Minimum higher than mean maximum for December

Yesterday was another dull, overcast day with no sunshine and occasional showers that amounted to 1.2mm. However, the mild and moist air from the Azores meant another warm day with a maximum of 12.1C that is almost 5C above the mean. The temperature very slowly fell during the afternoon but by midnight was still above 10C. By 08.00 the thermometer read 8.1C, the lowest for the last twenty-four hours, which is 6C above the mean minimum for December and 0.5C above the mean maximum for December.
The barometer now reads 1017.5mb, the lowest pressure this month as the anticyclone that dominated the early part of the month, very slowly declines allowing weather fronts to slowly cross the country.