How much snow has Col d'Ornon gotten this season and over the last few ski seasons? Col d'Ornon gets an average annual snowfall of 64cm of snow per year and on average has 8 snowfall days. Check out Col d'Ornon historical snowfall using the grid below with average Col d'Ornon snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.