Perth set for scorching 43C Saturday, Pilbara town of Onslow forecast to reach over 50C PERTH set for a scorching Saturday maximum of 43C while parts of the Pilbara town may push past 50C tomorrow. PERTH might be set for a scorching weekend with a Saturday maximum of 43C but spare a though for the people in the Pilbara town of Onslow. The town has roasted through one of its hottest days on record, with temperatures soaring to an almost unbearable 48.7C. And forecasters are warning of an even hotter day tomorrow, with the national heat record of 50.7C likely to come under threat. It peaked at 48.7C at 2.12pm. The Bureau of Meteorology predicts the Pilbara region around Emu Creek will potentially reach more than 50C tomorrow afternoon. Onslow wasn't alone, with notorious hotspot Mardie chalking up a top of 47.5C today, while Learmonth, Paraburdoo, Roebourne and Telfer all pushed past 44C. Temperatures higher than 50C have been documented three times in Australia since records began over a century ago. Mardie was the most recent to reach the level, in 1998, failing to beat the record set in the South Australian outback town of Oodnadatta on January 2, 1960, which reached 50.7C. That record was threatened just last week during a heatwave in outback South Australia. In Perth, the forecast has been updated and it's predicted that mercury will now reach 43C on Saturday before cooling to a relatively mild 35C on Sunday. A cooler change is forecast for Monday with a top of 30C predicted. This most recent spate of hot temperatures comes as a new report released today by the Climate Council confirms 2013 was Australia's hottest year ever since weather records began in 1910.