Sometime tomorrow there should be snowfall and freezing temperatures. At the weekend, the freezing level will drop further and remain low throughout including frost down to the shore on Sunday morning. NW winds will ease, veering E then SE, and then build again later on Sunday. 50+% cloud may be typical and a good detailed mapping and its careful use will be essential on the ridge.
It's only a forecast.
As jas points out: as good a time as any. Skye is a hard one to guess. If you arrive and it all looks good then go for it and well done for getting it right. If you arrive and it's rubbish then drive back across the bridge and colder inland ridges are just along the road at Cluanie and the BenN is a few dozen miles beyond that.
(Bring a decent camera.)