Weather Records on 4 August 1966

552 weather records were set or tied worldwide on 4 August 1966. Highest significance: Oneonta, US.

Key Facts for 4 August 1966

On 4 August 1966, 552 weather records were set or tied at long-record stations worldwide.
83 were record highs and 259 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 12 monthly and 537 daily.
Oneonta set a daily record precipitation of 127.0 mm (5.0 in) on 4 August 1966.
Across 165 earlier years (1815 to 2026) the same calendar date averaged 441 records.

Record Map

552 stations

552 station records on 4 August 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 August 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Oneonta	United States	Record daily precipitation	127.0 mm (5.0 in)	64 of 100 (Major)
Clemson UNIV	United States	Record daily precipitation	99.6 mm (3.9 in)	56 of 100 (Notable)
Kamennaja-Step	Russia	Record daily precipitation	41.1 mm (1.6 in)	53 of 100 (Notable)
Kumbhakonam	India	Record daily precipitation	77.0 mm (3.0 in)	51 of 100 (Notable)
Ikej	Russia	Record daily precipitation	50.9 mm (2.0 in)	49 of 100 (Notable)
Ashville 4 W	United States	Record daily precipitation	106.7 mm (4.2 in)	49 of 100 (Notable)
Queimadas	Brazil	Record daily precipitation	41.3 mm (1.6 in)	47 of 100 (Notable)
Srimushnam	India	Record daily precipitation	60.0 mm (2.4 in)	47 of 100 (Notable)
Clinton 2 S	United States	Record daily precipitation	152.7 mm (6.0 in)	45 of 100 (Notable)
Blackville 3 W	United States	Record daily precipitation	89.4 mm (3.5 in)	44 of 100 (Notable)
Mayuram	India	Record daily precipitation	65.0 mm (2.6 in)	43 of 100 (Notable)
Chettikulam	India	Record daily precipitation	84.0 mm (3.3 in)	43 of 100 (Notable)
Parnu	Estonia	Record daily precipitation	30.5 mm (1.2 in)	42 of 100 (Notable)
Manginapudi	India	Record daily precipitation	87.6 mm (3.4 in)	42 of 100 (Notable)
Oran-Hopital Militaire	Algeria	Record high maximum temperature	38.0 C (100.4 F)	41 of 100 (Notable)
Saint Bernard	United States	Record daily precipitation	64.0 mm (2.5 in)	41 of 100 (Notable)
Covington	United States	Record low maximum temperature	25.0 C (77.0 F)	41 of 100 (Notable)
Macklin	Canada	Record daily precipitation	40.1 mm (1.6 in)	39 of 100 (Notable)
Nandigama	India	Record daily precipitation	77.2 mm (3.0 in)	39 of 100 (Notable)
Chadron 3SW	United States	Record daily precipitation	28.4 mm (1.1 in)	39 of 100 (Notable)
Goat Rock	United States	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)
Waskada	Canada	Record daily precipitation	50.8 mm (2.0 in)	37 of 100 (Notable)
Virtsu	Estonia	Record daily precipitation	30.7 mm (1.2 in)	37 of 100 (Notable)
Macon 2 NE	United States	Record daily precipitation	52.1 mm (2.1 in)	37 of 100 (Notable)
Ingenio Tamazula	Mexico	Record daily precipitation	71.4 mm (2.8 in)	36 of 100 (Notable)
Wittstock-Rote Muhle	Germany	Record daily precipitation	30.4 mm (1.2 in)	35 of 100 (Notable)
Sirkali	India	Record daily precipitation	46.2 mm (1.8 in)	35 of 100 (Notable)
Biloxi	United States	Record low maximum temperature	27.2 C (81.0 F)	35 of 100 (Notable)
Kosciusko	United States	Record low maximum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Danville 2 SE	United States	Record daily precipitation	79.0 mm (3.1 in)	35 of 100 (Notable)
Didwana	India	Record daily precipitation	49.0 mm (1.9 in)	34 of 100 (Routine)
Steamboat Springs	United States	Record daily precipitation	26.9 mm (1.1 in)	34 of 100 (Routine)
Danevang 1 W	United States	Record high minimum temperature	26.7 C (80.1 F)	34 of 100 (Routine)
Hughenden	Canada	Record daily precipitation	28.4 mm (1.1 in)	33 of 100 (Routine)
Childersburg	United States	Record daily precipitation	83.1 mm (3.3 in)	33 of 100 (Routine)
Tallapoosa 2 N	United States	Record low maximum temperature	23.9 C (75.0 F)	33 of 100 (Routine)
Schriever	United States	Record low maximum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Erick	United States	Record low minimum temperature	13.3 C (55.9 F)	33 of 100 (Routine)
Dungen	Sweden	Record daily precipitation	32.3 mm (1.3 in)	32 of 100 (Routine)
Russellville	United States	Record low minimum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Portage Wwtp	United States	Record low minimum temperature	5.6 C (42.1 F)	32 of 100 (Routine)
Talladega	United States	Record daily precipitation	35.3 mm (1.4 in)	31 of 100 (Routine)
Simmesport	United States	Record daily precipitation	78.7 mm (3.1 in)	31 of 100 (Routine)
Port Gibson 1 NE	United States	Record low maximum temperature	27.8 C (82.0 F)	31 of 100 (Routine)
University	United States	Record low maximum temperature	26.1 C (79.0 F)	31 of 100 (Routine)
Bronson	United States	Record daily precipitation	45.7 mm (1.8 in)	31 of 100 (Routine)
Garland 1 NE	United States	Record low minimum temperature	7.2 C (45.0 F)	31 of 100 (Routine)
Kandukur	India	Record daily precipitation	43.2 mm (1.7 in)	30 of 100 (Routine)
Lunkaransar	India	Record daily precipitation	98.0 mm (3.9 in)	30 of 100 (Routine)
Hamar-Daban	Russia	Record daily precipitation	79.1 mm (3.1 in)	30 of 100 (Routine)
Auburn	United States	Record daily precipitation	88.1 mm (3.5 in)	30 of 100 (Routine)
Lake Providence	United States	Record low minimum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
New Iberia AP - Acadiana Rgnl	United States	Record low maximum temperature	28.9 C (84.0 F)	30 of 100 (Routine)
Nevada Wtp	United States	Record low minimum temperature	10.0 C (50.0 F)	30 of 100 (Routine)
Eagle Nest	United States	Record daily precipitation	61.5 mm (2.4 in)	30 of 100 (Routine)
Norwalk Wwtp	United States	Record low minimum temperature	6.1 C (43.0 F)	30 of 100 (Routine)
Binghamton Wb City	United States	Record low minimum temperature	7.2 C (45.0 F)	30 of 100 (Routine)
Narsipatnam	India	Record daily precipitation	53.6 mm (2.1 in)	29 of 100 (Routine)
Huatusco de Chicuellar	Mexico	Record high minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Cordova 2 ENE	United States	Record daily precipitation	57.9 mm (2.3 in)	29 of 100 (Routine)

Counts by Type and Timescale

552 records

Records set or tied on 4 August 1966 by type: Highest daily maximum 26, Lowest daily maximum 104, Highest daily minimum 57, Lowest daily minimum 155, Heaviest daily rainfall 210.

Records on 4 August 1966 by type
Record type	Records
Highest daily maximum	26
Lowest daily maximum	104
Highest daily minimum	57
Lowest daily minimum	155
Heaviest daily rainfall	210
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 August 1966 by timescale: all-time 3, monthly 12, daily 537.

How Much Records Were Beaten By

416 broken records

Margins by which the 416 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 88.9. Ties are not counted.

Top 20 by Significance

4 August 1966

Top 20 records on 4 August 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 August 1966	Oneonta, US	daily rain	127.0 mm (5.0 in)	88.9 mm (3.5 in)	56 years	64 of 100 (Major)
4 August 1966	Clemson UNIV, US	daily rain	99.6 mm (3.9 in)	54.9 mm (2.2 in)	60 years	56 of 100 (Notable)
4 August 1966	Kamennaja-Step, RU	daily rain	41.1 mm (1.6 in)	20.7 mm (0.8 in)	64 years	53 of 100 (Notable)
4 August 1966	Kumbhakonam, IN	daily rain	77.0 mm (3.0 in)	54.9 mm (2.2 in)	60 years	51 of 100 (Notable)
4 August 1966	Ikej, RU	daily rain	50.9 mm (2.0 in)	33.2 mm (1.3 in)	20 years	49 of 100 (Notable)
4 August 1966	Ashville 4 W, US	monthly rain	106.7 mm (4.2 in)	25.9 mm (1.0 in)	46 years	49 of 100 (Notable)
4 August 1966	Queimadas, BR	monthly rain	41.3 mm (1.6 in)	16.1 mm (0.6 in)	11 years	47 of 100 (Notable)
4 August 1966	Srimushnam, IN	daily rain	60.0 mm (2.4 in)	40.7 mm (1.6 in)	60 years	47 of 100 (Notable)
4 August 1966	Clinton 2 S, US	all-time rain	152.7 mm (6.0 in)	29.3 mm (1.2 in)	5 years	45 of 100 (Notable)
4 August 1966	Blackville 3 W, US	daily rain	89.4 mm (3.5 in)	48.8 mm (1.9 in)	17 years	44 of 100 (Notable)
4 August 1966	Mayuram, IN	daily rain	65.0 mm (2.6 in)	59.4 mm (2.3 in)	8 years	43 of 100 (Notable)
4 August 1966	Chettikulam, IN	daily rain	84.0 mm (3.3 in)	50.2 mm (2.0 in)	45 years	43 of 100 (Notable)
4 August 1966	Parnu, EE	daily rain	30.5 mm (1.2 in)	9.3 mm (0.37 in)	65 years	42 of 100 (Notable)
4 August 1966	Manginapudi, IN	daily rain	87.6 mm (3.4 in)	42.9 mm (1.7 in)	24 years	42 of 100 (Notable)
4 August 1966	Oran-Hopital Militaire, DZ	daily high max	38.0 C (100.4 F)	3.0 C (5.4 F)	70 years	41 of 100 (Notable)
4 August 1966	Saint Bernard, US	daily rain	64.0 mm (2.5 in)	29.7 mm (1.2 in)	52 years	41 of 100 (Notable)
4 August 1966	Covington, US	daily low max	25.0 C (77.0 F)	4.4 C (7.9 F)	71 years	41 of 100 (Notable)
4 August 1966	Macklin, CA	daily rain	40.1 mm (1.6 in)	28.2 mm (1.1 in)	5 years	39 of 100 (Notable)
4 August 1966	Nandigama, IN	daily rain	77.2 mm (3.0 in)	42.4 mm (1.7 in)	28 years	39 of 100 (Notable)
4 August 1966	Chadron 3SW, US	daily rain	28.4 mm (1.1 in)	24.1 mm (0.9 in)	13 years	39 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

1815 to 1966

Records set or tied on this calendar date in each year from 1815 to 1966. 1966 had 552 records.

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

Records on 08-04 in each year
Year	Records
1815	1
1827	1
1830	2
1833	1
1835	1
1843	1
1846	1
1847	1
1848	1
1857	1
1859	2
1860	2
1863	1
1865	3
1867	1
1868	1
1870	1
1871	1
1872	2
1874	3
1875	1
1878	3
1879	1
1881	2
1882	1
1883	1
1885	3
1886	1
1887	3
1888	4
1889	2
1890	1
1891	2
1893	2
1894	1
1895	3
1896	4
1897	3
1898	1
1899	7
1900	6
1902	4
1903	18
1904	11
1905	19
1906	14
1907	20
1908	31
1909	27
1910	17
1911	23
1912	51
1913	15
1914	33
1915	85
1916	97
1917	29
1918	95
1919	34
1920	79
1921	67
1922	68
1923	146
1924	132
1925	77
1926	334
1927	136
1928	352
1929	224
1930	698
1931	371
1932	258
1933	347
1934	521
1935	367
1936	719
1937	258
1938	489
1939	433
1940	236
1941	383
1942	303
1943	468
1944	662
1945	355
1946	265
1947	845
1948	558
1949	421
1950	666
1951	680
1952	465
1953	1,017
1954	426
1955	624
1956	437
1957	343
1958	533
1959	303
1960	331
1961	745
1962	470
1963	438
1964	885
1965	409
1966	552
1967	428
1968	280
1969	638
1970	415
1971	813
1972	773
1973	748
1974	1,040
1975	772
1976	801
1977	599
1978	1,051
1979	510
1980	998
1981	636
1982	703
1983	920
1984	722
1985	634
1986	905
1987	892
1988	1,204
1989	738
1990	1,013
1991	769
1992	754
1993	1,046
1994	1,265
1995	1,117
1996	1,143
1997	891
1998	1,423
1999	762
2000	840
2001	1,087
2002	928
2003	1,309
2004	968
2005	1,246
2006	1,131
2007	685
2008	883
2009	681
2010	1,665
2011	1,536
2012	738
2013	452
2014	980
2015	505
2016	732
2017	1,134
2018	760
2019	499
2020	778
2021	691
2022	1,185
2023	1,150
2024	809
2025	840
2026	1,044

Download the Data

Data for records on 1966-08-04: 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).