 The warm days and cool nights of the area help retain the balance of acid and sugar levels in the grape which give Washington wines their characteristic balance in flavors.The peak ripening of the grapes occurs during the last four to six weeks of the growing season, with the grapes hanging on the vines a little longer than in California.This allows the grape more time to develop maturity in tannins as well as other aroma and profile characteristics that will be brought out in the resulting wines.