Spring in the contiguous U.S. was the warmest on record, capping the hottest 12-month period in data going back 117 years, the National Climatic Data Center said.
The national average temperature from March through May was 57.1 degrees Fahrenheit (14 Celsius), 5.2 degrees above the long-term average and 2 degrees warmer than the previous mark set in 1910, said the data center in Asheville, North Carolina.
The period from June 2011 through May was the warmest 12 months on record in the contiguous U.S. The national average temperature was 56 degrees, surpassing the old mark for May 2011 through April by 0.4 degree, the center said in its monthly “State of the Climate” report.
A record high national average temperature for January through May helped send natural gas to a 10-year low as less was needed to warm homes and businesses.
“The spring of 2012 was the culmination of the warmest March, third-warmest April, and second-warmest May,” the report said. “This marks the first time that all three months during the spring season ranked among the 10 warmest since record- keeping began in 1895.”
Forty-two states had top-10 warmest springs, with the period setting records in 31 states. Record-keeping began in 1895.
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