Saturday will be a total fire ban day for the Wimmera and Mallee.
Temperatures are expected to rise beyond 40 degrees across the region on Saturday after a similarly hot day on Friday.
The total fire ban means no fires can be lit in the open air between midnight Friday and midnight on Saturday.
The Country Fire Authority has also advised people living in areas at risk of fire to activate their bush fire plan.
CFA District 17 has also urged farmers not to harvest during the hottest part of the day on Friday.
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