How much snow has Okemo Mountain Resort gotten this season and over the last few ski seasons? Okemo Mountain Resort gets an average annual snowfall of 120" of snow per year and on average has 32 annual snowfall days. The current 10-year snowfall record is 23". Check out Okemo Mountain Resort historical snowfall using the grid below with average Okemo Mountain Resort snow stats that includes: Average Snowfall, Max Base Depth, Biggest Snowfall, Snowfall Days and Average Base Depth.