The NOAA US Climate Extremes Index shows that 2012 maximum summer temperatures were tied for the highest on record.
This is utter nonsense. According to GHCN US data, the summer of 2012 had the 21st hottest maximum temperatures, was more than 1C cooler than 1936, and was cooler than most of the years in the 1930s.
The next graph overlays the HCN data on the CEI data. The match isn’t too bad until about the year 2000, when NOAA started fabricating data to pump the numbers up.
NOAA shows the summer of 2006 as being 7th hottest on record, when in fact it was the 82nd hottest.
The EPA says that summers in the 1930s were much hotter than any summers prior to 2009. Why does NOAA think they can get away with lying about this?
Heat waves occurred with high frequency in the 1930s, and these remain the most severe heat waves in the U.S. historical record (see Figure 1)