The snow on the access road started around 3000' and the road became tough to drive on shortly thereafter - we parked about a mile from the trailhead. The coverage on the trail and throughout the forest was good but there was a thick crust up to about 4200', after which point the crust gradually disappeared and the top 6+ inches of powder had a consistent medium-heavy density. This continued up until we gained the ridge just above treeline.
All snow that we could see above the treeline showed signs of wind affect, from mild rippling in some places to near sastrugi in others. Throughout our time spent above treeline, the wind was intermittently gusty enough to visibly transport more snow (see attached pic). The wind layer of snow was generally a few inches thick, and soft enough to provide some pretty decent, buttery turns - we were pleasantly surprised!
Once above treeline, the temps remained in the high 20s to near-freezing in the sun, but the radiation did not noticeably impact the snow surface, likely due to the low angle, limited time shining on the north-facing aspects, and a very thin high elevation cloud layer blocking some of the intensity. By the time we were skiing back into the trees around 2:30PM, the sun was close to setting on the ridge.
On our descent, conditions throughout remained largely the same, with the only small change being some slightly softer snow on the access road.