As of a week ago, there were scattered patches of snow near the summit but I didn’t see any at the summit camping area itself. I still saw some patches from a distance two days ago. With a bit of hiking you might be able to find enough snow to melt for water, but it’s likely to have a lot of grit mixed in.
Winds at the summit are often very strong throughout the night, making tents flap and sleeping difficult. Camping lower, with trees for shade, much less wind, and nearby water would be far more enjoyable.