The most pleasant months of the year for Cash are June, September and August. In Cash, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Cash with an average high temperature of 85.4°, which ranks it as about average compared to other places in South Dakota. March is the snowiest month in Cash with 7.6 inches of snow, and 9 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.