After sweating through temperatures of more than 40 degrees, Victoria can expect a deluge of rainfall this weekend bringing welcome relief for areas hit by bushfires.

Parts of the state's north and north-east could receive more than double their average rainfall for the month in one hit, with the potential of falls of up to 100 millimetres.

This weekend is set to be very, very wet. Credit:Paul Rovere

A tropical low pressure system, which is sweeping across the country from Western Australia, should hit Victoria and meet a cold front later in the week, delivering heavy falls.