Here I'll put what data I can glean from the met.system and NA diary to show the average conditions at the AAT.
Monthly average temperatures
The following animated GIF is from a simple arithmetic averages of 4 years worth (2009-2012) of the daily temperatures recorded by the AAT met.system. Also included is the barometric pressure. The data are a bit granular, there being quite large shifts between some months, and there are no statistics to go with it to show the range - but perhaps one day...
The individual frames are:
Page last updated 2013/07/26
Steven Lee sl at aao dot gov dot au