4 of us climbing Marcy one day. Zero visibility and snow, heavy wind.
Everybody has a different risk tolerance, but as a solo hiker, these are conditions I will not head UP into. Even with a compass bearing, you can still quickly hike yourself onto very uncomfortable terrain when above treeline leading to a higher potential for injury. Just a bad habit to get into as a soloist, where you are your own safety net. Kind of like sticking your head in a lion's mouth ... sooner or later, he's going to bite.