On the Western Slopes the rainfall gradually decreases, together with the frequency of winter snowfalls. Further to the west the land slowly flattens out to the dry inland plains, marked by cold nights. It is in the far north west where the hottest temperatures in the state most commonly occur during summer, and where the annual mean rainfall drops below 150 millimetres. The region west of a line Bourke to Mildura is classified as arid, with the median rainfall being less than 250 millimetres. Protracted periods of dry weather in one part or another of the State are not uncommon, but simultaneous drought over the whole State has been experienced only very rarely.
Climate data is available in a range of formats to suit particular needs.
Contact the Bureau in your State if you require further information. For Year Yearly Average 8. Users of these web pages are deemed to have read and accepted the conditions described in the Copyright Notice and Disclaimer .