Temperature anomalies

The eastern United States and Canada have had temperatures far below average so far in 2014. (National Climatic Data Center / June 23, 2014)

It has been a year of near-extremes when it comes to weather in Baltimore -- the fifth-coolest and sixth-wettest on record. It is meanwhile shaping up to possibly be one of the globe's warmest years on record.

The average temperature of 43.5 degrees at Baltimore-Washington International Thurgood Marshall Airport from January through May is 2.5 degrees below normal, according to a monthly National Climatic Data Center report released Monday. Rainfall of 23.6 inches through May is meanwhile 6.6 inches above normal.

Those anomalies rank as the fifth- and sixth-largest, respectively, out of 75 years on record.

The temperature anomaly is similar across much of the eastern U.S., after the winter of the "polar vortex" and a relatively cool spring after that. NCDC temperature anomaly maps show a cool zone for the eastern half of the country, with more moderate temperature differences over most of the rest of the world.

Overall, though, global temperatures are running more than 1 degree above average, the fifth-warmest first five months of any year on record, according to NCDC.