How much snow has Grotli Skiheiser gotten this season and over the last few ski seasons? Grotli Skiheiser gets an average annual snowfall of 17cm of snow per year and on average has 4 snowfall days. Check out Grotli Skiheiser historical snowfall using the grid below with average Grotli Skiheiser snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.