[5] He lived in the United States until the age of 10, when he and his family moved to Melbourne, Australia.
In 1972, he received the Vinerian Scholarship as the top graduate of the Bachelor of Civil Law program at the University of Oxford.
In 2017, Weinberg was appointed an Officer of the Order of Australia for his distinguished service to the judiciary and to the law, particularly through reforms to criminal law and procedure, to legal education in Victoria and to the administration of justice in Fiji and Norfolk Island.
[10] In 2018, he presided over the jury trial of Dimitrious Gargasoulas, the perpetrator of the January 2017 Melbourne car attack, which killed six people and injured 27.
[13][14] Following the release of the Brereton Report, in December 2020, Weinberg was appointed by Home Affairs Minister Peter Dutton as the Special Investigator to investigate alleged war crimes committed by Australian soldiers in Afghanistan.