Usually In Michigan we have temps well below freezing and in the single digits at night. Not this year.
In fact my Day Lily under a pine tree came back in December because the weather turned warm. The poor plant has been struggling, until it finally got too cold and it died. One day it is cold here, then it gets warm for a day or two, then cold again.
Not that I am complaining. I haven't had to shovel snow this season.