The most pleasant months of the year for Rosendal are June, August and July. In Rosendal, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Rosendal with an average high temperature of 81.3°, which ranks it as cooler than most places in North Dakota. December is the snowiest month in Rosendal with 9.0 inches of snow, and 7 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.