There was snow last week up in collingwood, but its been ungodly warm recently. I did hear that they were expecting some snow up there this week though, so it may still be good. I just warn you that this friday at blue mountain is going to be really really really busy. In fact the group I go up with has cancelled this friday's trip to do paintball or go kart or something instead. Good luck though!
http://www.bluemountain.ca/conditions_snow_report.htm
here are the condition reports