Some of the hottest temperatures included the outback South Australian town of Maree, where the mercury nudged 49.8C. Some of the hottest temperatures have been recorded in the South Australian outback. Senior meteorologist Dean Narramore said the blistering heat had broken dozens of temperature records across South Australia, NSW and Victoria over the course of a week. “They’re not just 10 or 20 years old, they’re 30, 50, 80 and in some cases 100 years old,” he said. Mr Narramore said average temperatures in Australia were between one to one and a half degrees higher than they were a century ago.