Weather Records on 20 August 1966

1,094 weather records were set or tied worldwide on 20 August 1966. Highest significance: Plauen, DE.

Key Facts for 20 August 1966

On 20 August 1966, 1,094 weather records were set or tied at long-record stations worldwide.
73 were record highs and 292 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 77 monthly and 1,016 daily.
Plauen set a daily record precipitation of 53.1 mm (2.1 in) on 20 August 1966.
Across 163 earlier years (1797 to 2026) the same calendar date averaged 451 records.

Record Map

1,094 stations

1,094 station records on 20 August 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 August 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Plauen	Germany	Record daily precipitation	53.1 mm (2.1 in)	72 of 100 (Major)
Chamberlain	United States	Record daily precipitation	63.0 mm (2.5 in)	67 of 100 (Major)
Cooyar Post Office	Australia	Record daily precipitation	54.4 mm (2.1 in)	62 of 100 (Major)
Mt Stanley Forestry	Australia	Record daily precipitation	42.4 mm (1.7 in)	62 of 100 (Major)
Harlem	United States	Record daily precipitation	62.2 mm (2.4 in)	62 of 100 (Major)
Crohamhurst	Australia	Record daily precipitation	62.2 mm (2.4 in)	61 of 100 (Major)
Enoggera Reservoir	Australia	Record daily precipitation	53.3 mm (2.1 in)	61 of 100 (Major)
Redfield	United States	Record daily precipitation	73.4 mm (2.9 in)	61 of 100 (Major)
Burpengary Ulmann Rd	Australia	Record daily precipitation	56.9 mm (2.2 in)	60 of 100 (Major)
Nanango Wills St	Australia	Record daily precipitation	52.8 mm (2.1 in)	60 of 100 (Major)
Gold Creek Reservoir	Australia	Record daily precipitation	57.2 mm (2.3 in)	60 of 100 (Major)
Alderley	Australia	Record daily precipitation	49.3 mm (1.9 in)	59 of 100 (Notable)
Green Mountains	Australia	Record daily precipitation	88.9 mm (3.5 in)	57 of 100 (Notable)
Taabinga	Australia	Record daily precipitation	72.4 mm (2.9 in)	57 of 100 (Notable)
Beaudesert Cryna	Australia	Record daily precipitation	53.6 mm (2.1 in)	56 of 100 (Notable)
Tumkur	India	Record daily precipitation	96.5 mm (3.8 in)	56 of 100 (Notable)
Manly Railway Station	Australia	Record daily precipitation	53.3 mm (2.1 in)	55 of 100 (Notable)
Samford Csiro	Australia	Record daily precipitation	50.3 mm (2.0 in)	55 of 100 (Notable)
Goliad	United States	Record daily precipitation	109.7 mm (4.3 in)	55 of 100 (Notable)
Bald Hills Post Office	Australia	Record daily precipitation	47.2 mm (1.9 in)	54 of 100 (Notable)
Murarrie Road Csiro	Australia	Record daily precipitation	47.2 mm (1.9 in)	54 of 100 (Notable)
Zillmere Post Office	Australia	Record daily precipitation	51.6 mm (2.0 in)	54 of 100 (Notable)
Gilston State School	Australia	Record daily precipitation	77.5 mm (3.1 in)	54 of 100 (Notable)
Gayndah Post Office	Australia	Record daily precipitation	45.0 mm (1.8 in)	53 of 100 (Notable)
Artern	Germany	Record daily precipitation	40.6 mm (1.6 in)	53 of 100 (Notable)
Wheaton	United States	Record daily precipitation	51.6 mm (2.0 in)	53 of 100 (Notable)
Canungra Finch Road	Australia	Record daily precipitation	52.6 mm (2.1 in)	52 of 100 (Notable)
Mt Tamborine Fern St	Australia	Record daily precipitation	71.1 mm (2.8 in)	52 of 100 (Notable)
Crows Nest	Australia	Record daily precipitation	37.6 mm (1.5 in)	52 of 100 (Notable)
Warthausen-Birkenhard	Germany	Record daily precipitation	41.4 mm (1.6 in)	52 of 100 (Notable)
Tapoco	United States	Record daily precipitation	102.9 mm (4.1 in)	52 of 100 (Notable)
Rannes Railway Station	Australia	Record daily precipitation	41.9 mm (1.6 in)	51 of 100 (Notable)
Englesberg Village	Australia	Record daily precipitation	47.8 mm (1.9 in)	51 of 100 (Notable)
Toogoolawah Post Office	Australia	Record daily precipitation	49.8 mm (2.0 in)	51 of 100 (Notable)
Woodford Post Office	Australia	Record daily precipitation	45.7 mm (1.8 in)	51 of 100 (Notable)
Yarraman Post Office	Australia	Record daily precipitation	66.5 mm (2.6 in)	51 of 100 (Notable)
Dalveen	Australia	Record daily precipitation	49.5 mm (1.9 in)	51 of 100 (Notable)
Willow Creek	Canada	Record daily precipitation	50.3 mm (2.0 in)	51 of 100 (Notable)
Faulkton	United States	Record daily precipitation	53.8 mm (2.1 in)	51 of 100 (Notable)
Warrinilla	Australia	Record daily precipitation	37.3 mm (1.5 in)	50 of 100 (Notable)
Harrisville Post Office	Australia	Record daily precipitation	46.5 mm (1.8 in)	50 of 100 (Notable)
Ipswich	Australia	Record daily precipitation	51.8 mm (2.0 in)	50 of 100 (Notable)
Monsildale	Australia	Record daily precipitation	44.5 mm (1.8 in)	50 of 100 (Notable)
Moogerah Dam	Australia	Record daily precipitation	47.8 mm (1.9 in)	50 of 100 (Notable)
Nerang Gilston Rd	Australia	Record daily precipitation	86.9 mm (3.4 in)	50 of 100 (Notable)
Geham State School	Australia	Record daily precipitation	58.9 mm (2.3 in)	50 of 100 (Notable)
Jondaryan Post Office	Australia	Record daily precipitation	44.7 mm (1.8 in)	50 of 100 (Notable)
Stanthorpe Leslie Parade	Australia	Record daily precipitation	46.5 mm (1.8 in)	50 of 100 (Notable)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	67.0 mm (2.6 in)	50 of 100 (Notable)
Ashton	United States	Record daily precipitation	84.3 mm (3.3 in)	50 of 100 (Notable)
Fernlees Post Office	Australia	Record daily precipitation	44.5 mm (1.8 in)	49 of 100 (Notable)
Pine Hill Railway Station	Australia	Record daily precipitation	36.8 mm (1.4 in)	49 of 100 (Notable)
Amamoor Forestry	Australia	Record daily precipitation	47.2 mm (1.9 in)	49 of 100 (Notable)
Maleny Denning Rd	Australia	Record daily precipitation	67.3 mm (2.6 in)	49 of 100 (Notable)
Mount Lindsay	Australia	Record daily precipitation	59.7 mm (2.4 in)	49 of 100 (Notable)
Rumbulara Vineyards	Australia	Record daily precipitation	57.2 mm (2.3 in)	49 of 100 (Notable)
Texas Post Office	Australia	Record daily precipitation	40.4 mm (1.6 in)	49 of 100 (Notable)
Maryland	Australia	Record daily precipitation	63.8 mm (2.5 in)	49 of 100 (Notable)
Caboolture Post Office	Australia	Record daily precipitation	48.0 mm (1.9 in)	48 of 100 (Notable)
Coalstoun Lakes	Australia	Record daily precipitation	42.4 mm (1.7 in)	48 of 100 (Notable)

Counts by Type and Timescale

1,094 records

Records set or tied on 20 August 1966 by type: Highest daily maximum 16, Lowest daily maximum 265, Highest daily minimum 57, Lowest daily minimum 27, Heaviest daily rainfall 729.

Records on 20 August 1966 by type
Record type	Records
Highest daily maximum	16
Lowest daily maximum	265
Highest daily minimum	57
Lowest daily minimum	27
Heaviest daily rainfall	729
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 August 1966 by timescale: all-time 1, monthly 77, daily 1,016.

How Much Records Were Beaten By

990 broken records

Margins by which the 990 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 109.1. Ties are not counted.

Top 20 by Significance

20 August 1966

Top 20 records on 20 August 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 1966	Plauen, DE	daily rain	53.1 mm (2.1 in)	29.7 mm (1.2 in)	81 years	72 of 100 (Major)
20 August 1966	Chamberlain, US	daily rain	63.0 mm (2.5 in)	53.9 mm (2.1 in)	69 years	67 of 100 (Major)
20 August 1966	Cooyar Post Office, AU	daily rain	54.4 mm (2.1 in)	34.6 mm (1.4 in)	68 years	62 of 100 (Major)
20 August 1966	Mt Stanley Forestry, AU	daily rain	42.4 mm (1.7 in)	30.5 mm (1.2 in)	64 years	62 of 100 (Major)
20 August 1966	Harlem, US	monthly rain	62.2 mm (2.4 in)	21.8 mm (0.9 in)	32 years	62 of 100 (Major)
20 August 1966	Crohamhurst, AU	daily rain	62.2 mm (2.4 in)	42.4 mm (1.7 in)	49 years	61 of 100 (Major)
20 August 1966	Enoggera Reservoir, AU	daily rain	53.3 mm (2.1 in)	40.1 mm (1.6 in)	49 years	61 of 100 (Major)
20 August 1966	Redfield, US	daily rain	73.4 mm (2.9 in)	51.8 mm (2.0 in)	49 years	61 of 100 (Major)
20 August 1966	Burpengary Ulmann Rd, AU	daily rain	56.9 mm (2.2 in)	45.0 mm (1.8 in)	64 years	60 of 100 (Major)
20 August 1966	Nanango Wills St, AU	daily rain	52.8 mm (2.1 in)	36.8 mm (1.4 in)	41 years	60 of 100 (Major)
20 August 1966	Gold Creek Reservoir, AU	daily rain	57.2 mm (2.3 in)	43.7 mm (1.7 in)	49 years	60 of 100 (Major)
20 August 1966	Alderley, AU	daily rain	49.3 mm (1.9 in)	36.1 mm (1.4 in)	64 years	59 of 100 (Notable)
20 August 1966	Green Mountains, AU	daily rain	88.9 mm (3.5 in)	60.2 mm (2.4 in)	43 years	57 of 100 (Notable)
20 August 1966	Taabinga, AU	monthly rain	72.4 mm (2.9 in)	34.6 mm (1.4 in)	12 years	57 of 100 (Notable)
20 August 1966	Beaudesert Cryna, AU	daily rain	53.6 mm (2.1 in)	37.1 mm (1.5 in)	49 years	56 of 100 (Notable)
20 August 1966	Tumkur, IN	daily rain	96.5 mm (3.8 in)	52.6 mm (2.1 in)	33 years	56 of 100 (Notable)
20 August 1966	Manly Railway Station, AU	daily rain	53.3 mm (2.1 in)	34.2 mm (1.3 in)	64 years	55 of 100 (Notable)
20 August 1966	Samford Csiro, AU	daily rain	50.3 mm (2.0 in)	38.6 mm (1.5 in)	49 years	55 of 100 (Notable)
20 August 1966	Goliad, US	daily rain	109.7 mm (4.3 in)	83.3 mm (3.3 in)	35 years	55 of 100 (Notable)
20 August 1966	Bald Hills Post Office, AU	daily rain	47.2 mm (1.9 in)	28.1 mm (1.1 in)	64 years	54 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

1797 to 1966

Records set or tied on this calendar date in each year from 1797 to 1966. 1966 had 1,094 records.

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

Records on 08-20 in each year
Year	Records
1797	1
1807	1
1809	2
1816	1
1830	1
1832	1
1838	1
1840	1
1842	1
1846	1
1849	1
1850	1
1852	1
1858	3
1863	5
1867	4
1870	3
1871	1
1873	1
1875	2
1877	1
1883	2
1884	2
1885	6
1886	1
1888	1
1889	2
1890	2
1891	2
1892	6
1893	1
1894	1
1895	1
1896	5
1897	6
1898	1
1899	5
1900	7
1901	12
1902	3
1903	7
1904	30
1905	7
1906	26
1907	15
1908	21
1909	69
1910	7
1911	18
1912	25
1913	23
1914	15
1915	14
1916	74
1917	51
1918	69
1919	25
1920	47
1921	23
1922	52
1923	83
1924	132
1925	193
1926	187
1927	338
1928	101
1929	213
1930	318
1931	214
1932	299
1933	324
1934	376
1935	339
1936	543
1937	537
1938	250
1939	448
1940	695
1941	230
1942	429
1943	436
1944	355
1945	398
1946	349
1947	988
1948	403
1949	431
1950	1,341
1951	824
1952	425
1953	441
1954	476
1955	848
1956	678
1957	342
1958	281
1959	764
1960	465
1961	520
1962	684
1963	577
1964	629
1965	470
1966	1,094
1967	657
1968	862
1969	608
1970	414
1971	585
1972	522
1973	490
1974	565
1975	411
1976	894
1977	860
1978	563
1979	1,009
1980	991
1981	856
1982	620
1983	1,465
1984	696
1985	666
1986	819
1987	564
1988	991
1989	603
1990	1,262
1991	804
1992	1,168
1993	759
1994	719
1995	1,113
1996	900
1997	1,214
1998	802
1999	810
2000	989
2001	909
2002	1,208
2003	1,031
2004	1,333
2005	1,112
2006	851
2007	1,955
2008	1,170
2009	1,414
2010	1,028
2011	987
2012	1,086
2013	545
2014	582
2015	1,075
2016	872
2017	324
2018	657
2019	698
2020	1,051
2021	1,028
2022	1,038
2023	1,479
2024	589
2025	1,134
2026	985

Download the Data

Data for records on 1966-08-20: 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	787
20 to 40	176
40 to 60	20
60 to 80	5
80 to 100	1
100 to 120	1