The most pleasant months of the year for Cedar are June, September and August. In Cedar, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Cedar with an average high temperature of 86.3°, which ranks it as warmer than most places in South Dakota. March is the snowiest month in Cedar with 8.0 inches of snow, and 7 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.