Weather Records on 20 October 1966

857 weather records were set or tied worldwide on 20 October 1966. Highest significance: Stanley Post Office, AU.

Key Facts for 20 October 1966

On 20 October 1966, 857 weather records were set or tied at long-record stations worldwide.
71 were record highs and 275 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 34 monthly and 823 daily.
Stanley Post Office set a daily record precipitation of 45.2 mm (1.8 in) on 20 October 1966.
Across 160 earlier years (1806 to 2025) the same calendar date averaged 455 records.

Record Map

857 stations

857 station records on 20 October 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 October 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Stanley Post Office	Australia	Record daily precipitation	45.2 mm (1.8 in)	63 of 100 (Major)
Cape Grim (Woolnorth)	Australia	Record daily precipitation	71.1 mm (2.8 in)	62 of 100 (Major)
Bellerive (Fort Street)	Australia	Record daily precipitation	72.6 mm (2.9 in)	61 of 100 (Major)
Walwa	Australia	Record daily precipitation	47.0 mm (1.9 in)	60 of 100 (Major)
Oksoey Fyr	Norway	Record daily precipitation	48.1 mm (1.9 in)	58 of 100 (Notable)
Mangalore (Mangalore Farm)	Australia	Record daily precipitation	38.1 mm (1.5 in)	57 of 100 (Notable)
Oberon (Jenolan Caves)	Australia	Record daily precipitation	50.8 mm (2.0 in)	56 of 100 (Notable)
Holbrook (Annandayle)	Australia	Record daily precipitation	57.2 mm (2.3 in)	56 of 100 (Notable)
Interlaken	Australia	Record daily precipitation	45.7 mm (1.8 in)	56 of 100 (Notable)
Yambacoona	Australia	Record daily precipitation	42.2 mm (1.7 in)	56 of 100 (Notable)
Kingston	Australia	Record daily precipitation	82.3 mm (3.2 in)	55 of 100 (Notable)
Opossum Bay	Australia	Record daily precipitation	54.1 mm (2.1 in)	54 of 100 (Notable)
Valemount	Canada	Record daily snowfall	15.2 cm (6.0 in)	54 of 100 (Notable)
Melton Mowbray (Lovely Banks)	Australia	Record daily precipitation	40.1 mm (1.6 in)	51 of 100 (Notable)
Warroo (Geeron)	Australia	Record daily precipitation	42.4 mm (1.7 in)	50 of 100 (Notable)
Wattle Flat General Store	Australia	Record daily precipitation	42.4 mm (1.7 in)	50 of 100 (Notable)
Geeveston Police Station	Australia	Record daily precipitation	47.8 mm (1.9 in)	50 of 100 (Notable)
Woomargama Estate	Australia	Record daily precipitation	46.2 mm (1.8 in)	48 of 100 (Notable)
Pulletop (Matta Mia)	Australia	Record daily precipitation	46.0 mm (1.8 in)	48 of 100 (Notable)
Portarlington	Australia	Record daily precipitation	31.0 mm (1.2 in)	48 of 100 (Notable)
Lenah Valley (Augusta Road)	Australia	Record daily precipitation	58.7 mm (2.3 in)	48 of 100 (Notable)
Ouse (Millbrook)	Australia	Record daily precipitation	42.4 mm (1.7 in)	48 of 100 (Notable)
Cap Chat	Canada	Record daily precipitation	50.3 mm (2.0 in)	48 of 100 (Notable)
Valangiman	India	Record daily precipitation	147.4 mm (5.8 in)	48 of 100 (Notable)
Sunny Corner (Snow Line)	Australia	Record daily precipitation	44.7 mm (1.8 in)	47 of 100 (Notable)
Smithton (Grant Street)	Australia	Record daily precipitation	43.7 mm (1.7 in)	47 of 100 (Notable)
Orford South	Australia	Record daily precipitation	50.0 mm (2.0 in)	47 of 100 (Notable)
Hobart (Ellerslie Road)	Australia	Record daily precipitation	53.6 mm (2.1 in)	47 of 100 (Notable)
Woodbridge	Australia	Record daily precipitation	44.5 mm (1.8 in)	47 of 100 (Notable)
Edith Creek	Australia	Record daily precipitation	41.1 mm (1.6 in)	46 of 100 (Notable)
Apsley (Parki)	Australia	Record daily precipitation	41.9 mm (1.6 in)	46 of 100 (Notable)
Mayuram	India	Record daily precipitation	176.1 mm (6.9 in)	46 of 100 (Notable)
Southport	Australia	Record daily precipitation	46.2 mm (1.8 in)	45 of 100 (Notable)
Lymington (Fattys Lane)	Australia	Record daily precipitation	34.8 mm (1.4 in)	45 of 100 (Notable)
Tocumwal Airport	Australia	Record daily precipitation	35.8 mm (1.4 in)	44 of 100 (Notable)
Branxholme (Bassett)	Australia	Record daily precipitation	35.8 mm (1.4 in)	44 of 100 (Notable)
Bothwell (Franklin Street)	Australia	Record daily precipitation	34.8 mm (1.4 in)	43 of 100 (Notable)
Srimushnam	India	Record daily precipitation	103.2 mm (4.1 in)	43 of 100 (Notable)
Madison	United States	Record daily precipitation	62.5 mm (2.5 in)	43 of 100 (Notable)
The Rock Post Office	Australia	Record daily precipitation	48.5 mm (1.9 in)	42 of 100 (Notable)
Lara Lake	Australia	Record daily precipitation	29.0 mm (1.1 in)	42 of 100 (Notable)
Cape Sorell	Australia	Record daily precipitation	36.3 mm (1.4 in)	42 of 100 (Notable)
Woori Yallock	Australia	Record daily precipitation	34.3 mm (1.4 in)	41 of 100 (Notable)
Melton	Australia	Record daily precipitation	35.6 mm (1.4 in)	41 of 100 (Notable)
Sharpes Siding	Australia	Record daily precipitation	44.7 mm (1.8 in)	41 of 100 (Notable)
Zeehan Post Office	Australia	Record daily precipitation	62.7 mm (2.5 in)	41 of 100 (Notable)
Kattumannarkoil	India	Record daily precipitation	105.0 mm (4.1 in)	41 of 100 (Notable)
Presque Isle	United States	Record daily precipitation	48.8 mm (1.9 in)	41 of 100 (Notable)
Bellows Falls	United States	Record daily precipitation	51.3 mm (2.0 in)	41 of 100 (Notable)
Werribee Research Farm	Australia	Record daily precipitation	32.5 mm (1.3 in)	40 of 100 (Notable)
City of Melbourne Bay	Australia	Record daily precipitation	55.1 mm (2.2 in)	40 of 100 (Notable)
Bathurst Gaol	Australia	Record daily precipitation	26.7 mm (1.1 in)	39 of 100 (Notable)
Holbrook (Glenfalloch)	Australia	Record daily precipitation	42.4 mm (1.7 in)	39 of 100 (Notable)
Tallangatta Dcnr	Australia	Record daily precipitation	56.9 mm (2.2 in)	39 of 100 (Notable)
Banff	Canada	Record daily snowfall	14.0 cm (5.5 in)	39 of 100 (Notable)
Baddeck	Canada	Record daily precipitation	91.4 mm (3.6 in)	39 of 100 (Notable)
Cuddalore	India	Record daily precipitation	134.9 mm (5.3 in)	39 of 100 (Notable)
Grafton	United States	Record daily precipitation	51.3 mm (2.0 in)	39 of 100 (Notable)
Holbrook (Rsl)	Australia	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Yan Yean	Australia	Record daily precipitation	26.4 mm (1.0 in)	38 of 100 (Notable)

Counts by Type and Timescale

857 records

Records set or tied on 20 October 1966 by type: Highest daily maximum 14, Lowest daily maximum 159, Highest daily minimum 57, Lowest daily minimum 116, Heaviest daily rainfall 489, Heaviest daily snowfall 15, Deepest snow cover 7.

Records on 20 October 1966 by type
Record type	Records
Highest daily maximum	14
Lowest daily maximum	159
Highest daily minimum	57
Lowest daily minimum	116
Heaviest daily rainfall	489
Heaviest daily snowfall	15
Deepest snow cover	7

Records on 20 October 1966 by timescale: all-time 0, monthly 34, daily 823.

How Much Records Were Beaten By

741 broken records

Margins by which the 741 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 150.0. Ties are not counted.

Top 20 by Significance

20 October 1966

Top 20 records on 20 October 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 October 1966	Stanley Post Office, AU	daily rain	45.2 mm (1.8 in)	29.7 mm (1.2 in)	48 years	63 of 100 (Major)
20 October 1966	Cape Grim (Woolnorth), AU	monthly rain	71.1 mm (2.8 in)	30.5 mm (1.2 in)	16 years	62 of 100 (Major)
20 October 1966	Bellerive (Fort Street), AU	monthly rain	72.6 mm (2.9 in)	28.7 mm (1.1 in)	15 years	61 of 100 (Major)
20 October 1966	Walwa, AU	daily rain	47.0 mm (1.9 in)	27.7 mm (1.1 in)	79 years	60 of 100 (Major)
20 October 1966	Oksoey Fyr, NO	daily rain	48.1 mm (1.9 in)	21.6 mm (0.9 in)	83 years	58 of 100 (Notable)
20 October 1966	Mangalore (Mangalore Farm), AU	daily rain	38.1 mm (1.5 in)	28.4 mm (1.1 in)	37 years	57 of 100 (Notable)
20 October 1966	Oberon (Jenolan Caves), AU	daily rain	50.8 mm (2.0 in)	31.5 mm (1.2 in)	61 years	56 of 100 (Notable)
20 October 1966	Holbrook (Annandayle), AU	daily rain	57.2 mm (2.3 in)	30.5 mm (1.2 in)	61 years	56 of 100 (Notable)
20 October 1966	Interlaken, AU	monthly rain	45.7 mm (1.8 in)	15.2 mm (0.6 in)	43 years	56 of 100 (Notable)
20 October 1966	Yambacoona, AU	daily rain	42.2 mm (1.7 in)	23.7 mm (0.9 in)	33 years	56 of 100 (Notable)
20 October 1966	Kingston, AU	monthly rain	82.3 mm (3.2 in)	25.7 mm (1.0 in)	15 years	55 of 100 (Notable)
20 October 1966	Opossum Bay, AU	daily rain	54.1 mm (2.1 in)	27.2 mm (1.1 in)	33 years	54 of 100 (Notable)
20 October 1966	Valemount, CA	daily snowfall	15.2 cm (6.0 in)	14.7 cm (5.8 in)	32 years	54 of 100 (Notable)
20 October 1966	Melton Mowbray (Lovely Banks), AU	daily rain	40.1 mm (1.6 in)	24.9 mm (1.0 in)	17 years	51 of 100 (Notable)
20 October 1966	Warroo (Geeron), AU	daily rain	42.4 mm (1.7 in)	24.6 mm (1.0 in)	61 years	50 of 100 (Notable)
20 October 1966	Wattle Flat General Store, AU	daily rain	42.4 mm (1.7 in)	26.1 mm (1.0 in)	61 years	50 of 100 (Notable)
20 October 1966	Geeveston Police Station, AU	daily rain	47.8 mm (1.9 in)	27.7 mm (1.1 in)	24 years	50 of 100 (Notable)
20 October 1966	Woomargama Estate, AU	daily rain	46.2 mm (1.8 in)	21.3 mm (0.8 in)	61 years	48 of 100 (Notable)
20 October 1966	Pulletop (Matta Mia), AU	daily rain	46.0 mm (1.8 in)	19.6 mm (0.8 in)	61 years	48 of 100 (Notable)
20 October 1966	Portarlington, AU	daily rain	31.0 mm (1.2 in)	14.5 mm (0.6 in)	57 years	48 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 1966

Records set or tied on this calendar date in each year from 1806 to 1966. 1966 had 857 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 1966-10-20: 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	650
20 to 40	71
40 to 60	10
60 to 80	5
80 to 100	0
100 to 120	2
120 to 140	1
140 to 160	2