So Long, D.C.
Washington, D.C. vital statistics: Population (2017 estimates): 693,972 (D.C. proper); 6,131,977 (metro) Latitude & longitude: 38˚ 54′ 17″ N, 77˚ 00′ 59″ W January average temperature: High 6˚C (43˚F), low -2˚C (29˚F) July average temperature: High 31˚C (88˚F), low 22˚C (71˚F) Time zone: GMT-4 (Eastern Daylight Time; EDT) Language: English Currency: U.S. Dollar ($) Average