Finished December 2015 as the second warmest all time.
Now I'm not sure how important keeping accurate daily temps were back in 1889, but we'll have to assume that due dilligence was done, and Dec 1889 is still the record warmest.
On a side note I looked at the top ten warmest Decembers, and total snowfall for those seasons.
And although the sample size is small, most featured >25" snowfall for the season.
So it would be a kick in the you know what, if Jeff V., busted high on his forecast. Lol
We'll see.