The Guardian’s Datablog has not made that error but it has correlated the Met Office’s monthly data with the terms of office of each British prime minister since Margaret Thatcher:
It appears that under David Cameron it has been colder, and less sunny – but there has been less rainfall too. Under Tony Blair, there was more sunshine and warmer temperatures than the decade before – but more rain. Margaret Thatcher saw a lot more rain and less sunshine – and Gordon Brown saw more sun but colder temperatures.Unfortunately, the data does not show which bits of the weather since 2010 the Liberal Democrats can claim the credit for. Presumably it is those bits that are ‘fairer’.