The conditions will be anywhere from thin boilerplate to bomber and deep, but it could be baseless with 4' of new.
The only time that question can be answered is a few days before your trip. Generally, the skiing will be ok around that time. And yeah, that is a really ambiguous answer. Sometimes most of the mountain is open and the skiing is really good, some years it's just man-made on the lower mountain. The snowpack is pretty unpredictable around here, so just cross your fingers and hope for the best. At the very least, you will get to go to a kick-ass area and spend some time in the mountains.