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As temperatures top 100-degrees in the nation's capital, visitors take their shade with them by carrying umbrellas as they tour the U.S. Capitol grounds June 29, 2012 in Washington, DC. Heat warnings are up and people are being told to stay indoors as the heat index will soar to around 110-degrees Friday and Saturday. (Photo by Chip Somodevilla/Getty Images)

Heat wave breaks records

The first seven months of 2012 were the hottest on record in the northeastern United States. According to the National Oceanic and Atmospheric Administration (NOAA), 2012 had an average temperature of 55.3°F, which eclipsed 1998, the previous record holder, by 1°F.