January = 50.7 at Oodnadatta, SA (2 January 1960) and Onslow, WA (13 January 2022)
February = 50.5 at Mardie, WA (19 February 1998)
March = 48.5 at Emu Creek Station, WA (11 March 2019)
April = 45.0 at Port Hedland, WA (1 April 1948) and Marble Bar, WA (2 April 1928)
May = 40.6 at Bidyadanga, WA (6 May 1990)
June = 37.8 at Wyndham, WA (2 June 1962)
July = 37.6 at Wyndham, WA (19 July 1996)
August = 41.6 at Yampi Sound, WA (26 August 2024)
September = 43.1 at West Roebuck, WA (27 September 2003)
October = 46.9 at Port Hedland, WA (22 October 2002)
November = 48.7 at Birdsville, QLD (17 November 1990)
December = 49.9 at Nullarbor, SA (19 December 2019)