The glorious sunshine on Sunday meant a warm day and thus produced the greatest equivalent of daily rainfall loss, 1.01mm, through evaporation from ground sources and plant life, since 26th October. The evaporation this month equals an equivalent loss of 10mm of rainfall when the actual rainfall total is just 2.5mm.
The sunshine felt quite warm and boosted the temperature to 12.5C, which was 4.5C above the average. During the evening the thermometer dropped to 5.3C at 20.25 before advancing cloud stopped the fall and produced a rise of a degree that by 08.00 on Monday read 7.1C.
At first light on Monday it was obvious that the warm and moist air had returned with low, thick cloud masking the Marlborough Downs and Savernake Forest. As the centre of the anticyclone is still relatively close, over Brittany, the barometric pressure is still quite high with a reading of 1026.0mb at 08.00. The position of the high pressure will mean the air movement will back a few degrees and come from the southwest today, still feeding in the mild, moist airstream.