Fresh snow will fall across Australia's ski resorts at the end of this week, just in time for the school holiday rush.

After a relatively dry and sunny week in the alps, a pair of snow-bearing cold fronts will sweep across southeastern Australia on Friday and Saturday.

While warm air ahead of the approaching fronts will cause some snowmelt and unwelcome rain, snow will descend on the mountains between Friday and Sunday. The snow will initially be confined to areas above about 1500m on Friday, before dropping below 1000 metres on Saturday.

At this stage, the pair of fronts is expected to bring 20-40cm of fresh snow to the main ski resorts between Friday and Sunday, with the heaviest falls likely to occur on Saturday. Some areas of the main ski resorts could see half a metre of natural snow accumulation by Sunday, particularly in places that are exposed to snow blowing in from the back country.

Cold southwesterly winds behind the fronts will cause some light snow showers during Sunday, before clearer skies and lighter winds return at the start of next week.

The impending snow comes at the start of the school holidays in NSW and in the middle of the school holiday break in Victoria.

Gale force winds may cause blizzard conditions in the alps at times from Thursday into the weekend, so be sure to check the latest warnings if you are heading into the mountains.