Snow in South America

OK so i'm thinking about a trip to South America this year, but no resort post there average annual snowfall. I've heard that the mountains near Santiago are drier, but are higher up and have more rowdy skiing. And the mountains further south in the Andes are colder more snowy, but less rowdy. So does any know or know where it find info on the average annual snowfall. I was thinking of hitting the Tres Valley, Portillo, and Las Lenas, since they are all near Sanitago, but I would be willing to go somewhere with a better chance of snowfall, even if it meant less rowdy lines and difficultly getting access to....

Thanks!

Lenas is a 9-10 hour drive (750km) from Santiago, if the pass is open.

I haven't been to Chillan, but I believe it gets the most snow? I've had great trips to both Las Lenas and Portillo, but would never book either until they had a decent base.
Portillo with a couple of days at Ski Arpa, is a pretty nice trip.