Weather Records on 20 October 1975

587 weather records were set or tied worldwide on 20 October 1975. Highest significance: Amcor - Petrie Mill, AU.

Key Facts for 20 October 1975

On 20 October 1975, 587 weather records were set or tied at long-record stations worldwide.
138 were record highs and 65 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 571 daily.
Amcor - Petrie Mill set a daily record precipitation of 97.2 mm (3.8 in) on 20 October 1975.
Across 160 earlier years (1806 to 2025) the same calendar date averaged 456 records.

Record Map

587 stations

587 station records on 20 October 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 October 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Amcor - Petrie Mill	Australia	Record daily precipitation	97.2 mm (3.8 in)	73 of 100 (Major)
Margate Collins St	Australia	Record daily precipitation	149.4 mm (5.9 in)	73 of 100 (Major)
Dagworth Station	Australia	Record daily precipitation	25.4 mm (1.0 in)	72 of 100 (Major)
Banana Post Office	Australia	Record daily precipitation	72.0 mm (2.8 in)	68 of 100 (Major)
Mt Alford	Australia	Record daily precipitation	91.4 mm (3.6 in)	64 of 100 (Major)
Tarome	Australia	Record daily precipitation	87.4 mm (3.4 in)	64 of 100 (Major)
Glenormiston	Australia	Record daily precipitation	35.0 mm (1.4 in)	63 of 100 (Major)
Malboona	Australia	Record daily precipitation	65.2 mm (2.6 in)	62 of 100 (Major)
Betanga	Australia	Record daily precipitation	60.0 mm (2.4 in)	61 of 100 (Major)
Moogerah Dam	Australia	Record daily precipitation	98.9 mm (3.9 in)	60 of 100 (Major)
Richmond Post Office	Australia	Record daily precipitation	52.0 mm (2.0 in)	58 of 100 (Notable)
Manfred Downs Station	Australia	Record daily precipitation	32.8 mm (1.3 in)	56 of 100 (Notable)
Albion Downs	Australia	Record daily precipitation	43.2 mm (1.7 in)	55 of 100 (Notable)
Essex Downs Station	Australia	Record daily precipitation	31.0 mm (1.2 in)	54 of 100 (Notable)
Patroy Station	Australia	Record daily precipitation	58.4 mm (2.3 in)	54 of 100 (Notable)
West Leichhardt Station	Australia	Record daily precipitation	25.4 mm (1.0 in)	52 of 100 (Notable)
Toolebuc	Australia	Record daily precipitation	30.0 mm (1.2 in)	52 of 100 (Notable)
Mt Brisbane	Australia	Record daily precipitation	58.0 mm (2.3 in)	52 of 100 (Notable)
Westbrook	Australia	Record daily precipitation	72.6 mm (2.9 in)	52 of 100 (Notable)
Mullumbimby (Fairview Farm)	Australia	Record daily precipitation	126.0 mm (5.0 in)	52 of 100 (Notable)
Thangool Airport	Australia	Record daily precipitation	42.0 mm (1.7 in)	50 of 100 (Notable)
Bald Hills Post Office	Australia	Record daily precipitation	91.8 mm (3.6 in)	50 of 100 (Notable)
Mt Glorious Fahey Rd	Australia	Record daily precipitation	103.0 mm (4.1 in)	50 of 100 (Notable)
Ashgrove	Australia	Record daily precipitation	66.0 mm (2.6 in)	49 of 100 (Notable)
Bunda Bunda	Australia	Record daily precipitation	49.0 mm (1.9 in)	48 of 100 (Notable)
Stamford Station	Australia	Record daily precipitation	52.0 mm (2.0 in)	47 of 100 (Notable)
Katandra	Australia	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Samsonvale	Australia	Record daily precipitation	78.2 mm (3.1 in)	47 of 100 (Notable)
Cloncurry McIllwraith St	Australia	Record daily precipitation	40.2 mm (1.6 in)	46 of 100 (Notable)
Catumnal	Australia	Record daily precipitation	60.2 mm (2.4 in)	46 of 100 (Notable)
Kalapa	Australia	Record daily precipitation	74.8 mm (2.9 in)	46 of 100 (Notable)
Murphys Creek Post Office	Australia	Record daily precipitation	58.8 mm (2.3 in)	46 of 100 (Notable)
Glen Royal	Australia	Record daily precipitation	101.0 mm (4.0 in)	46 of 100 (Notable)
Diapur (Bleak House)	Australia	Record daily precipitation	37.0 mm (1.5 in)	46 of 100 (Notable)
Drung Drung	Australia	Record daily precipitation	31.2 mm (1.2 in)	46 of 100 (Notable)
Tallawanta	Australia	Record daily precipitation	66.3 mm (2.6 in)	45 of 100 (Notable)
Bangerang North	Australia	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Croydon Township	Australia	Record daily precipitation	46.8 mm (1.8 in)	44 of 100 (Notable)
Wilburra Downs Station	Australia	Record daily precipitation	34.0 mm (1.3 in)	44 of 100 (Notable)
Fernlees Post Office	Australia	Record daily precipitation	65.0 mm (2.6 in)	44 of 100 (Notable)
Moonmera	Australia	Record daily precipitation	67.0 mm (2.6 in)	44 of 100 (Notable)
Morstone Station	Australia	Record daily precipitation	38.6 mm (1.5 in)	43 of 100 (Notable)
Muttaburra	Australia	Record daily precipitation	58.0 mm (2.3 in)	43 of 100 (Notable)
Duchess Hotel	Australia	Record daily precipitation	46.8 mm (1.8 in)	43 of 100 (Notable)
Southport Ridgeway Ave	Australia	Record daily precipitation	48.2 mm (1.9 in)	43 of 100 (Notable)
Ruy Barbosa	Brazil	Record daily precipitation	34.1 mm (1.3 in)	43 of 100 (Notable)
Newry	Australia	Record daily precipitation	43.2 mm (1.7 in)	42 of 100 (Notable)
Pechey Forestry	Australia	Record daily precipitation	66.0 mm (2.6 in)	42 of 100 (Notable)
Sim Jue Creek	Australia	Record daily precipitation	60.6 mm (2.4 in)	42 of 100 (Notable)
Gold Creek Reservoir	Australia	Record daily precipitation	49.6 mm (2.0 in)	42 of 100 (Notable)
Clifton Post Office	Australia	Record daily precipitation	30.4 mm (1.2 in)	42 of 100 (Notable)
Buckingham Downs	Australia	Record daily precipitation	25.0 mm (1.0 in)	41 of 100 (Notable)
Tingha (Crystal Hill)	Australia	Record daily precipitation	49.4 mm (1.9 in)	41 of 100 (Notable)
Tomewin (Border Gate)	Australia	Record daily precipitation	95.0 mm (3.7 in)	41 of 100 (Notable)
Moselle Downs Station	Australia	Record daily precipitation	28.0 mm (1.1 in)	40 of 100 (Notable)
Elwell	Australia	Record daily precipitation	36.0 mm (1.4 in)	40 of 100 (Notable)
Dinmore Post Office	Australia	Record daily precipitation	36.0 mm (1.4 in)	40 of 100 (Notable)
Granada Station	Australia	Record daily precipitation	53.2 mm (2.1 in)	39 of 100 (Notable)
Clutha Station	Australia	Record daily precipitation	41.0 mm (1.6 in)	39 of 100 (Notable)
Bushy Park	Australia	Record daily precipitation	40.4 mm (1.6 in)	39 of 100 (Notable)

Counts by Type and Timescale

587 records

Records set or tied on 20 October 1975 by type: Highest daily maximum 74, Lowest daily maximum 17, Highest daily minimum 64, Lowest daily minimum 48, Heaviest daily rainfall 382, Heaviest daily snowfall 2.

Records on 20 October 1975 by type
Record type	Records
Highest daily maximum	74
Lowest daily maximum	17
Highest daily minimum	64
Lowest daily minimum	48
Heaviest daily rainfall	382
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 20 October 1975 by timescale: all-time 0, monthly 16, daily 571.

How Much Records Were Beaten By

507 broken records

Margins by which the 507 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.7. Ties are not counted.

Top 20 by Significance

20 October 1975

Top 20 records on 20 October 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 October 1975	Amcor - Petrie Mill, AU	daily rain	97.2 mm (3.8 in)	71.3 mm (2.8 in)	85 years	73 of 100 (Major)
20 October 1975	Margate Collins St, AU	daily rain	149.4 mm (5.9 in)	102.7 mm (4.0 in)	85 years	73 of 100 (Major)
20 October 1975	Dagworth Station, AU	daily rain	25.4 mm (1.0 in)	25.4 mm (1.0 in)	90 years	72 of 100 (Major)
20 October 1975	Banana Post Office, AU	daily rain	72.0 mm (2.8 in)	41.5 mm (1.6 in)	85 years	68 of 100 (Major)
20 October 1975	Mt Alford, AU	daily rain	91.4 mm (3.6 in)	62.4 mm (2.5 in)	61 years	64 of 100 (Major)
20 October 1975	Tarome, AU	daily rain	87.4 mm (3.4 in)	68.3 mm (2.7 in)	61 years	64 of 100 (Major)
20 October 1975	Glenormiston, AU	daily rain	35.0 mm (1.4 in)	30.4 mm (1.2 in)	50 years	63 of 100 (Major)
20 October 1975	Malboona, AU	daily rain	65.2 mm (2.6 in)	62.7 mm (2.5 in)	50 years	62 of 100 (Major)
20 October 1975	Betanga, AU	daily rain	60.0 mm (2.4 in)	44.5 mm (1.8 in)	68 years	61 of 100 (Major)
20 October 1975	Moogerah Dam, AU	daily rain	98.9 mm (3.9 in)	76.0 mm (3.0 in)	52 years	60 of 100 (Major)
20 October 1975	Richmond Post Office, AU	daily rain	52.0 mm (2.0 in)	43.1 mm (1.7 in)	36 years	58 of 100 (Notable)
20 October 1975	Manfred Downs Station, AU	daily rain	32.8 mm (1.3 in)	32.8 mm (1.3 in)	87 years	56 of 100 (Notable)
20 October 1975	Albion Downs, AU	daily rain	43.2 mm (1.7 in)	43.2 mm (1.7 in)	56 years	55 of 100 (Notable)
20 October 1975	Essex Downs Station, AU	daily rain	31.0 mm (1.2 in)	29.5 mm (1.2 in)	32 years	54 of 100 (Notable)
20 October 1975	Patroy Station, AU	daily rain	58.4 mm (2.3 in)	45.7 mm (1.8 in)	36 years	54 of 100 (Notable)
20 October 1975	West Leichhardt Station, AU	daily rain	25.4 mm (1.0 in)	23.6 mm (0.9 in)	65 years	52 of 100 (Notable)
20 October 1975	Toolebuc, AU	daily rain	30.0 mm (1.2 in)	28.7 mm (1.1 in)	20 years	52 of 100 (Notable)
20 October 1975	Mt Brisbane, AU	daily rain	58.0 mm (2.3 in)	37.7 mm (1.5 in)	50 years	52 of 100 (Notable)
20 October 1975	Westbrook, AU	daily rain	72.6 mm (2.9 in)	61.9 mm (2.4 in)	16 years	52 of 100 (Notable)
20 October 1975	Mullumbimby (Fairview Farm), AU	daily rain	126.0 mm (5.0 in)	77.5 mm (3.1 in)	32 years	52 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1806 to 1975

Records set or tied on this calendar date in each year from 1806 to 1975. 1975 had 587 records.

Counts for years before the ledger starts come from the same station rules.

Records on 10-20 in each year
Year	Records
1806	1
1835	1
1844	1
1846	1
1847	2
1851	1
1852	1
1858	1
1863	2
1864	2
1866	3
1867	1
1868	2
1872	2
1874	2
1875	3
1876	2
1877	1
1878	1
1880	3
1881	2
1884	1
1885	1
1886	1
1887	1
1888	6
1891	4
1892	4
1893	1
1894	3
1895	4
1896	9
1897	2
1898	7
1899	1
1900	8
1901	7
1902	5
1903	9
1904	13
1905	22
1906	28
1907	32
1908	26
1909	17
1910	31
1911	16
1912	6
1913	38
1914	16
1915	20
1916	72
1917	201
1918	34
1919	19
1920	81
1921	68
1922	83
1923	96
1924	182
1925	247
1926	147
1927	283
1928	92
1929	129
1930	672
1931	125
1932	331
1933	675
1934	422
1935	390
1936	370
1937	189
1938	231
1939	367
1940	757
1941	459
1942	152
1943	501
1944	288
1945	363
1946	310
1947	1,494
1948	320
1949	1,084
1950	619
1951	279
1952	520
1953	1,057
1954	262
1955	529
1956	283
1957	440
1958	461
1959	451
1960	671
1961	479
1962	733
1963	765
1964	598
1965	340
1966	857
1967	511
1968	244
1969	607
1970	710
1971	606
1972	1,724
1973	878
1974	1,122
1975	587
1976	1,304
1977	467
1978	508
1979	1,647
1980	350
1981	1,083
1982	1,191
1983	944
1984	1,562
1985	835
1986	823
1987	590
1988	737
1989	2,092
1990	609
1991	971
1992	1,174
1993	1,238
1994	650
1995	703
1996	1,417
1997	949
1998	683
1999	603
2000	737
2001	589
2002	985
2003	1,761
2004	1,861
2005	1,092
2006	1,170
2007	923
2008	477
2009	786
2010	539
2011	785
2012	945
2013	592
2014	851
2015	523
2016	947
2017	602
2018	394
2019	744
2020	1,010
2021	900
2022	834
2023	1,468
2024	707
2025	326

Download the Data

Data for records on 1975-10-20: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	425
20 to 40	56
40 to 60	15
60 to 80	10
80 to 100	0
100 to 120	1