April was a 12th consecutive month during which average temperatures across the globe hit record highs, climate scientists said Wednesday.

That is the longest streak of records in 137 years of data collection, they said.

Average temperatures across both land and ocean were nearly 2 degrees warmer than the 20th century average of 56.7 degrees, according to a monthly report by the National Centers for Environmental Information. That broke a record set in 2010 by half a degree.

So far, 2016 is on track to be significantly warmer across the globe than 2015 -- the warmest year on record. Average temperatures from January through April are more than 2 degrees above the 20th century average for that period and half a degree warmer than the record-setting start to 2015.

Record-setting temperature anomalies are being recorded across Alaska, southern Africa, southern Europe and throughout the Indian Ocean. Above-normal averages also stretch across all six inhabited continents.

In Baltimore, temperatures are averaging more than a degree above normal through April, though the chilly weather that has dominated this month is sure to drop that average.

The first four months of the year averaged 43.3 degrees at Baltimore/Washington International Thurgood Marshall Airport, compared to the norm of about 42 degrees, according to National Weather Service data.

May is running 4.7 degrees below normal at BWI through Tuesday.