There is little relief in sight for Melbourne and Sydney commuters as they shiver through one of the coldest weather spells in years.
In Sydney, motorists have had to scrape ice off their windscreens on the frostiest June morning in 27 years.
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At 6am (AEST) it was a chilly 4.3 degrees in the Sydney CBD, colder than yesterday's low of 4.7 degrees.
Further west at Richmond it was a biting minus five degrees.
Bureau of Meteorology spokesman Stephen Stefanac says the icy conditions have come from Antarctica and we're likely to keep shivering until Friday.
A glimmer of relief is in sight for Melburnians, with the weather bureau forecasting today's daytime high to peak at 12 degrees — a few notches warmer than yesterday's near record-breaking chill.
Melbourne was on track to stay under the 9.9 degrees recorded on August 21, 2008, but the temperature reached 10.3 degrees yesterday just after 4pm and then headed back down.
Bureau of Meteorology duty forecaster Michael Efron said the wind-chill made the temperature seem even lower.
"The air mass is so cold and with this cloud cover persisting, there's no chance for it to warm up," he said.
Today's high could top 12 degrees. While that's two degrees higher than chilly Tuesday, it will still feel cold with scattered showers and winds near 30km/h forecast.
A cold air mass from continues to hover over Victoria and is expected to keep the winter cold close by for the rest of the week.
Temperatures are forecast to stay as low as six or seven degrees overnight and peak at around 13 each day.