The most pleasant months of the year for Dahlen CDP are August, July and June. In Dahlen CDP, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Dahlen CDP with an average high temperature of 80.1°, which ranks it as cooler than most places in North Dakota. December is the snowiest month in Dahlen CDP with 8.3 inches of snow, and 7 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.