The most pleasant months of the year for Blyn are August, July and September. In Blyn, there are 1 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Blyn with an average high temperature of 70.2°, which ranks it as one of the coolest places in Washington. December is the snowiest month in Blyn with 0.7 inches of snow, and 2 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.