How much snow has Loch Lomond gotten this season and over the last few ski seasons? Loch Lomond gets an average annual snowfall of 7" of snow per year and on average has 5 snowfall days. Check out Loch Lomond historical snowfall using the grid below with average Loch Lomond snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.