Sky News Australia | Sweltering forecast for WA Sky News Australia Updated: 04:54, Thursday January 9, 2014. Sweltering forecast for WA. Forecasters are warning Western Australia's Pilbara region could set a new record today for the hottest temperature in Australia. The weather bureau has assessed the Pilbara region ... Perth set for scorching 43C Saturday, Pilbara town of Onslow forecast to reach ... WA swelters with forecasts for 50C day |