How much snow has Zawoja – Mosorny Groń gotten this season and over the last few ski seasons? Zawoja – Mosorny Groń gets an average annual snowfall of 78cm of snow per year and on average has 12 snowfall days. Check out Zawoja – Mosorny Groń historical snowfall using the grid below with average Zawoja – Mosorny Groń snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.