I drew a blank searching this forum (and all of google) for an answer. What the hell has happened to the BOM weather station on Hotham? It's only been reporting temp for months, which is useless if you're deciding on a day trip up the hill. Has the CFMEU slapped a stop-work order on it or something? Does someone need to put 20c in the meter box?
Most of the observations are taken from Hotham Airport AWS which is really not indicative of Hotham itself. In the past I have shot an email off to BOM with questions such as yours and they do reply. Best to get an answer from the horse's mouth. Interested to know what they say. Start here http://www.bom.gov.au/other/feedback/