Spring is warmest on record for Lower 48 states

LOS ANGELES — May was so warm that it helped shatter weather records for the Lower 48 states going back to 1895.

According to data released Thursday by the National Oceanic and Atmospheric Administration, temperatures in the U.S. have been high enough to make it the warmest spring on record, the warmest year to date and the warmest 12-month period as well.

“This warmth is an example of what we would expect to see more often in a warming world. Understanding that the United States and the rest of the planet are warming along with preparing for eventualities like this is one way our nation can become climate smart,” said Deke Arndt, chief of the climate monitoring branch of the National Climatic Data Center.

The changes were so large that the effect goes beyond just the usual griping and carping about the weather.

How meteorological cycles work play significant roles in the macroeconomic world – in agriculture, energy consumption and even employers’ decisions on whether to hire more workers.

For example, the warmer period has caused dislocation in the fruit-growing season in the East. Some economists suggest that the milder winter allowed employers to hire workers sooner, making recent spring unemployment numbers look soft. And that, of course, has the potential to influence elections.

According to the center’s data, the average temperature in the contiguous United States was 64.3 degrees, the second-warmest May on record. Meteorologists see spring as the three-month period beginning in March and running to the end of May.

This year, the average spring temperature for the 48 states was 57.1 degrees – 5.2 degrees above the average from 1901 to 2000.

Twenty-six states had May temperatures ranking among their 10 warmest, and higher-than-average temperatures were recorded everywhere except the Northwest. This year beat the previous warm spring by 2 full degrees, which in weather circles is akin to a boulder tossed into a pond.

Record and near-record warmth dominated the eastern two-thirds of the nation during spring. Thirty-one states set records for the season, and 11 additional states had spring temperatures ranking among their 10 warmest. Only Oregon and Washington had spring temperatures near normal, the weather service reported.

The nation was also drier than average, according to the data. The nationally averaged precipitation total of 2.51 inches was 0.36 inches below average for May.

But the patterns were mixed during May. The East Coast and Upper Midwest were wetter than average. North Carolina, South Carolina, Vermont, New Hampshire and Minnesota had May precipitation totals among their 10 wettest.

Meanwhile, dry conditions prevailed across the Mid-Mississippi River Valley, southern Plains and parts of the West. Arkansas, Missouri, Kansas, Nevada and Utah reported May conditions among the driest in their histories.

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