Wow, so much fascinating info there, I don't know where to start.
Macedonian, sorry you'll be leaving - I'll lose my closest high elevation neighbour! Love your reports, although I did notice they had become fewer and now I can see why. Best of luck with the move and I hope we'll get some Blue Mountains reports.
Lighthouse, yes the distance Isn't great. My late parents and my brother (now in QLD - being swamped in Hervey Bay

) lived in Bellbrae/ Anglesea for decades, so I made the drive regularly. Maybe direct line distance to Aireys would be 100km tops. (On a clear day, I can see the northern Otways/ Boonah area from here!) Mum & Dad kept very good rainfall records but I suspect they've been lost. Mind you, I only have to travel 25 minutes to the Parwan Valley near Bacchus Marsh, and the average annual rainfall halves, so I guess you don't need much difference in distance for dramatic changes in rainfall. I had a local farmer mate with a big property (long since sold), and he reckoned his annual rainfall dropped by an inch a mile heading north to south. Macedonian's mountain vs town reports have usually told a similar story.
In any case, I agree with Macedonian that the late 1990s and 'noughties' (aka the Millenium Drought) was a shocker for its duration, and also its 40C plus days. Somewhere I have a Weekly Times front page, with a meteorologist promising desperate farmers that it would in fact rain again one day. (He was right - eventually!) I have no idea if Aireys etc was spared (could well have been).
And Didjman, I'll be sure to seek your opinion if I ever contemplate leaving here - which is unlikely in the foreseeable future

.