In reply to industrialiceman:
I was there around the same time a couple of years ago - along with quite a lot of skiers as well as trekkers/climbers. On Toubkal, there was snow for the last two or three hours up to the refuge and snow all the way up from there to the summit(in fact, it was knee/thigh deep, i.e. hard work, on the first section up above the refuge). We also had some fresh snowfall one night while trekking prior to doing Toubkal. Like everywhere else, snowfall varies from year to year but I was told you are pretty certain to get a fair amount of snow cover right through into April most years. So, would definitely recommend crampons and an ice axe for Toubkal summit day - no great dangers but there are a couple of places where you would not want to slip too far. All the snow makes for great views and scenery, though.