There will be no snow anywhere in the world this coming March. How do I know this you ask? The answer is simple IT'S ALL FALLING TONIGHT!!!!!!! ARRRGH,
It is unlikely that there will be snow on the ground in Vancouver unless there is a significant drop in temperature. There will be snow on the mountains and there are a number of ski resorts in the area with the most famous being Whistler, about 1.5 to 2 hours from Vancouver by car. At the moment it is supposed to rain and that is the likely weather you will see when you get here. There is a chance of snow in Whistler however and there will certainly be snow on the mountains there.
Sorry, my crystal ball is being repaired right now. Sometimes there is snow on the local mountains, sometimes there isn't. If it's cold enough, they can make artificial snow, but when you get into spring break, it's anybody's guess as to what the weather will be. Three months is a long ways off.