How much snow has Praz de Lys Sommand gotten this season and over the last few ski seasons? Praz de Lys Sommand gets an average annual snowfall of 352cm of snow per year and on average has 22 snowfall days. Check out Praz de Lys Sommand historical snowfall using the grid below with average Praz de Lys Sommand snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.