Steven Goddard (whose real name is Tony Heller) has a blog post claiming it's the "Coolest Summer on Record in the US." How did he come up with such a crazy claim? Well, he ignored the corrections and adjustments that scientists have made to improve the accuracy of the past century's climate record (calling the adjustments "tampering",) and he only counted the "frequency of 90 degree days," not the actual temperatures.
This has been spread pretty widely through social media, which is unsurprising as it appears to be (for those who fail to check their sources) a very counter-intuitive yet believable "fact." But of course, it's not a fact at all.
AP's Seth Borenstein debunks it in just one tweet: "False name denier wrongly claims 'coolest summer on record in the US;' Facts: 1. Summer not over & June 33rd warmest http://1.usa.gov/..."
The longer explanation of why adjustments are necessary is provided by this NOAA FAQ.