I'm extremely biased regarding films, but that bias is based on long experience!
Fuji's Provia 100F handles snow scenes with style: clear blues, crisp whites and natural colour. At the other extreme, if you want colours from Vaudeville, angle for Velvia 50 (rated at EI40); you may wish to experiment with either/both, but generally Velvia will have the better "WOW"! factor, particularly early morning to evening snow scenes. If your camera has evaluative metering, it should nail the snow scene without trouble, otherwise 1.5 stops in bright sun added to baseline exposure. Remember that print films have much wider latitude (or "play") than the transparency films commonly available. Velvia is very unforgiving of gross exposure errors.