The most pleasant months of the year for Rolling Green are June, August and July. In Rolling Green, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Rolling Green with an average high temperature of 81.5°, which ranks it as about average compared to other places in North Dakota. January is the snowiest month in Rolling Green with 8.9 inches of snow, and 8 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.