The most pleasant months of the year for the 83203 zip code are June, September and August. In the 83203 zip code, there are 2 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 83203 zip code with an average high temperature of 87.2°, which ranks it as warmer than most places in Idaho. December is the snowiest month in the 83203 zip code with 11.6 inches of snow, and 8 months of the year have significant snowfall. Days with noticeable humidity are rare throughout the year.