Author: Eric Gilbert

After a dull start the afternoon brightened on Tuesday that pushed the thermometer to 21.8C being 3.1C above average and the warmest day since 20th August.

The light westerly breeze continued with a maximum gust of just 15mph.

Another mild night followed with the thermometer not sinking below 13.2C, which was 4C above average. We have only had one night with a below average temperature during September.

Wednesday started as did Tuesday with low cloud and misty conditions. The light breeze continues from the west although this direction is likely to veer into the north west as the barometric pressure is beginning to fall away and the centre move position in the Atlantic.

Monday brought limited sunshine, just 3.8 hours, but the gentle breeze from the west meant a peak temperature of 18.2C was 0.5C below the 36-year average.

The thermometer fell very little during the night that gave us a very mild night with the thermometer not sinking below 15.6C being 6.4C above the average.

Tuesday after dawn the low cloud base, masking at times the Marlborough Downs, brought humid and and just a light breeze.

The barometric pressure has built a little in the past twenty-four hours with a reading at 08.00 of 1024.5mb the highest since 21st July. An elongated area of high pressure in the eastern Atlantic continues to feed the UK with a westerly air mass.

During the 5.3 hours of sunshine on Sunday the thermometer rose to a maximum of 19.7C being 1.0C above the average. The spells of sunshine made it feel very pleasant especially as the wind was very light for most of the day with a maximum gust of just 10mph and from the west south west.

During the early hours of Monday, as the thermometer continued to fall with a minimum of 7.1C, which was 2.1C below average, variable fog began to develop. The fog initially was in the fields when hedges and trees could be seen outlining the boundaries but around 07.30 it began to thicken with a minimal visibility of 500m.

By 08.00 the fog was beginning to thin under the influence of brief bursts of sunshine that lifted the temperature to 9.4C making it the coolest start to the day at that time since 16th May. Autumn has truly arrived.

Saturday was another below average day with the maximum temperature of 17.9C (-0.8C). The westerly breeze, gusting at its peak to 16mph, moderated the warmth.

It was another dry day with UV again reaching the ‘High’ category around midday during the 7 hours of sunshine.

The thermometer did not fall below average overnight due to broken cloud cover with a minimum 9.7C (+0.5C).

Sunday began mostly cloudy with brief glimpses of brightness and calm conditions.

Friday was the first dry day this month with almost 4 hours of sunshine. However, the brisk westerly breeze, gusting to 17mph, limited the temperature rise to a maximum of 17.6C being 1.1C below the 36-year average. In the sunshine the UV level was the highest this month at 5.6, which was in the ‘High’ category around midday.

The thermometer dropped to 8.6C in the early hours of Saturday, which was 0.6C below average and produced radiation fog in the River Og valley briefly around dawn. This quickly dispersed as the sun rose above the horizon heralding a sunny morning. The barometric pressure is currently the highest this month at 1021.5mb