Ski Areas in Val-d'Illiez Val-d'Illiez Ski Resorts Val-d'Illiez is a region of Switzerland offering skiing and snowboarding in 2 Swiss Ski Resorts, including Champoussin and Les Crosets. Snow Forecasts for Val-d'Illiez Ski Resorts in Val-d'Illiez with snow forecast in the next 7 days. Snow Report and Forecast 7 Day Champoussin7cm Les Crosets4cm Forecast updated : 08 May 2025 00:39 AEST Val-d'Illiez Ski Resorts Ski Resorts in Val-d'Illiez Ski ResortPistesTopBeginn.Interm.Experts Les Crosets100km2,277mChampoussin10km2,350m