Here in my place in Central-Eastern Germany the weather hadn't become particularly cold so far either. It has been less chilly than in November, but wetter. There were stretches of the weather being stormy, and also spring-like.
To add to the list of unusual phenomena regarding nature: When driving up to my aunt's today for a family Christmas gathering (she lives a few hours up North from us), we saw a rose bush with pink blooming roses in a village we passed through. Don't remember seeing a rose bush in full bloom at the end of December. Also, in the garden of the place where I grew up snowdrops are showing their tips already.