Hi there,
So I'm currently Caminoing, thought I'd check in on the forums as I have wifi and a comfy evening when this thread caught my eye. I'm currently in Monistrol d'Allier, first day out of Le Puy. I left Geneva on the 24th of February. I don't know quite how early you're going, but if you're doing the St. Jakobsweg in the Alps there's really no way you're going before April unless you're bringing snowshoes. Around Geneva there was quite a bit of snow above 700 meters. In Haute-Savoie, Savoie and now on the Massif the snow line has been around 900m. Above those heights it's been knee deep most of the time.
At Raffy, since you mentioned it, the path is the road, which isn't snowy really (the roads haven't been, but the paths...) and the hill up there starts with a path which can be avoided by following the road straight and taking a right after the last two houses in the hamlet. Kids were building snow forts by the road. By the way, do not even think about pausing before you get past the sign indicating you're in Raffy. The view blew me away. You'll see what I mean.
If you're going to be heading out of Geneva around my time I can give you more exact snow specifications regarding certain places.
Bien Chemin!