NOAA officially reports what is more or less already known -- March 2012 was the warmest in modern climate record in the United States. The national average temperatures for this past March was 51.1 degrees, or 8.6 degrees above the 20th Century average temperature and a half degree warmer than the previous record warmest March (1910).
above normal by about a third of an inch, but the East Coast was one of the drier spots in the country...along with the Plains and Rockies. New Jersey recorded its 10th driest March on record, Delaware its 6th driest month on record.
Philadelphia recorded its 2nd warmest March on record and its 4th driest March on record this year.
More: NOAA State of the Climate