The most pleasant months of the year for Preston are September, June and August. In Preston, there are 2 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Preston with an average high temperature of 87.8°, which ranks it as cooler than most places in Nevada. January is the snowiest month in Preston with 6.9 inches of snow, and 8 months of the year have significant snowfall. There are few days during the year when the humidity is even noticable.