It was 71° yesterday. Very odd. It's triggering some early flowering, but not like last year oddities, that's for sure. But I remember a Christmas Day (in Austin, while growing up) that was 80°F and in coastal GA, we had very mild winter days, too.
There have been plenty of falls over the last two decades, too, where we haven't experienced a hard frost (much less freeze) by the time we leave for winter break.
The Japanese cherries keep flushing out! At this rate, it'll be interesting to see how many flower buds are left for spring.
At the Garden (where I work), our director spotted a Hepatica acutiloba in flower (it's normally one of the first flowers in spring, but December?)
Here's a post from several years ago, remarking on late February flowers.