It can snow any time from october to April staying around longer in the colder months, hanging on in gullies for a month or so.
Some years are better than others, and the last two or three have been very good.
This year's been warm. It's only snowed once and that has now all gone. I don't expect much more this year. but there is a chance.
Of course, when the snow is down, weather conditions are more often like the picture below. Biting cold, windy, flurries of snow and spindrift, with low grey cloud meeting the snow, sometimes you can hardly tell where snow ends and sky begins.