Unless the United Kingdom’s average temperatures were to increase remarkably from May 29 until the end of the month, the nation will have the coldest spring it has seen in the last half century. (Photo : Reuters)

Unless the United Kingdom's average temperatures were to increase remarkably from May 29 until the end of the month, the nation will have the coldest spring it has seen in the last half century.

Forecasters from the Met Office, the U.K.'s national weather service, reported the average temperature for the March-April-May season is only 6 degrees Celsius (42.8 F), based on temperature readings between March 1 and May 28.

Assuming the unlikelihood of drastic temperate change as the month ends, the UK will have on record its fifth coldest spring since national recordkeeping began, and the coldest spring the nation has seen since 1962.

"The colder than average conditions have been caused by difference patterns at certain times, but generally this season has seen frequent easterly and northerly winds which have brought cold air to the UK from polar and northern European regions," a Met Office spokesperson told the Independent.

An exceptionally cold March is also responsible for the low average temperatures. The mean temperature in the U.K. for the third month in the year was only 2.2 C (36 F), a solid 3.3 C (38 F) below the long-term average.

In the United States, temperatures were not breaking such long-held records, but the nation did see a colder start to spring than it has in some time.

April was recorded as the 23rd coldest on record in the U.S., registering at 1.4 degrees F below the 20th century average. On average it was the coldest April in the U.S. since 1997, according to the Atlantic Wire, which cited a ream of data compiled by the National Oceanic and Atmospheric Administration.

Click here for a detailed map with spring temperature records of 180 U.S. cities.