Melbourne should reach 37 degrees [98.6] on Friday before cooler weather brings moderate temperatures for the next five days, according to current forecasts from the Bureau of Meteorology. A day of total fire ban has been declared for New South Wales and Victoria for tomorrow.
Sydney's temperatures are predicted to climb to 33 [91.4] and 35  on Friday and Saturday, respectively, before an expected cool change brings relief on Saturday afternoon. Regions to the west, such as Penrith, though, can expect to swelter with peaks of 41[105.8] and 42 [107.6] on those two days.
As authorities battle fires in both states, the impending weather pattern appears to be less threatening than earlier this week. "Winds are not expected to be as strong as last Tuesday's," Julie Evans, a senior meteorologist at the bureau, said.
Records, though, continue to be broken, with Leonora in central Western Australia yesterday posting the highest temperature during the current heatwave, which began late last year.
Leonora hit 49 degrees [120.2], breaking its previous record set for the location just a day earlier at 48.3 [118.9]. The 47.8  level reached on Monday matched a high that had stood for about 55 years.
Inland regions of NSW, such as Tibooburra, will come close to those levels, with 48 [118.4] predicted for Sunday. Victorian towns such as Mildura and Swan Hill, meanwhile, may see peaks of 42 [107.6] during the next ramp-up on Friday.
"It's these big blocking highs pushing the cold fronts south," Melissa MacKellar, a meteorologist with Weatherzone, said. "The heat just keeps recycling."I'm trying to imagine the hospitals, especially the emergency departments. Here's a Beat the Heat feature on the New South Wales Department of Health website. And here's the NSW Rural Fire Service page. Meanwhile, the NSW opposition has complained about the lack of air-conditioning upgrades at Maitland Hospital.