Fwiw, this my general sentiment on January (as things currently stand)
-The first week or so is very likely going to be warm & fairly wet/stormy. Need to be on the lookout for severe weather across the lower MS Valley & Gulf coast especially.
Once we get to/past Jan 10th ish, we should see more of a canonical El Nino/+PNA pattern return. We'll probably progressively step down from this super mild pattern to a seasonable one, that eventually becomes rather cool again as we move into mid-late January.
Imho, after this potential chance ~Dec 26-27th or so, our next best window is probably somewhere in/around the 3rd week of January (~ Jan 14-25 ish). There may very well be a storm or two that shows up between now & then, but the air masses earlier on in January are more liable to be stale, more temperate continental polar ones, capable of delivering snow primarily to climo favored areas of the Appalachian mountains, etc.
I also tentatively suspect we may see the -EPO also make a return sometime late in January and eventually evolve into a more classic -EPO/-PNA/SE ridge La Nina pattern in February (typical evolution for a winter like this).