After the gloom of Thursday, Friday started with a clear sky and remained that way all day with the occasional cumulus clouds passing by.
We enjoyed 6.66 hours of strong sunshine but the very light breeze, strongest gust of 10mph from the north-west, meant a maximum of 14.1C, which was 0.5C below the average. However, the lack of wind, frequently there were quite still conditions, gave a very pleasant day.
This was all due to a ridge of high pressure, centred off the south-west approaches, producing the highest barometric pressure, of 1035.1mb, since 20th April.
Inevitably, the clear skies meant that the thermometer began to tumble as soon as the influence of the sun departed and continued to fall steadily until just after midnight, at 00.27 precisely, when it reached the lowest of the night with a minimum of 2.4C. Variable cloud after that time meant that slowly the thermometer started to rise so that at 08.00 it read 4.7C.
This low overnight temperature meant that radiation fog formed in the Og and Kennet river valleys as the cold air, being more dense, settled in the lowest local area.
The low of 2.4C was the coldest night since 10th May resulting in the coolest morning for a month.