I was at Camelback this past weekend. During the day it was fine (I think the high was about 40º). But, once the sun went down it turned into an absolute ice rink. I'd say if you go, get there early and don't plan to stay much past 5pm.
Heres the trick to riding the Ice Coast..Early morning ride the middle of the runs, as the day progresses ride the side's of the run's by this time the snow will be swept onto the sides from skiers and boarders. I know it sucks but why sit at home and pass up on a day of riding. To me the shitier the conditions the better a rider I'll become.