There's always the NOAA snow model:
That's pointing at Mt Hood but you can scroll around and see anywhere in the U.S. and some of Canada
It's not perfect but it gives an idea. Like if it says the snow melted off on a particular day, it may linger for a few weeks, or if it says 6 inches, maybe it's really a foot. And it gives the average over an area that's like a square mile, so if you're looking at a narrow ridge, there could be significant snow, but average over a mile off the ridge there's little snow.