MetOff. express concern (28.Aug.15; HERE-1): No-one can deny that we have had a pretty
disappointing summer with a lot of unsettled weather and only a few warm spells,
especially through  July and August.

Meanwhile DAILYMAIL predicts (HERE-2): A cold snap will begin on Sunday in Scotland and is expected to spread southwards, bringing snowfall to parts of England and Wales by Wednesday. Worst! Birmingham hit by ‘snow’ in September in unseasonal deluge, reported BirminghammMail on 02nd Sept (HERE-3).
The reason is simple. The North Atlantic water temperature is significantly below average. It affected UK summer weather and will dampen global temperature level. The sea shows strength in weather making, but MetOff shows little interest. Instead they “look beyond our shores” (read about it HERE-1)
1__http://blog.metoffice.gov.uk/2015/08/28/so-what-happened-to-our-summer/
2__http://www.dailymail.co.uk/news/article-206474/Big-freeze-way
3__http://www.birminghammail.co.uk/news/midlands-news/birmingham-hit-snow-september-unseasonal-9973619