While the mother of all grinches melted it with surgical precision in time for Christmas morning, that was a bigger snow event region wide on 12/17  than we'd seen in quite some time in December.  I think that's the one that dropped 12-16 widespread in SNE with up to 3 feet in parts of NH into the southern tier of NY state (BGM).  What was your total for that event?  I know 2019 gave you a 20 spot roughly in the first few days of the month but my recollection is not much after the first week.  So from a snow perspective, 12/20 was better than most Decembers but the holiday melt down put a bitter taste in many mouths.  And the 12-16 in SNE was the only significant event of the month.  Nevertheless, temperature departure was a modest +1.3 at BOS.  Despite the negatives, I'd take that this year.