Late spring conditions on March 1st! The sun was beating down with very little wind so it was shorts and t-shirt weather for most of the climb.
We booted it up with some skier friends. They transitioned to skis at ~5,400' which means they hauled their skis for miles, sometimes over large boulders. The trail is snow-free until at least 4,800'. There is a variety of snow conditions, from icy to drifts up to a foot, so be prepared for a range. We had crampons but didn't use them; microspikes were sufficient.
Ice axe, beacon, shovel, probe, and crampons are all recommended, despite the low snow level. And mind the cornice! Most parties were avoiding the true summit due to snow stability concerns.
We left the Marble Mountain parking lot at 9:08am, after most people, and made it back at 5:41pm. The road to Climber's Bivouac is closed and the road is closed beyond Marble Mountain.