The most pleasant months of the year for Melvin are August, July and June. In Melvin, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Melvin with an average high temperature of 79.9°, which ranks it as cooler than most places in North Dakota. December is the snowiest month in Melvin with 8.2 inches of snow, and 7 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.