Snowfall as low as 800 metres has been forecast for Tuesday and Wednesday in the ACT, with even the possibility of snow flurries in areas below that.

Snow is set to continue into Thursday for elevated areas of the ACT such as Mount Ginini and the Brindabellas.

Bureau of Meteorology forecaster Melody Strum said while small amounts were likely to fall in the suburbs, it was possible for several centimetres of snow to fall in mountain areas in the territory.

"Snow forecasts are quite tricky, but in some areas, we could see 20 millimetres of rain, which could lead to 20 centimetres of snow around places like Mount Ginini," she said.

"In areas around 800 metres, we could see a mix of snow and rain.

"Any areas above 800 metres, we should see snow staying on the ground, but for areas below that, it would be difficult for snow flurries to stick around [underfoot]."

The weather system that will past through the ACT is being driven by a cold front connecting with a low pressure system, which will bring Antarctic winds over much of south-eastern Australia.

Showers are expected to arrive on Tuesday afternoon or early evening, bringing with it the first chance of snow in the ACT this season.

Up to 30 millimetres of rain is expected to fall in Canberra on Wednesday, with winds of up to 30km/h, but temperatures will plummet, with a low of 0 degrees and a maximum of 8.

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Ms Strum said Wednesday would bring the best chance of snow falling in Canberra, but some falls were likely later in the week at higher areas.

"Thursday and Friday could see snow above 1200 or 1300 metres," she said.

"The cold front will stay in the area until Thursday, and by Friday we should see some easing, but there will be showers about."

The cold front has also prompted the Bureau of Meteorology to issue a severe weather warning for parts of the Snowy Mountains for damaging winds and a possible blizzard.

Winds of up to 70 to 80km/h with a peak gust of 125km/h have been forecast for areas above 1900 metres on Monday evening and Tuesday.

The bureau said a blizzard may be likely on Tuesday morning, with the NSW National Parks and Wildlife Service recommending back country travel be postponed.

Canberra is expected to reach a top of 14 degrees on Monday and Tuesday, with the chance of showers on Tuesday.

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