The most pleasant months of the year for the 98921 zip code are September, June and May. In the 98921 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 98921 zip code with an average high temperature of 89.3°, which ranks it as one of the hottest places in Washington. December is the snowiest month in the 98921 zip code with 8.4 inches of snow, and 4 months of the year have significant snowfall. Days with noticeable humidity are rare throughout the year.