Dropping in real quick...
So far December temps are near normal for the MA. With the arctic front though, it's a pretty safe bet to finish the month with slightly below normal temps. Don't know if we'll get -2 like I predicted on the month, but we may get pretty close to that.
As far as snowfall, I think it's just been bad luck that we didn't get any for the metros while far interior N&W got a little this morning. In a stubborn La Nina, you need a perfect PNA+ ridge in December to get any snowfall. Despite the "epic" pattern, that was the missing piece.
Although I'm punting into the second week of January, I don't buy into the doom and gloom that if we don't get any snow in December during a nina, then the rest of the winter is DOA.
I think the nina is on its way out, and the atmosphere is already starting to decouple from the base nina state. We may actually end up with a backloaded winter. This is starting to look like a slightly warmer version of 1985-86 if my outlook continues on track.