The National Oceanic and Atmospheric Administration has indicated that
the average temperature for the contiguous 48 United States in 2007 was officially the tenth warmest on record. This information was collected by scientists at NOAA's National Climatic Data Center in Asheville, North Carolina. The agency also determined the global surface temperature last year was the fifth warmest on record.
The average U.S. temperature for 2007 was 54.2 degrees F; 1.4 degrees F warmer than the 20th century mean of 52.8 degrees F. For Alaska, 2007 was the 15th warmest year since statewide records began in 1918.Six of the 10 warmest years on record for the
contiguous United States have occurred since 1998, part of a three decade period in which mean temperatures have risen at a rate near 0.6 degrees F per decade.