Herald Sun: WE may be wondering where the sun is this December, but it has been our 15th-hottest year on record, according to the world’s peak weather body. The World Meteorological Organisation yesterday released its results for the year, which showed that Australia was heading for an average temperature of 22.18C for the year, 0.37C warmer than average. Globally, we are experiencing our 10th-hottest year on record and have an average temperature of 14.31C, which is 0.31C above …