Warmer ThanAverage Spring

Following the colder-than-normal February, March 2007 was more than 5°F warmer than average for the contiguous United States, making it the second warmest March on record in the United States (Figure G).43 In early April 2007, however, near-record to record cold temperatures returned to parts of the central Plains and much of the Southeast. Freezing temperatures broke or tied more than 1,500 daily minimum temperature records between April 4 and April 10.44

Despite this cold snap, the 2007 spring season of March, April, and May ended as the fifth warmest spring on record for the contiguous United States and the warmest globally. The global land-surface temperature was the highest ever for the month of May.45 In fact, according to some estimates, 2007 is on track to be the second warmest year on record globally.46

Figure F. Average Temperature, February200747

Figure F. Average Temperature, February200747

Figure G. Average Temperature, March 2007
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