At 7am this morning, as you were dressing for temperatures of 24 degrees, snow was falling at Perisher. It dropped to zero degrees overnight, which was the cause of the dump. Summer arrives in 25 days.

The late fall comes at the same time as heavy rain and storms hit the New South Wales South Coast and Sydney’s southern suburbs.

Locals are scratching their heads.

A video posted by Perisher Resort on Facebook at 9.40am shows snow falling onto an already-white ground, and heavy fog. Seven centimetres of snowfall was recorded by lunchtime.

Although it’s hard to believe, snow at this time of year is not that uncommon.

“Although we don’t [usually] see a dumping of snow like this, it’s not particularly unusual,” says Adam Mordan, a senior meteorologist from the Bureau of Meteorology (BoM). “At the moment, we’ve got a deep upper low-pressure system sitting over southern New South Wales, so the air mass in the upper atmosphere is very cold,” he says.

It’s also not uncommon to see “strong bursts of cold air that may bring some snow well into late spring, even into December.”

At the time of publication, it is still only 1.7 degrees Celsius in the valley. Snow is expected to continue falling into the night, and temperatures are predicted to reach a low of minus four.

You can watch the Perisher live snow feed here: