The most pleasant months of the year for South Red River are August, July and June. In South Red River, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for South Red River with an average high temperature of 79.6°, which ranks it as cooler than most places in Minnesota. January is the snowiest month in South Red River with 8.4 inches of snow, and 7 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.