The most pleasant months of the year for Jones are June, September and August. In Jones, there are 2 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Jones 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 Jones with 8.8 inches of snow, and 7 months of the year have significant snowfall. But there some days when the humidity becomes unpleasant, especially in July and August.