How much snow has Passo Stelvio gotten this season and over the last few ski seasons? Passo Stelvio gets an average annual snowfall of 12cm of snow per year and on average has 2 snowfall days. Check out Passo Stelvio historical snowfall using the grid below with average Passo Stelvio snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.