2012 was the warmest year on record in the Northern Virginia area, according to data from the National Weather Service.
The average temperature at the airport was 57.9 degrees in 2012—that's 2.6 degrees above the annual normal from 1981 to 2010.
Prior to 2012, the warmest year on record at Dulles was 1998, when the average was 57.1 degrees.
Regan Airport also recorded its warmest year on record with an average high of 61. 5 degrees.
The March 2012 average was 10 degrees above the normal average for that month, the National Weather Service reported.
The high temperature average "would be comparable to the normal annual temperature of Atlanta, Oklahoma City and San Jose, just to name a few locations," the National Weather Service reported.