I did it in late March in 2014, and obviously a bit later in the month, but there was still plenty of white stuff above 9k. There was some spotted snow on the sides of Skyline, but even at 8k, the direct sun in most places and temperatures probably melt it quickly. A few shaded spots near the end where the snow was lingering (including a little on the trail in spots), but not bad.
What was bad was the trail above the ranger station on the way to the summit. It was completely covered with snow and ice. When we were there mid-day headed up it was slightly slushy from temps just above freezing, but by mid-afternoon, as the sun sank behind the mountain, the temps dipped below freezing rapidly and the entire trail was ice. Microspikes were enough, but it was cold and slick.
