The most pleasant months of the year for Greenbush are August, July and June. In Greenbush, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Greenbush with an average high temperature of 80.9°, which ranks it as cooler than most places in North Dakota. January is the snowiest month in Greenbush with 9.6 inches of snow, and 8 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.