The Met Office has forecast snow — for the Christmas holidays. Temperatures are set to plummet again and it will feel as cold as -6C in Aberdeenshire, and -2C even as south as the Welsh Valleys in the coming days. The cold snap is set to continue — on and off — through to the Christmas period, the long-range forecast for which has now been published by the Met Office. The weather agency says snow, fog and frost are possible during the period from December 20 to January 2, which is the school