Although the temperature was rather unusual to be called a temperature of 'hot' but that figure is the hottest temperature of the South Pole.
As an illustration, the coldest temperature in the region reached approximately -117 degrees Fahrenheit or -82.8 degrees Celsius. Temperature occurred on June 23, 1982.
In its official statement, says SSEC, record the previous hottest temperature in the Antarctic region occurred on December 27, 1978. At that time, the temperature reaches 7.5 degrees Fahrenheit or -13.6 degrees Celsius.
Quoted from FoxNews, January 2, 2012, the average temperature during December and at the South Pole is -15.7 degrees Fahrenheit (-26.5 degrees Celsius).
For information, the agency has the South Pole record data from their post in Amundsen-Scott South Pole Station since 1957 ago.