How much snow has Praz sur Arly gotten this season and over the last few ski seasons? Praz sur Arly gets an average annual snowfall of 272cm of snow per year and on average has 22 snowfall days. Check out Praz sur Arly historical snowfall using the grid below with average Praz sur Arly snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.