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May 2010 Was The Hottest May on Record Worldwide June 18, 2010
May 2010 Temperature Anomnaly Graphic
Vast areas of Earth were much warmer than normal during May 2010.
The trend of exceptionally warm temperatures worldwide that has prevailed since 1985 continued during May, with U.S. experts saying the month was the hottest May on record.

It also marked the 303rd consecutive month that a month was warmer than its 20th century average, according to Deke Arndt, the chief of climate monitoring at the U.S. National Climatic Data Center.

As seen in the graphic to the right, most land areas saw extraordinary warm temperatures. The hottest anomalies occurred in eastern North America, eastern Brazil, eastern Europe, southern Asia, eastern Russia, and much of Africa.

Bucking the trend were much of western North America, central South America, Western Europe and central Asia, where temperatures were below normal.

Image and full report: NOAA