Victorians are sweltering through a hot and humid Australia Day long weekend as authorities urge people to stay hydrated and look out for each other amid soaring temperatures.
Residents in Victoria's Mallee and north central region have been advised to prepare for extreme heat from Saturday right up until Monday.
The temperature in the north central region is expected to reach a maximum of 38C on Saturday, while Mildura and Swan Hill are expected to reach temperatures in the low 40s.
Authorities are urging people to take preventative action in the heat and stay cool.
People should also check on friends and family who are most at risk of being affected by a heat-related illness, such as people over 65, babies and those with pre-existing medical conditions.
"Important this weekend; keep cool, stay hydrated and protect yourself from the sun," Emergency Management Commissioner of Victoria Craig Lapsley tweeted on Saturday.
The weather is expected to remain hot, humid and hazy across Victoria all weekend as a result of a high pressure system over the Tasman Sea that is directing a warm northeasterly airstream across the state.
A cold front further south is not expected to reach Victoria until Sunday night, before it moves across other parts of the state on Monday.