Melbourne is on track to record its hottest October day in four years, while a city in the Victoria’s east could beat a 74-year heat record.

Melbourne is forecast to hit a maximum 35C on Thursday, with the burst of heat extending across the state, fanned by northerly winds.

Meanwhile, Sale in Gippsland in the state’s east is forecast to hit 35C and could break a 74-year heat record, Bureau of Meteorology senior forecaster Michael Efron said.

Sale’s hottest recorded October day was 34.7 degrees in 1945.

“If it exceeds that, it will actually break the record for their hottest October day since records began there,” Mr Efron said.

Melbourne is on track to reach its top late afternoon, with the mercury soaring to 26C by 9.38am.

“We’ll see that well and truly in the 30s I think by late morning, and it should be hitting 35C in the city, probably around that 4pm to 5pm,” Mr Efron said.

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“It could be the hottest October day in four years.”

Melbourne has not reached an October day temperature of 35C since October 6, 2015, when it hit 35.8 degrees.

Most of Victoria is expected to hit the mid 30s, while the hottest spots are mostly in northern Victoria.

Swan Hill, Echuca, Shepparton and Horsham are forecast to reach 36C, while Mildura and Horsham are tipped to soar to 35C and Geelong, 36C.

A warm night statewide is expected, with Melbourne falling to a low of just 22C overnight before reaching an expected top of 34C on Friday.

“We’ll actually see the winds picking up as well, so it’s looking very windy through the Melbourne region late morning on Friday and that’s with a low pressure trough approaching from the west,” Mr Efron said.

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Cloud is expected to increase also throughout the day, with rain and potentially thunderstorms arriving in the city about 11pm.

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Punters could be in store for a soggy day of almost tropical conditions, with at least 10mm in rain tipped to fall across the Melbourne region.

A humid top of around 24C is forecast.

“Moisture coming down from Queensland with help generate those showers and storms,” Mr Efron said.

“It’s quite unsettled on Saturday, not just in Melbourne but eastern Victoria as well, especially those north eastern districts about the ranges,” Mr Efron said.

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He urged travellers to keep abreast of any warnings if heading into unfamiliar territory.

“That rainfall could cause some issues across the state, especially Saturday,” he said.

AAP