How much snow has Istebna - Złoty Groń gotten this season and over the last few ski seasons? Istebna - Złoty Groń gets an average annual snowfall of 100cm of snow per year and on average has 20 snowfall days. Check out Istebna - Złoty Groń historical snowfall using the grid below with average Istebna - Złoty Groń snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.