Whistler has about the best conditions in BC. It has been snowing in little bits here and there, just enough to keep things soft. Best snow is above 1800m(Roundhouse/Rendezvous level). There is still less than 200cm base, so if you're skiing above the treeline you need a casual attitude about thwacking the odd rock. Below 1000m (gondola tops or mid station) expect icy or sloppy conditions, though the snowguns help.
We were there last week, and had more than our fill of sunshine and boot-top powder. If you go a little off the beaten track, there are still fresh tracks to cut three days after a snowfall. You'll have a great time!