The most pleasant months of the year for Sauk Valley are June, July and August. In Sauk Valley, there are 3 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Sauk Valley with an average high temperature of 81.3°, which ranks it as cooler than most places in North Dakota. January is the snowiest month in Sauk Valley with 7.5 inches of snow, and 8 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.