How much snow has Grimentz-Zinal gotten this season and over the last few ski seasons? Grimentz-Zinal gets an average annual snowfall of 267cm of snow per year and on average has 20 snowfall days. Check out Grimentz-Zinal historical snowfall using the grid below with average Grimentz-Zinal snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.