Weather Experts: U.S. Summer Hottest In Past 75 Years

(CNN) -- The summer of 2011 was the second hottest on record for the United States, and the hottest in 75 years, government weather experts said Thursday.

Louisiana, New Mexico, Oklahoma, and Texas experienced their warmest summers ever, with several states seeing an average of more than 86 degrees, scientists with the National Oceanic and Atmospheric Administration said.For meteorological purposes, summer consists of the months of June, July and August.

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