July was the hottest month ever recorded in the United States, the National Oceanic and Atmospheric Administration revealed on 8 August. The average temperature across the continental states was 25.3 °C, one-tenth of a degree above the previous 1936 July record. Compared with the average for 1981-2010, some parts of the country recorded lower temperatures (blue), whereas parts of the Midwest and the northern Rocky Mountains chalked up readings as high as 4.4 °C above (dark red). See go.nature.com/g94jrm for more.
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