Past 12 months and first third of the year were warmest nation has experienced
Washington, DC–(ENEWSPF)–May 9, 2012. Several warm periods across the contiguous U.S. during April brought the national average temperature to 55°F, 3.6°F above average, marking the third warmest April on record. These temperatures, when added with the first quarter and previous 11 months, calculate to the warmest year-to-date and 12-month periods since recordkeeping began in 1895.
The 12-month period of May 2011-April…
