The most pleasant months of the year for the 98559 zip code are August, July and September. In the 98559 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for the 98559 zip code with an average high temperature of 78.5°, which ranks it as about average compared to other places in Washington. January is the snowiest month in the 98559 zip code with 0.9 inches of snow, and 2 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.