How much snow has Bolton Valley gotten this season and over the last few ski seasons? Bolton Valley gets an average annual snowfall of 176" of snow per year and on average has 46 annual snowfall days. The current 10-year snowfall record is 39", the average snow depth at Bolton Valley is 19". Check out Bolton Valley historical snowfall using the grid below with average Bolton Valley snow stats that includes: Average Snowfall, Max Base Depth, Biggest Snowfall, Snowfall Days and Average Base Depth. Click on the Annual Tab to see every year since the 2013-2014 season.