July was the hottest month ever recorded in the United States.
http://www.bloomberg.com/news/2012-08-08/july-hottest-month-on-record-in-lower-48-states.html
http://www.chicagotribune.com/news/sns-rt-us-usa-heat-julybre8770y2-20120808,0,1794675.story
http://www.weather.com/news/noaa-report-july-20120808
http://www.washingtonpost.com/blogs/capital-weather-gang/post/us-has-hottest-month-on-record-in-july-2012-noaa-says/2012/08/08/0fae675c-e169-11e1-98e7-89d659f9c106_blog.html