Average July high in New York City is 84. Boston 82. And these are relatively cool places compared to other parts of the U.S. London and Paris July average h

Average July high in New York City is 84. Boston 82. And these are relatively cool places compared to other parts of the U.S. London and Paris July average high is 73-75. And there's a world of difference between 75 and 83. Even if you go all the way down to Toulouse, it's still not as hot as New York. However, it is interesting to note that A/C sale in Europe has been taking off for the past 10-15 years, presumably because it is indeed getting hotter in Europe.