How much snow has Unterbäch gotten this season and over the last few ski seasons? Unterbäch gets an average annual snowfall of 256cm of snow per year and on average has 18 annual snowfall days. The current 10-year snowfall record is 160cm, the average snow depth at Unterbäch is 89cm. Check out Unterbäch historical snowfall using the grid below with average Unterbäch snow stats that includes: Average Snowfall, Max Base Depth, Biggest Snowfall, Snowfall Days and Average Base Depth. Click on the Annual Tab to see every year since the 2013-2014 season.