NOAA’s National Climate Data Center (NCDC) announced today that 2012 was the warmest year on record for the contiguous U.S in over a century of record keeping. The average temperature for 2012 was 55.3°F. This is 3.2°F above the 20th century average and is 1.0°F above the previous 1998 record. Other temperature notables for 2012…