Toni Doherty gave him water and wrapped him in a blanket after finding the injured koala on the Oxley Highway west of the New South Wales state town of Wauchope.
Victorian authorities have declared a code red fire danger for parts of the state for the first time since 2010, coupled with a moderate thunderstorm asthma warning for all but one district statewide.
Thousands of people have been left without power and schools were closed in high risk areas as residents prepared to evacuate as even more devastating bushfires sprung up in South Australia state.
By early afternoon, dozens of fires were burning across the southeastern state of Victoria and temperatures of 40.9 Celsius (105.6 F) in Melbourne, its capital, matched the hottest day on record in 1894, Australia's weather bureau said.
The RFS revealed more than 600 homes had been destroyed by fire across the state so far this season, with more than 500 of those lost in the past fortnight.
The country is bracing for challenging fire conditions to continue throughout the Southern Hemisphere summer.
"You are in danger, act now to protect yourself", fire authorities said in an alert.
Family explains why they brought uncle's body to Old Mutual
It is understood that the outstanding death benefit was paid instantly following the visit from the family with the deceased in a body bag.
Justin Trudeau unveils new cabinet with focus on national unity
Quebec Liberals have 12 seats at the cabinet table, and new House Leader Pablo Rodriguez becomes the new Quebec lieutenant. Winnipeg MP Jim Carr, a minister over the past four years who is now being treated for cancer, is no longer in cabinet .
Senior state advocate killed after being accidentally shot in KZN
Elaine Zungu , director of public prosecutions in the South African province of KwaZulu-Natal, confirmed Watt's death on Monday. According to her LinkedIn, Ms Ferreira-Watt was a Senior State Advocate for the National Prosecuting Authority.
The fires have been exacerbated by soaring temperatures, strong winds and the worst drought in decades.
Residents will face fines if they use hoses to water their gardens and wash their cars.
The unrelenting conditions have sharpened attention on the climate change policies of Prime Minister Scott Morrison, who rejected any link.
Australia, he said, was "doing our bit as part of the response to climate change", and sought to frame the issue as a global concern.
The country committed to cut emissions to 26-28 percent below 2005 levels by 2030 under the 2016 Paris climate accord, but emissions have risen every year since then.
Form for signing up for free newsletter.