How much snow has Spiazzi di Gromo gotten this season and over the last few ski seasons? Spiazzi di Gromo gets an average annual snowfall of 94cm of snow per year and on average has 6 annual snowfall days. The current 10-year snowfall record is 80cm, the average snow depth at Spiazzi di Gromo is 45cm. Check out Spiazzi di Gromo historical snowfall using the grid below with average Spiazzi di Gromo 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.