Tag Archives: St James Park weather station

London’s March extremes since 1959

I’ve put together a few top 10s of stats for Wanstead, St James’s Park and Heathrow for the month of March.

The month, the first of the meteorological spring can offer really contrasting weather; perishing cold and very pleasant warmth are both very possible, as the values show.

Probably most notable in the list is the cold March of 1962 which was the coldest of the 20th century and 11th coldest in a local list going back to 1797. March 2013 was also very cold. Strong winds from deep depressions often feature as does the odd blizzard.

Marches in the 1960s also appear to often start very cold and end very warm; the term ‘In like a lion, out like a lamb’ being very appropriate.
•Though this blog only covers extremes back to 1959, thanks to Met Office digitised data, I’ve unearthed records prior to this. Both W.A.L Marshall’s A Century of London Weather (covering 1841 to 1941) and J. H. Brazell’s London Weather (covering 1841 to 1964) confirm the coldest March day as the 13th in 1845 when 25F (-3.9C) was recorded at

The coldest March minimum was 4/5 in 1909 with 9F (-12.8C) at Epsom. Greenwich and Hampstead recorded 14F (-10C)

march extreme

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Some national UK March values according to TORRO

Hottest: 25C Wakefield, West Yorks – 29th 1929
Coldest: -22.8C Logie Coldstone, Grampian – 14th 1958
Wettest: 164.3mm Glen Etive, Highland – 26th 1968

march av tmax

march Tmin

march av rain

 

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London’s February extremes since 1959

I’ve put together a few top 10s of stats for Wanstead, St James’s Park and Heathrow for the month of February.

Probably most notable is the cold February of 1991 which saw the deepest snowfall I can remember – days of snow saw the level depth past my knee in suburban London. February 1986 was also very cold but also very dry with little snow.

Februaries in the 1990s were also often warm with 19.7C being reached in Wanstead on 13th in 1998.

It is a shame that the Met Office only publishes easy to access daily data in Excel format back to 1959 as this obviously omits the classic snowy February of 1947 which is worth a blog on its own.

My winter forecast for the London area can be found here.

 

wanstead feb

 

top 10 heathrow feb

SJP top 10 feb

Some national UK February values according to TORRO

Hottest: 21.2C Kew Gardens – 26th 2019
Coldest: -27.2C Braemar – 11th 1895
Wettest: 196.6mm Ben Nevis, Highland – 6th 1894

feb max av

London’s January extremes since 1959

I’ve put together a few top 10s of stats for Wanstead, St James’s Park and Heathrow for the month of January.

Probably most notable is just how impressive the depth of cold was during the cold spell of 1987. When considering St James’s Park the temperature on the 12th never rose above -6C: nearly 4C colder than any January day in 1963, the coldest winter in modern times.

My winter forecast for the London area can be found here.

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Some national UK January values according to TORRO

Hottest: 18.3C Aber, Gwynedd – 27th 1958
Coldest: -27.2C Braemar, Grampian – 10th 1982
Wettest: 238.4mm Loch Sloy main adit Strathclyde – 17th 1974

Climatology

Here’s a couple of graphs showing the maxima, minima and rainfall. Notice the spike  which reflects the singularity which has an 84 per cent probability.

jan av tmax

jan av min

jan av rain

 

London’s December extremes since 1959

I’ve put together a few top 10s of stats for Wanstead, St James’s Park and Heathrow for the month of December.

Probably most notable is how the month in 1978 lurched from being very mild and wet to very cold in under three weeks later, setting up one of the coldest-ever winters.

I’ve put together a few lines on what this winter might have in store for the London area here.

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December SJP

December Heathrow

Some national UK December values according to TORRO

Hottest: 18.3C Achnashellach – 2nd 1948
Coldest: -27.2C Altnaharra, Highland – 30th 1995
Wettest: 199.1mm Dalness, Highland – 17th 1966

Climatology

Here’s a couple of graphs showing the maxima and rainfall. Notice the spike just before Christmas day which reflects the singularity which has an 84 per cent probability.

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December minima.PNG

december rainfall.PNG

 

 

 

London’s November extremes since 1959

I’ve put together a few top 10s of stats for Wanstead, St James’s Park and Heathrow for the month of November.

Probably most notable is how the month in 2010 lurched from being so warm at the start to so cold three weeks later, setting up December to be one of the coldest on record.

wanstead

November SJP

heathrow

Some national UK November values according to TORRO

Hottest: 21.7C Prestatyn, Clwyd – 4th 1946
Coldest: -23.3C Braemar, Grampian – 14th 1919
Wettest: 211.1mm Lluest Wen Reservoir, Rhondda – 11th 1929

November climatology

In terms of climatology November maxima, considering the 1981-2010 average, shows a steady fall until the 15th. And another steady fall to the 22nd before things level off. This would reflect the November singularities; St Martin’s Summer, between 15th and 21st, peaking on the 18th, occurs in 66 per cent of years. The Early December storms singularity can arrive this month, on the 24th, the air off the Atlantic raising the mean temperature.

november average maxima

The average rainfall graphic shows that downpour amounts are variable through the month. A tendency for dry weather around the 15th reflects the St Martin’s Summer singularity.

november rain

This graphic shows the average 9am air pressure in November since 2013.

pressure