Boxing Day saw a continuation of the the virtually static weather under the intense high pressure. There was little wind to break up the clouds, which brought mild but moist air and blocking out any possibility of sunshine.
The maximum was again above average ((+!.0C) with a peak of 8.8C but clearing skies overnight meant the thermometer fell away to a minimum of 1.7C at 08.00. The lower temperature meant the moist air condensed so that at dawn fog had formed, classed as thick, reducing visibility to under 100m.