We hope you have enjoyed the temperatures this Spring, as the U.S. has finally experienced a break from the heat.
Climate statistics for the month of May and the Spring months of March through May were released in the latest State of the Climate report. The D.C. area was actually slightly above normal temperature-wise for the month of May because of the three 90 degree days to end the month. Otherwise, it was a very changeable month with high temperatures in the 80s one week and 60s the next. Reagan National even recorded two days with lows in the 40s on the 24th and 25th of May, which was the latest such period of temperatures that cool in over 30 years.
Above is a look at the Spring temperature ranks for the United States. Much of the U.S. experienced its top 10 coolest Spring on record from the upper Midwest to the Southeast. The D.C. area was slightly closer to normal for temperatures and the Western U.S. including California and Arizona were well above normal.
See the full report here: NOAA National Climatic Data Center, State of the Climate: National Overview for May 2013
Overall, this was the coolest Spring period since 1996, and the 38th coolest Spring on record.
The above-average precipitation and below-average temperatures in the north-central United States were associated with a spring snow cover extent that was above average. According to data from the Rutgers Global Snow Lab, the spring snow cover extent was the eighth largest on record and the largest since 1984.
According to the report, temperatures for the year are now averaging 0.2 degrees C above normal. Although temperatures are still cooler than average for the year for much of the Midwest, Plains and Southeast states, near-normal to above average temperatures have been noted through the rest of the country.
As far as precipitation, it has been both good and bad. Record precipitation across the Midwest has caused flooding along many rivers including the Mississippi and Illinois Rivers. On the otherhand, California has been experiencing its driest month on record which has contributed to conditions enhancing the threat for forest fires. The Drought Monitor below continues to show exceptional drought for much of the western Plains and through the Southwest though areas along and east of the Mississippi are in good condition entering summer.