I climbed South sister last weekend (22nd-23rd). Left Green lakes TH at 11am, got up to Morrane lake by 1230 or 1, and set up camp. As evning hit, it started getting quite windy and cold, by 8pm or so we were too cold to be socializing so we hit up the tents, durring the night it was quite windy, had one or two thoughts about having to abort the trip. Up at 440am to get the water boiling (the top inch or so had frozen), hit the trail at 6am, you half to walk around Morane lake (because the trail straight up the gorge, at the head of the lake is closed), we did not make it above the ridge for sunrise, but it would be very easy to do. There is a solid trail all the way up, no snow until the summit ice cap. The final push is quite loose, but other than that it is in great shape. Summited by 950, Back at the cars by 2.