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News Release 09-222

Record Highs Far Outpace Record Lows Across U.S.

Daily record high temperatures occurred twice as often as record lows over past decade

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Histogram superimposed on U.S. map showing the ratio of record daily highs to lows from 1950-2009.

The ratio of record daily highs to lows from 1950-2009 at 1,800 U.S. weather stations.

Credit: NCAR

Download the high-resolution JPG version of the image. (722 KB)

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NCAR scientist Gerald Meehl talks about how climate change is being felt on a day-to-day basis.

Credit: NCAR/National Science Foundation


This decade's warming was more pronounced in the western than the eastern U.S.

Credit: NCAR/National Science Foundation


Much of the nation's warming is happening at night, when record lows occur less often.

Credit: NCAR/National Science Foundation