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Novembers in Marlborough are getting wetter, but 2019's saw no rainfall records broken - unlike other parts of Britain

The nights are getting colder... (Photo: Eric Gilbert) The nights are getting colder... (Photo: Eric Gilbert) November began much as October had - with a former hurricane affecting our weather. Pablo was the first such storm to form so close to the UK, just west of the Iberian peninuslar. It brought mild weather with temperatures from the November 1 to November 5 a degree or so above average, a peak of 14.5C was recorded on November 1 being 3.4C above the 35-year average. 

The warm air was maintained during the nights, but storms bring high winds and we suffered from gusts of 24mph and 38 mph on November 1 and 2. Being many miles inland means that winds are moderated by the time they reach Wiltshire - at that time winds gusting to 83mph were recorded in Plymouth and 109 mph on the Isle of Wight.

You might have thought your wall barometer had broken during this period as it dropped so far. In fact the lowest barometric pressure was observed on November 2 with a reading of 976.1mb making it the lowest pressure since December 10 in 2017. This was not a record as a reading of 967mb was taken in November 2010.

The first half of the month was a very wet period with just two dry days by the time we reached November 15. Significant rainfalls were recorded on November 6, 9 and 13 with 15.9mm, 21.8mm and 10.2mm respectively.

Once again we have been very fortunate in that the torrential downpours hitting Britain were away from this part of the country. While we had very wet days, the Peak District for example had 112mm in 24 hours while Sheffield was drenched with 85mm, almost a month’s worth of rainfall in a day. 

Following this period the weather took a turn for the worse with both maxima and minima temperatures falling below average. There were 19 consecutive days with below average daytime peaks, with just 4.6C on November 30 being the month's coldest day - a drop of 5.5C on the average. 

The jet stream subtly changed direction mid-month allowing the barometric pressure to rise to its highest reading all month - 1018.1mb on November 18. This gave a slightly drier period with five totally dry days between November 16 and 20 - just 0.3mm of rain on November 17.

There were many cool nights with a sharp frost on the morning of November 19 when the thermometer fell away to -2.5C. 

The advancing ex-tropical Storm Sebastian made itself felt on November 26 with a temporary milder spell as the thermometer edged back above average due to the weather fronts that also brought considerable rainfall with tropical air crossing the country.

Due to the jet steam producing a conveyer belt of numerous depressions that crossed the country in November it was not surprising to find that the rainfall was above average and temperatures depressed.

The rainfall for the month amounted to 116.7mm, which was 24.6mm above the 35-year average. There have been 11 wetter Novembers with the extremes being just 27.8mm in 1990 and a drenching 203.5mm in 2002. This year the wettest November day occurred on the ninth - with a substantial fall of 21.8mm. 

The trend for the number of wet days in the month, described as equal to or above 1mm, has been slowly rising since my records began in 1984 when there were on average 12 wet days, which has risen to an average of 14 in recent years with 2019 producing 16 wet days.

Taking a wider view, looking at the 11 months from January to November in 2019, I find that 865mm of precipitation has fallen whereas the average over the past 35 years is 756mm.

Turning to temperatures, the many days of gloomy, wet weather meant a cool month. The mean temperature was 1C below the 35-year average with only 10 cooler months recorded since 1984. The warmest day occurred on November 1 with 14.5C.

There were seven days when an air frost occurred dropping to -2.5C in the early hours of November 19.  So in summary a cool, wet and predominately gloomy month with no UV registered during five days and 10 ten days when the sunshine recorder was not triggered.

Autumn 2019:

Even with short memories we recall it has been a wet autumn. The facts show that 380.7mm of precipitation was recorded making it the fourth wettest autumn since my records began in 1984. The mean temperature for the three months was 0.5C below the average making it the coolest since 2012.

Windrush Weather - Eric Gilbert's weather station - has daily stats and information.







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