June Ranked the Warmest on Record

Chart-topping year continues in summer months

NOAA highlighted record and near-record warmth in the Southeast, on the West Coast, and in the Rockies, where a total of 16 states reported higher than average temperatures in June. (dog4aday/Flickr)

Analyses by the National Oceanic and Atmospheric Administration (NOAA), NASA, and the Japan Meteorological Agency (JMA) have all reported June 2015 as being the warmest—or tied for the warmest—of any June on record, the Washington Post reported last week

NASA, which based its average temperatures on data from 1951 to 1980, says June 2015 tied with June 1998 for record temperatures. JMA, which released its monthly report last Wednesday, says that four of the past six Junes, including this year’s, have been among the top five warmest. June 2015 was 0.74 degrees higher than the average temperature, based on dates ranging from 1981 to 2010. This is the greatest difference in average of any June on record.

NOAA has been storing weather data in the contiguous United States since the 1880s and reports that the mean temperature in the Lower 48 was 2.9 degrees above the average for the 20th century. The organization highlighted record and near-record warmth in the Southeast, on the West Coast, and in the Rockies, where a total of 16 states reported higher than average temperatures. Given that every month, including June, has ranked among the top four warmest on record, NOAA analysts believe that 2015 is likely to be a record-breaking year.

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