Melbourne has shivered through its coldest May day in nearly 20 years, with snow falling in Ballarat and widespread icy roads making conditions slippery.
The CBD reached just 10.6C on Wednesday, making it Melbourne's coldest May day since 2000.
In regional Victoria, Ballarat also had its coldest May day in 19 years, reaching just 5.7C and recording a light dusting of snow.
"It was just a few sort of flurries ... nothing that stuck to the ground," the weather bureau's Tom Delamotte told AAP.
At suburban Oakleigh South a driver was killed about 4.40pm when a ute slammed into a tree, with footage from the scene showing ice on the road.
In Victoria's alps, a father and son were rescued after being snowed-in at their hut for two days.
The pair were led through snow-packed trails from Millers Hut, near Mount Wellington, on Wednesday after becoming trapped on Monday.
The warmest place in the state on Wednesday was Mallacoota in the East Gippsland region near the NSW border, which reached 14.9C.
Omeo, also in East Gippsland, hit 7.6C and Hamilton in the state's southwest fell to 8C, while coastal areas recorded large swells.
Temperatures across much of the state fell to 5C below average, and down to 7C below average in some areas.
Showers were recorded along the state's central coast and in parts of Gippsland, including Yarram in southeast Gippsland which received 24.2mm.
Showers are expected to move through Melbourne overnight and into Thursday, with up to 8mm expected.
Thursday isn't expected to bring much relief from the cold, with Melbourne forecast to reach 13C.
A frost warning has been issued for the Northern Country, North East and East Gippsland districts.
"We will see temperatures return to pretty much right on average by Friday across Victoria," Mr Delamotte said.
