The globally-averaged temperature for 2013 tied as the fourth warmest year since record keeping began in 1880. It also marked the 37th consecutive year with a global temperature above the 20th century average. The last below-average annual temperature was 1976. Including 2013, all 13 years of the 21st century (2001-2013) rank among the 15 warmest in the 134-year period of record. The three warmest years on record are 2010, 2005, and 1998. Read more...