In my area at least, we do tend to notice when it gets around 45°C for long stretches of time, we do tend to get a fair bit of rain not too soon after. I think it was Cloncurry that had 40+ days of 40°C and above consecutively, which is a record for Queensland, got drenched in these floods. Not as bad as other remote towns and stations, but there could definitely be a correlation between record breaking temps, then record breaking floods not too soon after.
We've been in a weather pattern called El Nino for a couple years now (drought, high temps) and I am hoping these floods were the end of that cycle and the beginning of a La Nina (wet season, lower temps). Hopefully for the sake of our farmers and cattle, not as intense as this monsoon trough was, or anywhere close to.