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Heat wave

Jerome Delbridge of Keep Indianapolis Beautiful uses a fire hose to water trees along the interstate in downtown in Indianapolis, Thursday, June 28, 2012. Keep Indianapolis Beautiful is urging residents to water their trees as temperatures top 100 degrees in Central Indiana. (AP Photo/Michael Conroy)

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.