For the second time in a week snow has fallen at Mount Hotham and Falls Creek, while rain has swept across the wider Border area in an unusual start to summer.
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Bureau of Meteorology senior forecaster Steven McGibbony said it was a record breaking start to the month in many parts of Victoria, including Yarrawonga and Mount Hotham.
Mount Hotham's Chris Hocking said about 30cm had fallen overnight, with temperatures dropped as low as -2.5 in blizzard like conditions.
Yarrawonga recorded its coldest December daily maximum temperature since records began 26 years ago with the mercury peaking at just 14.3 degrees on Sunday.
At Mount Hotham airport, the maximum temperature reached was 7.7 degrees, the lowest December maximum since records began 19 years ago.
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Mr McGibbony said the temperature did not get above 15.8 degrees in Albury-Wodonga on Sunday.
He said the last time a maximum temperature that low was recorded in December was on December 27, 1993, when it reached a top of just 14.9 degrees.
The unseasonable snowfall caused road closures in the alpine region.
"It's unusual but it's not unheard of," Mr McGibbony said.
"When severe cold fronts come through we can see a dusting of snow in summer.
"But looking at it, it may be as much 10 to 20mm in some places, which is certainly more akin to winter conditions than summer."
Mr McGibbony said the region was experiencing a significant cold front caused by a high pressure system over southern Western Australia.
He said it would stay cool across most of this week but temperatures would gradually increase and by Thursday would be back in the mid-to-high 20s.
Overall summer is expected to be warmer and drier than usual on the Border.
The bureau's three month outlook shows it is unlikely Albury-Wodonga would receive more than 145mm of rain, while there is a 87 per cent chance the region will record a median maximum temperature above 31 degrees.