Does it snow here in winter? More spefically in december

I visited the week of 11/9/2020. There was snow on the ground still in the shaded areas from the previous weekend's storm. Frye campground, about .5 mile up the road, had a lot of snow/icy roads within the campground since it's in a canyon. (It's ~6k feet+. The weather could change every 5 mins)

Yes. I camped here in November and there was a little snow on the ground.