The summer of 2018 saw temperatures far above the long-term average in the Northern Hemisphere. It was England’s hottest ever summer, with four heat waves resulting in 1,067 excess deaths. The temperatures experienced in 2018 were typical of those the country is expected to reach by the 2050s.The summer of 2018 saw temperatures far above the long-term average in the Northern Hemisphere. It was England’s hottest ever summer, with four heat waves resulting in 1,067 excess deaths. The temperatures experienced in 2018 were typical of those the country is expected to reach by the 2050s.