At long last it looks like the snow has started to arrive for the winter. It has kept us waiting quite late this autumn, we just had a brief flurry a few weeks ago but even that was enough for a few routes and a new route to be climbed. We now have a big high pressure system sat in the Atlantic which is keeping low pressure systems further north. As these track over the North of Scotland they bring a fairly continuous stream of polar maritime air to the west coast of Scotland. In other words, we'll have cold and wet weather for a week or so with snow on the hills. This graphic from WetterZentrale.de shows what's happening quite well.
In fact the rest of December and into early January look much the same ( http://www.metoffice.gov.uk/public/weather/forecast ). We're likely to have the usual mix of stormy weather and snow on the hills with occasional thaws and frosts on clear nights. So the message is, get your ice axes and crampons out, dust them off and get ready to battle those mountain giants!