Some Queensland towns shivered through overnight temperatures 8C below the monthly average with the mercury sitting at a below freezing -2.2C in Applethorpe and Roma.
A freezing cold snap will continue to batter Australia s southeast until Wednesday when the weather is expected to ease and return to more bearable temperatures.
Canberra woke up to a blast of icy weather on Sunday morning as the mercury clocked just -5.4C and our capital city is expected to reach 0C later tonight.
The Bureau of Meteorology said while Canberra experienced its coldest day of the year so far, a series of cold fronts sweeping across the country have left many states grabbling with colder-than-usual temperatures.
Canberra woke up to a blast of icy weather on Sunday morning as the mercury clocked just -5.4C (pictured: people riding bikes in Canberra)
The chilly weather in the Victorian capital continued throughout the day with the mercury sitting at just 12C by 3pm, marking the coldest day of the year for the city.
Australians are bracing for the autumn sun to come to a sudden halt this weekend as a cold blast of air sweeps across the country and the mercury plunges as low as -5C.
The Bureau of Meteorology has warned a cold front is moving eastwards across the south-east coast - bringing icy, wet and snowy conditions to millions of residents.
The chilly conditions will last four days and affect New South Wales, South Australia, the ACT, Victoria and Tasmania, the bureau said.
Sub-zero temperatures are expected to hit Tasmania, with snow to hit areas with an elevation as low as 500 metres above sea level.