The most pleasant months of the year for Big Sandy are June, September and August. In Big Sandy, there are 5 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Big Sandy with an average high temperature of 82.6°, which ranks it as cooler than most places in West Virginia. January is the snowiest month in Big Sandy with 7.5 inches of snow, and 5 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.