Inquisitive-sheep-in-West-Overton
Mop-Fair---10-10-09------08
Silbury-Sunset---10-06-08-----07
Gordon-and-Sam
IMG8472
Bluebells-in-West-Woods-10-05-09------30
White-Horse
Inbox2
BABRURY-XC-JUMP-473
Landscape
Snowy-High-Street
Pete-Gage-Band1
Civic-Service-18
Musical-Time-Machine5
Roving-Crows1
Animals06
D4S0472
YELLOWHAMMER-473-
TdB-Pewsey044
4MI-2013-11-28030
Remebrance-18-1
Ogbourne
Camilla-2012-10-19152
Town-Hall-2011-05-0308-
Hares017cropped
SBJ
Big-Bull
Christmas-Lights15-11-20097
George-Wilding-301
JazzFestSat572
Tina-May5
Turin-Brakes6
Torch-2012-05-23093-
MBORO-HOCKEY-YOUTH-473
Sunset
Brazier
EARLY-MORNING-CANTER-473-
IMG9097
MYFC005
Remebrance-18-2
Scouting-for-Girls7
Inbox-1
1stXV-and-others-with-Mayor
Marlborough-2013-04-18StPeters
Brooks-Williams1
Duke-of-Kent086
Camilla-MSM
D812668
Remebrance-18-3
Marlborough-under-snow-from-above---Pete-Davies
FROSTY-MORNING-
D4S9273
Sunset2

 

This email address is being protected from spambots. You need JavaScript enabled to view it.

Marlborough's weather: May was cool, but together the three months of Spring were warmer than average

A May peacock (Photo: Eric Gilbert)A May peacock (Photo: Eric Gilbert)It was a cool May with the mean temperature just below average. The statistics show that although the daytime temperatures were in fact above average they were offset by the many cold nights that meant the mean minimum was 1.1C below average.  

There was only one air frost - with -1.2C recorded on May 5 - but several nights gave a ground frost with no evidence above ground - especially during the early days of May.

Warm air brought to us on a south-westerly air flow from Iberia, meant a warmer end to the month with the warmest night on May 31 with a minimum of 13.9C, which was 6.8C above the 35-year average.

Although the mean temperature for last month of Spring was below average, the season was warmer than normal (+0.8C) with a mean of 9.71C. 

It is interesting to analyse the data since my station began recording in 1984 and find that Spring of that year was exceptionally cold with a mean of 6.83C.  Investigating the statistics for that year I found that March was 2.1C below average, April 1.1C lower than average and May a significant 2.2C below the current average. By contrast, the Spring of 2011 produced a mean of 10.51C, the warmest from my records.

During that particularly cold Spring of 1984, hard frosts occurred on April 2 and 4 with the thermometer falling to -6.0 and -5.0C. This followed a cold March that produced 11 air frosts, the coldest of which was -3.5C on March 29.

Contrasting 1984 with the warmest Spring in 2011, although a hard air frost measuring -6.3C was recorded on 8 March 2011, no air frost occurred after March 26 or for the whole of April and May. 

Although the examples above cover the past 35 years, the graph for this period shows an almost continuous rise in the mean temperature with the exception of the cold Springs in 1996 and 2013.

Rainfall in May 2018 was concentrated on three days, May 7 - 9, when over half the month’s precipitation fell - and 6.2mm, 14.4mm and 14.0mm respectively was recorded. The total rainfall for the month almost equalled the average with 59.5mm against the average of 61.0mm. 

There were only six days classified as wet days when the precipitation was equal to or greater than 1mm and 21 dry days in May.

The trend of drier than average rainfall continues into 2019. The rainfall for 2018 was 62mm below the 35-year average at 783mm. 

The first five months of 2019 have produced a total of 301mm a deficit of 55mm compared to the 35-year average. However, set against that figure must be the loss through evaporation from ground sources and plant life, the equivalent of 237mm rainfall. 

The year of 2018 was not the driest I have recorded, as that occurred in 1996 with 594mm of precipitation whereas six years later, in the very wet year of 2002, 1,146mm was recorded. 

It may or may not be a taste of days to come, but June 1 was the hottest day in Marlborough since 7 August 2018.

There is more information - with daily statistics - on Eric Gilbert's Windrush Weather website. 







Print Email

Tina-May5
Animals06
D4S9273
Duke-of-Kent086
1stXV-and-others-with-Mayor
White-Horse
D4S0472
Civic-Service-18
Pete-Gage-Band1
Bluebells-in-West-Woods-10-05-09---30
Brazier
Remebrance-18-2
D812668
Turin-Brakes6
MYFC005
SBJ
Musical-Time-Machine5
Remebrance-18-3
Brooks-Williams1
Gordon-and-Sam
TdB-Pewsey044
Sunset
Marlborough-2013-04-18StPeters
Town-Hall-2011-05-0308-
Inquisitive-sheep-in-West-Overton
ARKManton-2012-01-1449-
4MI-2013-11-28030
Hares017cropped
Landscape
Camilla-2012-10-19152
Roving-Crows1
Christmas-Lights15-11-20097
IMG9097
Ogbourne
Marlborough-under-snow-from-above---Pete-Davies
Camilla-MSM
Torch-2012-05-23093-
Sunset2
George-Wilding-301
JazzFestSat572
Snowy-High-Street
Mop-Fair---10-10-09---08
IMG8472
CivicSelfie1
Silbury-Sunset---10-06-08---07
Big-Bull
Scouting-for-Girls7
Remebrance-18-1