This thread is sure to bring the climate-change skeptic/conspiracy nutters out from under the wood pile.
What possible motivation would BOM for manipulating weather observations?
I've met a few BOM staff over the years and they all appear to have been very serious professionals working to do the best job possible.
If unsure - then test it !!!
Go down to Bunnings, spend ~$100 to buy a portable weather station, locate it near the BOM weather station in question and publish the results. Questions answered.
https://www.bunnings.com.au/our-rang...ather-stations