One thing brought up by the seasonal community is all the guidance seems to be a bit too biased (at least right now) in insisting on a blow torch CONUS. Could be ENSO related on the seasonal guidance (think CFS and euro weeklies).
What has worked well is timing of features like CCKWs. This is why there was mention of a window late month into early December and it seems to be working out so far. I don't know if all vendors had this, but a good friend of mine brought this up to me.
If one assumes this continues to work, then we have a warm mid month maybe starting second week of December, and then flips cooler again maybe later in 3rd week of month and beyond.
The general theme is to take these weekly forecasts with a grain of dally more-so than normal.