The air movement on Saturday changed from north to southwest during daylight hours as the depressions and high over Greenland repositioned. However, although the southwesterly breeze is usually warmer the air mass was still Arctic air that limited the temperature rise to 3.6C, although a degree up on the previous two days it was still 4.5C below average.
The minimum of -5.8C that occurred overnight at 01.12 Sunday was 8.3C below the average. Evidence at frost light would indicate that fog or mist occurred during darkness asters are coated with frozen moisture.
Sunday did not see the sun after dawn as on previous days as we woke to total cloud cover. The temperature had risen a degree to reach -4.7C at 08.00. The barometric pressure has been falling for the past five days and at 08.00 read 1008.5mb, the lowest since the end of November.