The most pleasant months of the year for the 37315 zip code are May, October and September. In the 37315 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 37315 zip code with an average high temperature of 89.4°, which ranks it as warmer than most places in Tennessee. January is the snowiest month in the 37315 zip code with 1.0 inches of snow, and 3 months of the year have significant snowfall. The most uncomfortably humid months are July, August and June.