Not a big deal at all and certainly not a harbinger of what the winter holds.
We hit 65 in 2009 two days before that first blizzard in December.
Anyway, this Monday it may hit the mid 50s. Enjoy it. Temps are going to fall then tank for the foreseeable future.
Though the after Christmas storm looks more promising right now, still watching for the 23rd-24th timeframe. That storm may slip out to sea, but still bears watching (it would definitely be snow as the after Christmas storm will be.)