Weather Records on 12 August 1966

777 weather records were set or tied worldwide on 12 August 1966. Highest significance: N Loup, US.

Key Facts for 12 August 1966

On 12 August 1966, 777 weather records were set or tied at long-record stations worldwide.
75 were record highs and 290 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 29 monthly and 743 daily.
N Loup set an all-time record daily precipitation of 212.1 mm (8.4 in) on 12 August 1966.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 445 records.

Record Map

777 stations

777 station records on 12 August 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 August 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
N Loup	United States	Record daily precipitation	212.1 mm (8.4 in)	88 of 100 (Exceptional)
Ericson 8 WNW	United States	Record daily precipitation	147.3 mm (5.8 in)	80 of 100 (Exceptional)
Greeley	United States	Record daily precipitation	190.8 mm (7.5 in)	73 of 100 (Major)
Hewitt	United States	Record daily precipitation	100.3 mm (3.9 in)	65 of 100 (Major)
Beech Forest	Australia	Record daily precipitation	86.6 mm (3.4 in)	63 of 100 (Major)
Crockett	United States	Record daily precipitation	73.9 mm (2.9 in)	63 of 100 (Major)
Gatesville	United States	Record daily precipitation	108.0 mm (4.3 in)	63 of 100 (Major)
Woolsthorpe	Australia	Record daily precipitation	38.4 mm (1.5 in)	62 of 100 (Major)
Huntsville	United States	Record daily precipitation	80.0 mm (3.1 in)	60 of 100 (Major)
McGregor	United States	Record daily precipitation	93.5 mm (3.7 in)	60 of 100 (Major)
Camperdown (Post Office)	Australia	Record daily precipitation	45.2 mm (1.8 in)	59 of 100 (Notable)
Lufkin Angelina Co AP	United States	Record daily precipitation	84.1 mm (3.3 in)	59 of 100 (Notable)
Beeac (Post Office)	Australia	Record daily precipitation	35.3 mm (1.4 in)	58 of 100 (Notable)
Cobden (Post Office)	Australia	Record daily precipitation	53.8 mm (2.1 in)	58 of 100 (Notable)
Koroit	Australia	Record daily precipitation	34.3 mm (1.4 in)	58 of 100 (Notable)
Warrion	Australia	Record daily precipitation	33.3 mm (1.3 in)	58 of 100 (Notable)
Chapple Vale	Australia	Record daily precipitation	51.8 mm (2.0 in)	58 of 100 (Notable)
Darlington (Ware Street)	Australia	Record daily precipitation	37.8 mm (1.5 in)	57 of 100 (Notable)
Ellerslie Post Office	Australia	Record daily precipitation	46.0 mm (1.8 in)	57 of 100 (Notable)
Evelyn Sharp Fld	United States	Record daily precipitation	147.8 mm (5.8 in)	57 of 100 (Notable)
Daylesford	Australia	Record daily precipitation	37.3 mm (1.5 in)	56 of 100 (Notable)
Colac (Shire Office)	Australia	Record daily precipitation	38.9 mm (1.5 in)	56 of 100 (Notable)
Henichesk	Ukraine	Record daily precipitation	56.7 mm (2.2 in)	56 of 100 (Notable)
Port Campbell Post Office	Australia	Record daily precipitation	34.3 mm (1.4 in)	55 of 100 (Notable)
Warrnambool Shire Office	Australia	Record daily precipitation	35.1 mm (1.4 in)	55 of 100 (Notable)
Jefferson City Evap	United States	Record daily precipitation	62.5 mm (2.5 in)	54 of 100 (Notable)
Kallista Forestry	Australia	Record daily precipitation	52.1 mm (2.1 in)	53 of 100 (Notable)
Terang	Australia	Record daily precipitation	47.5 mm (1.9 in)	53 of 100 (Notable)
Radford 5 SW	United States	Record daily precipitation	43.2 mm (1.7 in)	53 of 100 (Notable)
Nullawarre	Australia	Record daily precipitation	39.1 mm (1.5 in)	52 of 100 (Notable)
Bryn Euryn	Australia	Record daily precipitation	81.3 mm (3.2 in)	51 of 100 (Notable)
Klepinino	Ukraine	Record daily precipitation	51.3 mm (2.0 in)	51 of 100 (Notable)
Atkinson 3SW	United States	Record daily precipitation	100.3 mm (3.9 in)	51 of 100 (Notable)
Lampasas	United States	Record daily precipitation	80.8 mm (3.2 in)	51 of 100 (Notable)
Seward AP	United States	Record high maximum temperature	35.0 C (95.0 F)	51 of 100 (Notable)
Miami	United States	Record daily precipitation	41.1 mm (1.6 in)	50 of 100 (Notable)
Edmonton 3 W	United States	Record daily precipitation	59.7 mm (2.4 in)	50 of 100 (Notable)
Mortlake	Australia	Record daily precipitation	33.5 mm (1.3 in)	49 of 100 (Notable)
Daniel de Queiroz (Muxiopo)	Brazil	Record daily precipitation	31.0 mm (1.2 in)	49 of 100 (Notable)
Oelrichs	United States	Record daily precipitation	37.6 mm (1.5 in)	49 of 100 (Notable)
Redig 11 NE	United States	Record daily precipitation	53.3 mm (2.1 in)	49 of 100 (Notable)
Warburton	Australia	Record daily precipitation	45.5 mm (1.8 in)	48 of 100 (Notable)
Apollo Bay	Australia	Record daily precipitation	52.1 mm (2.1 in)	48 of 100 (Notable)
Caramut (Barwidgee)	Australia	Record daily precipitation	33.0 mm (1.3 in)	48 of 100 (Notable)
Nenzel 20 S	United States	Record daily precipitation	80.5 mm (3.2 in)	48 of 100 (Notable)
O'Neill	United States	Record daily precipitation	110.5 mm (4.4 in)	48 of 100 (Notable)
Vivian	United States	Record daily precipitation	47.0 mm (1.9 in)	48 of 100 (Notable)
Peterborough	Australia	Record daily precipitation	32.5 mm (1.3 in)	47 of 100 (Notable)
Dom Mauricio	Brazil	Record daily precipitation	46.2 mm (1.8 in)	47 of 100 (Notable)
Bison	United States	Record daily precipitation	76.2 mm (3.0 in)	47 of 100 (Notable)
Riverside	United States	Record daily precipitation	91.2 mm (3.6 in)	47 of 100 (Notable)
Timber Lake	United States	Record daily precipitation	45.0 mm (1.8 in)	46 of 100 (Notable)
Dialville 2 W	United States	Record daily precipitation	121.4 mm (4.8 in)	46 of 100 (Notable)
Silvan	Australia	Record daily precipitation	51.8 mm (2.0 in)	45 of 100 (Notable)
Barramunga	Australia	Record daily precipitation	52.3 mm (2.1 in)	45 of 100 (Notable)
Ioco Refinery	Canada	Record daily precipitation	85.1 mm (3.4 in)	45 of 100 (Notable)
Ashley	United States	Record daily precipitation	55.4 mm (2.2 in)	45 of 100 (Notable)
Goldthwaite 1 WSW	United States	Record daily precipitation	74.7 mm (2.9 in)	45 of 100 (Notable)
Wilsons Reservoir	Australia	Record daily precipitation	36.8 mm (1.4 in)	44 of 100 (Notable)
Johanna Glen	Australia	Record daily precipitation	37.1 mm (1.5 in)	44 of 100 (Notable)

Counts by Type and Timescale

777 records

Records set or tied on 12 August 1966 by type: Highest daily maximum 29, Lowest daily maximum 161, Highest daily minimum 46, Lowest daily minimum 129, Heaviest daily rainfall 412.

Records on 12 August 1966 by type
Record type	Records
Highest daily maximum	29
Lowest daily maximum	161
Highest daily minimum	46
Lowest daily minimum	129
Heaviest daily rainfall	412
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 August 1966 by timescale: all-time 5, monthly 29, daily 743.

How Much Records Were Beaten By

637 broken records

Margins by which the 637 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 115.9. Ties are not counted.

Top 20 by Significance

12 August 1966

Top 20 records on 12 August 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 August 1966	N Loup, US	all-time rain	212.1 mm (8.4 in)	60.5 mm (2.4 in)	70 years	88 of 100 (Exceptional)
12 August 1966	Ericson 8 WNW, US	all-time rain	147.3 mm (5.8 in)	58.4 mm (2.3 in)	46 years	80 of 100 (Exceptional)
12 August 1966	Greeley, US	monthly rain	190.8 mm (7.5 in)	115.9 mm (4.6 in)	55 years	73 of 100 (Major)
12 August 1966	Hewitt, US	daily rain	100.3 mm (3.9 in)	88.6 mm (3.5 in)	56 years	65 of 100 (Major)
12 August 1966	Beech Forest, AU	daily rain	86.6 mm (3.4 in)	57.4 mm (2.3 in)	51 years	63 of 100 (Major)
12 August 1966	Crockett, US	daily rain	73.9 mm (2.9 in)	62.5 mm (2.5 in)	60 years	63 of 100 (Major)
12 August 1966	Gatesville, US	daily rain	108.0 mm (4.3 in)	92.8 mm (3.7 in)	56 years	63 of 100 (Major)
12 August 1966	Woolsthorpe, AU	daily rain	38.4 mm (1.5 in)	18.1 mm (0.7 in)	51 years	62 of 100 (Major)
12 August 1966	Huntsville, US	daily rain	80.0 mm (3.1 in)	63.5 mm (2.5 in)	47 years	60 of 100 (Major)
12 August 1966	McGregor, US	daily rain	93.5 mm (3.7 in)	77.0 mm (3.0 in)	45 years	60 of 100 (Major)
12 August 1966	Camperdown (Post Office), AU	daily rain	45.2 mm (1.8 in)	27.4 mm (1.1 in)	44 years	59 of 100 (Notable)
12 August 1966	Lufkin Angelina Co AP, US	daily rain	84.1 mm (3.3 in)	71.4 mm (2.8 in)	45 years	59 of 100 (Notable)
12 August 1966	Beeac (Post Office), AU	daily rain	35.3 mm (1.4 in)	18.0 mm (0.7 in)	51 years	58 of 100 (Notable)
12 August 1966	Cobden (Post Office), AU	monthly rain	53.8 mm (2.1 in)	17.7 mm (0.7 in)	31 years	58 of 100 (Notable)
12 August 1966	Koroit, AU	daily rain	34.3 mm (1.4 in)	17.3 mm (0.7 in)	51 years	58 of 100 (Notable)
12 August 1966	Warrion, AU	daily rain	33.3 mm (1.3 in)	16.5 mm (0.6 in)	51 years	58 of 100 (Notable)
12 August 1966	Chapple Vale, AU	daily rain	51.8 mm (2.0 in)	30.2 mm (1.2 in)	45 years	58 of 100 (Notable)
12 August 1966	Darlington (Ware Street), AU	monthly rain	37.8 mm (1.5 in)	13.7 mm (0.5 in)	14 years	57 of 100 (Notable)
12 August 1966	Ellerslie Post Office, AU	monthly rain	46.0 mm (1.8 in)	15.5 mm (0.6 in)	32 years	57 of 100 (Notable)
12 August 1966	Evelyn Sharp Fld, US	all-time rain	147.8 mm (5.8 in)	14.2 mm (0.6 in)	66 years	57 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

1793 to 1966

Records set or tied on this calendar date in each year from 1793 to 1966. 1966 had 777 records.

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

Records on 08-12 in each year
Year	Records
1793	1
1796	1
1811	2
1814	1
1815	1
1825	1
1843	1
1851	1
1854	1
1855	2
1856	1
1861	1
1864	3
1865	1
1867	1
1868	1
1871	2
1872	1
1873	1
1874	2
1875	3
1876	2
1879	1
1881	2
1883	1
1884	1
1885	1
1887	2
1888	2
1889	4
1890	4
1891	4
1892	2
1893	1
1894	1
1895	6
1896	2
1897	4
1898	1
1899	10
1900	1
1901	5
1902	9
1903	14
1904	13
1905	16
1906	8
1907	8
1908	31
1909	42
1910	16
1911	33
1912	40
1913	39
1914	26
1915	46
1916	31
1917	134
1918	37
1919	42
1920	26
1921	174
1922	71
1923	89
1924	267
1925	150
1926	154
1927	145
1928	173
1929	276
1930	501
1931	708
1932	418
1933	271
1934	471
1935	408
1936	591
1937	356
1938	237
1939	282
1940	545
1941	481
1942	257
1943	523
1944	595
1945	295
1946	655
1947	729
1948	384
1949	469
1950	442
1951	357
1952	533
1953	227
1954	969
1955	590
1956	265
1957	384
1958	406
1959	388
1960	707
1961	381
1962	466
1963	559
1964	1,346
1965	977
1966	777
1967	1,135
1968	444
1969	629
1970	422
1971	486
1972	473
1973	442
1974	560
1975	593
1976	495
1977	747
1978	571
1979	1,192
1980	692
1981	665
1982	789
1983	923
1984	665
1985	935
1986	615
1987	935
1988	1,518
1989	827
1990	727
1991	726
1992	1,134
1993	936
1994	861
1995	1,654
1996	1,336
1997	1,363
1998	1,215
1999	1,325
2000	741
2001	855
2002	1,345
2003	1,752
2004	1,872
2005	1,085
2006	874
2007	1,209
2008	970
2009	814
2010	1,907
2011	903
2012	910
2013	427
2014	787
2015	757
2016	1,290
2017	533
2018	571
2019	695
2020	730
2021	980
2022	616
2023	779
2024	659
2025	639
2026	849

Download the Data

Data for records on 1966-08-12: 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	558
20 to 40	55
40 to 60	14
60 to 80	6
80 to 100	3
100 to 120	1