Eastern Washington's prime vineyards lie at the same northerly latitude as France's renowned wine regions, providing more hours of grape-maturing sunlight during the growing season than in southern vineyards. Two coastal mountain ranges provide ample protection from western Washington's cool, wet weather, yielding over 300 days of sunshine and less than ten inches of rain per year. stimson-estate-cellars.com. Alc. 13.5% by vol. Cellared & bottled by Stimson Estate Cellars Paterson, WA USA.