain. One day, the day we planned not to go to the parks, it rained for 2 hours or so. We watched it from Wilderness Lodge (plenty of stuff to do there inside!). The other day, it rained for 30 min while we were in the park. No big deal, at least not for us.
Enjoy your trip! The crowds were great that week. The longest we waited for anything was 30 min for the safari in AK. Most lines were 20 min or less.