How much snow has Cerro Castor gotten this season and over the last few ski seasons? Cerro Castor gets an average annual snowfall of 15" of snow per year and on average has 8 snowfall days. Check out Cerro Castor historical snowfall using the grid below with average Cerro Castor snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.