Chilly nights with inland frosts are likely across a large portion of Australia this weekend, with the potential for the mercury to reach the freezing point in all states and territories except Western Australia.

After a strong but relatively fast-moving cold front whipped through the southeast corner of the continent on Thursday, Australia’s weekend weather will be dominated by a strong high pressure system centred over the Great Australian Bight.

This stable set-up will provide mild, pleasant daytime weather across much of the country for those hoping to enjoy the outdoors this weekend. It also contains the classic ingredients for frosty mornings away from the coast: a cool airmass, clear skies, and calm overnight conditions.

Let’s take a quick look at the potential for frost in each state:

Image: Synoptic chart for Saturday, May 9, 2026, showing the strong high pressure system dominating Australia’s weekend weather. Source: Weatherzone.

New South Wales/ACT

Obviously the Snowy Mountains and nearby areas can expect a crisp blanket of frost on both Saturday and Sunday mornings. That includes Canberra, which should fall to 0°C both days.

The Central and Northern Tablelands and even the Upper Hunter Valley can also expect minimums around zero, although daytime highs should rise to around 20°C at many locations.

Image: Daily Forecast for Canberra, ACT, on the Weatherzone app.

Victoria

The Victorian high country is another area where you’d expect sub-zero temperatures in the wake of a cold front.

Frosty mornings are also possible in some other inland forecast districts in Victoria, although the overnight chill will be negated slightly by moderate winds and some very light remnant showers in the westerly stream behind the cold front.

Image: Mt Buller, Victoria, on the morning of May 8, 2026. Source: ski.com.au.

Tasmania

As with Victoria, persistent southwesterly winds will be just strong enough to keep temperatures from plummeting below zero across the majority of the state, but elevated locations will still see minimums around freezing.

Queensland

When the Northern Tablelands of NSW are in for a frosty one, it’s usually a safe bet that the Granite Belt, just over the NSW border, will be almost as chilly.

That’s the case this weekend, with Stanthorpe set to reach a minimum of 1°C on Saturday morning.

Interestingly, the thermometer in a Stevenson screen (the shelter that houses weather instruments) is generally located around two metres above the ground. The air at ground level is often significantly colder, which is why you’ll sometimes observe frost when the official temperature is slightly above freezing.

Northern Territory

Frost is on the forecast for Alice Springs, with a Saturday morning minimum of 0°C expected. Other parts of the southern NT will be a touch warmer overnight, including Yulara at the base of Uluru, which is expecting a low of 4°C on Saturday morning.

South Australia

It’s likely that frost will occur in some parts of SA, but you might need a magnifying glass to find it. The southeast is normally the coldest part of the state, but it will be affected by similar conditions to Victoria, with just a hint of breeziness and humidity preventing freezing overnight lows.

The best chance of frost is in SA’s North East Pastoral and North West Pastoral forecasts districts, where the mercury should fall to 2°C or 3°C near the NT border.

Western Australia

While most of WA’s inland can expect cool nights this weekend with single-digit minimums, it’s unlikely that it’ll be cold enough for frost, as the airmass over the state will have picked up a little warmth from the centre of the continent after circulating anti-clockwise around the high in recent days.