Well as someone who lives in Vegas, the Rockies are pretty far away, especially if you have 3-4 days. From here to Denver is a pretty full day's drive, a little less to Veil and the ski resorts. There's no snow here or in the surrounding mountains - it's been mid 60's for the last 1.5 - 2 weeks. There are some resorts closer in Utah like Brianhead - but I don't know if there's much snow there either. The Grand Canyon is not too far off and there's helicopter flights there from Vegas.
As far as Southern Cali, it's been pretty warm there too, maybe someone from the area can report if there's any ski resorts/snow open close to LA.
If I recall correctly, the Orlesians claimed Ferelden smelled like wet dog (Dragon Age).