The drenching adds to an extraordinarily wet 2020, with 374 millimetres falling so far.
In 2019, a very dry year, there was less than a millimetre more over the entire 12 months. Melbourne has about 650 millimetres of rain in an average year.
Five to 15 millimetres will also hit areas that have been starved of rain, such as the north-west and central districts.
Flash flooding is a risk for much of the state, but north-east Victoria is at particular risk.
“It will result in quite sharp, significant stream and river rises,” Mr Parkyn said.
The bureau issued a severe weather warning for heavy rainfall that could lead to flash flooding across the north-east and parts of East Gippsland on Wednesday.
Snow will fall in the alpine region and in the Grampians as low as 800 metres. Some 20 centimetres will fall at Mt Baw Baw. Snow is not expected to hit Melbourne.
The change of seasons may be uncomfortable for people caught unprepared. Alisha Bennett and her four children turned on the heater in their Deer Park rental home for the first time last week and felt … nothing.
“Our landlord says they’ll have it fixed as soon as possible – hopefully on Wednesday, because we’re bloody freezing already,” Ms Bennett said.
“Foxtel and Netflix will be our best friend, I think.”
The state’s Chief Health Officer, Brett Sutton, has told the State Emergency Service people can shelter with family, friends or at relief centres, despite the coronavirus social distancing restrictions, if the weather damages their homes.
The Bureau of Meteorology also warned coastal areas could be inundated due to big swells and the cold front would bring “the full gamut of weather”, including hail.
State Emergency Service chief operations officer Tim Wiebusch said the public must not “flirt with floodwater”.
“Just don’t enter it. You just don’t know what might be lurking,” he said. “It can take as little as 15 centimetres for a small car to float.”
Mr Wiebusch said bike paths and walking tracks would be dangerous in low-lying areas, and alternative exercise would need to be arranged.
Anthony is a sports and general news reporter at The Age.
Michael is a reporter for The Age.