Month	Highest Daily	Highest Monthly	Lowest Monthly	Highest Season	Lowest Season
January	54.6 on 21/01/1982	115.0 in 1982	0.0 in various	Summer	Summer
February	120.6 on 09/02/1992	166.3 in 1955	0.0 in various	180.4 in 1954/55	0.8 in 1974/75
March	77.0 on 09/03/1934	145.2 in 1934	0.0 in various
April	66.5 on 30/04/1904	148.8 in 1926	0.0 in 1982,1977,1920	Autumn	Autumn
May	76.2 on 17/05/1926	292.2 in 1929	14.1 in 1964	364.5 in 1947	42.4 in 1983
June	99.1 on 10/06/1920	476.1 in 1945	64.4 in 1993
July	95.0 on 29/07/1987	425.1 in 1958	64.2 in 1937	Winter	Winter
August	73.9 on 14/08/1945	318.3 in 1945	11.8 in 1902	957.1 in 1945	260.0 in 1940
September	51.8 on 14/09/1984	199.1 in 1923	8.7 in 1916
October	68.2 on 18/10/1995	199.9 in 1890	1.0 in 1969	Spring	Spring
November	39.1 on 29/11/1956	73.2 in 1984	0.0 in 1891	364.0 in 1890	52.5 in 1969
December	46.7 on 03/12/1951	80.7 in 1951	0.0 in various
Year	120.6 on 09/02/1992	1338.8 in 1945	508.7 in 1940

Rainfall is in millimetres.

Quality controlled site data: 009034 Perth (January 1880 to April 1992) and 009225 Perth Regional Office (February 1993 to May 1998)
Daily rainfall data obtained from Bureau of Meteorology. Statistics calculated by Michael Bath.