[Rosie] Dramatic changes are quite common in Melbourne. In mid-December I was out at 5pm and the temperature was about 34, iirc. As I walked home I noticed a distinctly chilly wind; by 5:45 the temperature was 22. (flerdle may remember the temperatures more accurately than I do!)
I spent longer than I had intended reading the Pea and Honey Recipes game last night - right from the beginning. From it, I can trace (in my case) two job moves and two house moves, a new relationship and a marriage. And it's bloody good quality. Some of it is even excellent. *rejoins game with renewed vigour*
Ah, the dear old BoM. I am not denigrating the organisation, in fact if I could give it some sort of collective hug for the information it supplies so freely I would. Whilst the data included in your link are interesting I found the text a little 'non-BoM' style. By the way, Chez Dujon recorded a pretty normal summer temperature of but 37.9ºC yesterday, although some of the more coastal (offical) sites reported around and about the 43º forecast.