At 1.22°F warmer than the 20th-century average, the
first half of 2010 was the warmest on record, according to a
recent analysis by the National Oceanic and Atmospheric
Administration. The average global temperatures for all
months from March through June 2010 were also the
warmest on record.

Source: http://www.eere.energy.gov/news/news_detail.cfm/news_id=16178