After a cracking weekend weather-wise, Melbourne's warm blast of summer won't last.
The hot and humid start to the week will be followed by thunderstorms, chilly temperatures and potentially even snow in the alpine regions.
"We are expecting if we get snow, it will be during Thursday and Friday," Bureau of Meteorology senior forecaster Chris Godfred said.
"The snow should get as low as 1000 metres on Thursday and includes the alpine peaks, Mount Baw Baw and the high plains around there. There may be the outside chance of some flurries on top of Mount Macedon and the Grampians."
The bureau is forecasting a top of one degree at Mount Hotham on Thursday, which will drop to -2 degrees overnight into Friday.
Mr Godfred said snow in November was rare, but not unheard of.
"It's not something you would see every year, but having said that the south-east of Australia is subject to these cold fronts this late in spring… there has even been snow in the Alps around Christmas and February."
Melbourne won't escape the cold snap. The summer-like conditions will continue with a top of 26 forecast for Tuesday, before showers and storms are forecast to arrive in the late afternoon.
By Wednesday, temperatures will start sliding, with an expected top of 20. Then, in true Melbourne style, it's back to just 15 on Thursday and Friday.
"We go from summer through to a humid an unsettled 26 [on Tuesday] and then by the end of the week, wintry temperatures – even the chance of hail and thunder," BoM senior forecaster Dean Stewart said.
Severe thunderstorms are possible on Tuesday in central and eastern Victoria.
Temperatures will start to slowly climb by the weekend, with a slightly warmer 18 forecast for Saturday and 19 for Sunday.
The cold snap will hit most of eastern Australian, with the warm, humid spring weather making way for a sharp cold snap later in the week.
Simone is a breaking news reporter for The Age. Most recently she covered breaking news for The Australian in Melbourne.
Larissa is a reporter and producer