July was the hottest month ever recorded in the US, with repeated, scorching heatwaves across much of the country helping shatter all previous monthly temperature records stretching back over the full 132 years of reliable measurements.
Last month’s average temperature was 3.3F (1.8C) higher than the 20th century average for the contiguous United States, which excludes Alaska and Hawaii, according to new data from the National Oceanic and Atmospheric Administration (Noaa).
