© NOAA/NCEI
May 2018 was the hottest of any May in 124 years of recording keeping for the continental United States, eclipsing the extreme heat of that month in the 1930s during the Dust Bowl era.The average temperature for the Lower 48 states last month was 65.41 degrees Fahrenheit, 5.21 degrees Fahrenheit above the 1901-2000 average, according to the
state of the climate report released by NOAA on Wednesday.
That knocked out May 1934 for the warmest May on record. Rounding out the top five warmest Mays are 1936, 2012 and 2000.
Eight of the 12 calendar months have now notched warmth records since 1998: January (2006), March (2012), April (2006), May (2018), June (2016), September (1998), November (1999) and December (2015).
Last month, Arkansas, Illinois, Indiana, Kentucky, Missouri, Ohio, Oklahoma and Virginia broke state warmth records. Another eight states from Washington to Rhode Island had their second-warmest Mays.
All told, May 2018 ranked among the top 10 warmest on record for 40 of the Lower 48 states. No state was colder than average in May.
More than 8,590 warm temperature records were broken or tied last month at individual weather stations across the U.S., NOAA said. The number of cold temperature records broken or tied in May pales in comparison at just over 450.
Last month was a reversal from April 2018, which
ranked as the coldest in more than two decades.
The waves of cold air that kept the central and eastern states shivering in April gave way to record or near-record warmth in some of the same areas.
Comment: See also these other recent reports: Global cooling: June snowfall for Mt. Washington in New Hampshire
Global cooling: Snow falls in June on Charlottetown, Canada
Snow follows record breaking May heatwave in northern Sweden