From a previous topic here:

So, you want to climb the Mountaineer's Route in winter?

While this topic refers to the more challenging Mountaineer's Route up Whitney, the points made in Bob R's initial post should be taken to heart even if doing "only" the Whitney Main Trail during winter.

CaT

If future generations are to remember us with gratitude rather than contempt, we must leave them more than the miracle of technology. We must leave them a glimpse of the world as it was in the beginning, not just after we got through with it.
- Lyndon Johnson, on signing the Wilderness Act into law (1964)