The R package rattle provides a dataset that I have been collecting over a few years now from the Australian Bureau of Meteorology. Like most of the datasets in rattle it is also available as a CSV file as part of the package (as well as a proper R dataset) and can also be downloaded from the Internet at http://rattle.togaware.com/weatherAUS.csv
The dataset has been sourced from the bureau since about 2008 for nearly 50 weather stations, some of which we can see on the map below which comes from the bureau:
Graham @ Togaware