I enjoy our periodic short burst of true winter weather. The cold periods in western Washington are short. I will say that while the areas subject to Fraser River outflow winds are a bit rough - 50 mph winds when the temperature in the teens and single digit range is not pleasant.
The north edge of Skagit delta does get cold due to the proximity of the Fraser Canyon winds coming down across Whatcom County and over Bellingham and Samish Bay. The delta is generally a windy place, but Samish Island deflects the north wind such that the south side of the island is cold but not windy.
Alice Bay, a bay that is separated from Samish Bay by a low peninsula of salt water marsh was completely frozen over. Alice Bay usually completely empties of water during low tides; hence, the shallow water during high tides freezes.