Charts: 1938 - 1941 Global Average Temperatures
"2016 will make a hat trick for 2014-16: three years in a row setting a new record. That’s rare. With the exception of 1939-41, when the NOAA time series was barely in statistical adulthood, this is only time the modern record yields three straight 'warmest years on record.'"
Please note, Global and hemispheric anomalies are with respect to the 20th century average.