I don’t think that applies to Europe in general. Here in Southern Germany, we had a pretty brutal coldsnap back in November, but that was followed up by summer weather in December and then mild winter in January, February.

One thing, that was pretty universal across the globe for the past months, is more precipitation, because the oceans are so hot right now and therefore more water evaporates.
So, if you’re in a place where clouds often rain off, that could have definitely amplified the cold.