For many a white Christmas means a complete covering of snow, ideally falling between midnight and midday on the 25th. However, the definition used most widely, notably by those placing and taking bets, is for a single snow flake (perhaps amongst a shower of rain and snow mixed) to be observed falling in the 24 hours of December 25th. The latest indications for a White Christmas are still suggesting there will be a significant cold spell during the Christmas period giving the possibility of some substantial snowfall in places. Christmas day itself may well be dry, although very cold with frost persisting through the day. As temperatures are expected to remain low, any snow cover that has accumulated in the days leading up to Christmas is likely to persist, meaning that some areas are likely to have snow on the ground on Christmas day. | 
