Temperatures forecast for as low as 6 degrees below the August average in Adelaide and Melbourne this week, as a cold front leaves a chilling airmass in its wake.

A cold front and trough are expected to cross Australia's south east late on Monday morning, bringing a very cold airmass to the region along with some gusty onshore winds; only to add to the chill. While high pressure looks to build in the wake of this system, a lingering trough may continue to bring some partly cloudy conditions, limiting daytime heating, especially in Melbourne. A top of just 10 degrees is forecast for Tuesday in Melbourne, 5 degrees below the average. With some at times gusty southwesterly winds expected and possible showers and thunderstorms, it may potentially feel 2-3 degrees cooler. 

With clearer conditions expected in Adelaide, a chilling morning can be expected on Wednesday, a low of just 2 degrees forecast; 6 degrees below the August average. Clear skies and light winds will linger into Thursday with a low of 4 degrees expected, before a low pressure system and trough move over South Australia, continuing their run of cool days with cloud cover and showers keeping temperatures to a minimum. 

These cool conditions in Adelaide and Melbourne are expected to linger until early next week, with daytime temperatures remaining below average and days seeming rather gloomy with thick cloud cover.