The most pleasant months of the year for the 97751 zip code are September, June and August. In the 97751 zip code, there are 2 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 97751 zip code with an average high temperature of 86.0°, which ranks it as warmer than most places in Oregon. December is the snowiest month in the 97751 zip code with 11.1 inches of snow, and 7 months of the year have significant snowfall. There are few days during the year when the humidity is even noticable.