Mine gets a good bit of that too. It's planted about 6 feet in front of an ESE-facing thick granite wall. That wall not only provides radiational warmth, but also big-time protection from westerly and northwesterly winter winds. Plus, the overall location is in the city of Wilmington proper. Meaning, you've got a lot of concrete & asphalt around. More of that type of surface than grass or trees.
I'm just happy that after 14 years, the SOB is still green and growing this far up the coast. With no "huts" or artificial insulation each winter.
About 15 feet away from it are two OTHER 14 year survivor marginals: a Bay Laurel - not seen at all around these parts - and a Live Oak.
Of the 3, the oak is the biggest success story. Literally a 2-story monster now. Never had stem dieback even after very tough "polar vortex" winters. Most winters, the leaves don't even suffer any setbacks.