Its beginning to look a lot like Christmas
Of course, even if a month is colder than average overall, it doesn't guarantee a particular day will be cold, and we'll need that before we even start to think about the risk of snow, but the signs are positive.
Christmas weather forecast
We're still using the CFS (climate forecast system) charts at this stage, until the medium range models come in to play during December, and again this week we've seen a trend for cold weather around the Christmas period. In fact this model, and a number of other signals are pointing towards cold air being with us for a good part of the second half of the December. This particular run brings cold air south during Xmas day, with the blue colour indicating a risk of snow - but don't forget we're just looking for trends at this stage.
http://www.netweather.tv/index.cgi?action=xmas;sess=