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Nigel Marriott's Blog

An independent statistician using data to understand our world and to predict the future

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UK Weather Tracker #114 – July 2026

August 8, 2026 By Nigel Marriott

The sunniest July on record was also the 2nd warmest and 2nd driest on record for the UK.  I would like to say I was glad to escape the heat by being abroad but where I was wasn’t any cooler!

For the first time ever, the average UK wide 24 hour temperature for the January to July period reached 10 degrees Celsius which is 0.3 degrees warmer than the previous high set last year.   To avoid setting a new record for annual temperatures in 2026, the next 5 months will have to average less than 10.2 Celsius which is 0.3 degrees cooler than the average of the last 5 years.

[Read more…] about UK Weather Tracker #114 – July 2026

Filed Under: Weather Tagged With: Index, Presenting data, Weather, Weather Tracker

UK Weather Tracker #113 – June 2026

July 4, 2026 By Nigel Marriott

June 2026 was the 2nd warmest June on record across the UK.  Unlike last month when I said I took the statement of it being the 3rd warmest May on record on trust, this time I can well believe it having spent the heatwave at the end of June on a canal boat on the Welsh border.  The collections of fans on board certainly worked overtime!

[Read more…] about UK Weather Tracker #113 – June 2026

Filed Under: Weather Tagged With: Index, Presenting data, Weather, Weather Tracker

UK Weather Trends #41 – Spring 2026

June 2, 2026 By Nigel Marriott

Spring 2026 in the UK was the 3rd hottest record with nearly all regions in England recording their hottest ever spring.  The heatwave at the end of May (whilst I was out of the country!) set new records for maximum temperature but all 3 months of the season were well above normal.  Whilst it was also the 3rd sunniest spring on record, rainfall was entirely normal for the season.

[Read more…] about UK Weather Trends #41 – Spring 2026

Filed Under: Weather Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Tracker #112 – May 2026

June 2, 2026 By Nigel Marriott

May 2026 was the 3rd warmest on record across the UK.  I have to take this on trust as I spent most of the second half of May abroad and missed the warmest spring on record in the South West!  However, like last month, my abnormality index was not impressed and rated the month as entirely normal.

[Read more…] about UK Weather Tracker #112 – May 2026

Filed Under: Weather Tagged With: Index, Presenting data, Weather, Weather Tracker

UK Weather Tracker #111 – April 2026

May 5, 2026 By Nigel Marriott

April 2026 was the 4th sunniest and 7th warmest on record as well as 11th widest temperature range.  However, my abnormality index was not impressed and rated the month as entirely normal.

[Read more…] about UK Weather Tracker #111 – April 2026

Filed Under: Weather Tagged With: Index, Presenting data, Weather, Weather Tracker

UK Weather Tracker #110 – March 2026

April 3, 2026 By Nigel Marriott

The UK weather in March was the 10th warmest on record but otherwise unremarkable.

[Read more…] about UK Weather Tracker #110 – March 2026

Filed Under: Weather Tagged With: Index, Presenting data, Weather, Weather Tracker

UK Weather Trends #40 – Winter 2026

March 6, 2026 By Nigel Marriott

Winter 2026 in the UK was warmer, wetter and darker than normal but not the extent I expected given the unrelenting days without the sun in January.  So for those people in Aberdeen who went 46 days without seeing the sun, it could have been worse!

[Read more…] about UK Weather Trends #40 – Winter 2026

Filed Under: Weather Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Tracker #109 – February 2026

March 6, 2026 By Nigel Marriott

The UK weather in February was warm, wet and dark for this time of year.  We also had the 2nd lowest range of temperatures on record with maximum and minimums across the 24 hours varying by only 4.5 degrees on average.

[Read more…] about UK Weather Tracker #109 – February 2026

Filed Under: Archive Tagged With: Index, Presenting data, Weather, Weather Tracker

UK Weather Tracker #108 – January 2026

February 2, 2026 By Nigel Marriott

The 2026 calendar year in the UK began with a wetter January than usual but otherwise the weather in this month was unremarkable.

[Read more…] about UK Weather Tracker #108 – January 2026

Filed Under: Archive Tagged With: Index, Presenting data, Weather, Weather Tracker

UK Weather Trends #39 – Annual Temperatures in 2025

January 6, 2026 By Nigel Marriott

The year 2025 was both the hottest and 2nd hottest year on record in the UK.  Last year, I used a CUSUM Chart to conclude “if the calendar year average is greater than 9.48 degrees Celsius and the meteorological year average is greater than 9.33 degrees Celsius … (this will) signal an upwards trend change“.  By co-incidence, the average 24-hour temperature across the UK in 2025 was 10.09 degrees Celsius for both the calendar (Jan to Dec) and the meteorological (Dec to Nov) years which is clearly higher than these thresholds.  It’s only taken me four years of writing to conclude a new upward trend in UK temperatures has begun.

[Read more…] about UK Weather Trends #39 – Annual Temperatures in 2025

Filed Under: Weather Tagged With: Control Chart, CUSUM, SPC, Statistical Process Control, t-test, temperature, trend analysis, Weather, weather trends

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More blogs

UK Weather Tracker #114 – July 2026

The sunniest July on record was also the 2nd warmest and 2nd driest on record for the UK.  I would … [Read More...] about UK Weather Tracker #114 – July 2026

UK Weather Tracker #113 – June 2026

June 2026 was the 2nd warmest June on record across the UK.  Unlike last month when I said I took … [Read More...] about UK Weather Tracker #113 – June 2026

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UK Weather Trends #41 – Spring 2026

Spring 2026 in the UK was the 3rd hottest record with nearly all regions in England recording their … [Read More...] about UK Weather Trends #41 – Spring 2026

UK Weather Tracker #112 – May 2026

May 2026 was the 3rd warmest on record across the UK.  I have to take this on trust as I spent most … [Read More...] about UK Weather Tracker #112 – May 2026

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