Weather Records on 4 September 1966

428 weather records were set or tied worldwide on 4 September 1966. Highest significance: Nirmal, IN.

Key Facts for 4 September 1966

On 4 September 1966, 428 weather records were set or tied at long-record stations worldwide.
62 were record highs and 96 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 14 monthly and 412 daily.
Nirmal set an all-time record daily precipitation of 218.0 mm (8.6 in) on 4 September 1966.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 451 records.

Record Map

428 stations

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

Weather records on 4 September 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nirmal	India	Record daily precipitation	218.0 mm (8.6 in)	58 of 100 (Notable)
Griffiss AFB	United States	Record daily precipitation	54.6 mm (2.1 in)	55 of 100 (Notable)
Naduvattam	India	Record daily precipitation	82.2 mm (3.2 in)	52 of 100 (Notable)
Skilderkrans	South Africa	Record daily precipitation	44.0 mm (1.7 in)	52 of 100 (Notable)
Matheran	India	Record daily precipitation	300.6 mm (11.8 in)	51 of 100 (Notable)
Flitwick Grange	South Africa	Record daily precipitation	47.0 mm (1.9 in)	50 of 100 (Notable)
Albany	United States	Record daily precipitation	76.2 mm (3.0 in)	50 of 100 (Notable)
Le Roy	United States	Record daily precipitation	46.5 mm (1.8 in)	48 of 100 (Notable)
Wrangell AP	United States	Record daily precipitation	61.0 mm (2.4 in)	47 of 100 (Notable)
Tonti (Bos)	South Africa	Record daily precipitation	85.0 mm (3.3 in)	46 of 100 (Notable)
Maniwaki 2	Canada	Record daily precipitation	78.5 mm (3.1 in)	45 of 100 (Notable)
Amanzamnyama (Bos)	South Africa	Record daily precipitation	58.5 mm (2.3 in)	45 of 100 (Notable)
Eureka	South Africa	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Grafton	United States	Record daily precipitation	41.9 mm (1.6 in)	45 of 100 (Notable)
Burdett 1 NE	United States	Record daily precipitation	61.0 mm (2.4 in)	43 of 100 (Notable)
Franklin	United States	Record daily precipitation	48.0 mm (1.9 in)	42 of 100 (Notable)
Alexandria Bay 1 SW	United States	Record daily precipitation	40.9 mm (1.6 in)	42 of 100 (Notable)
Riverview	South Africa	Record daily precipitation	37.5 mm (1.5 in)	41 of 100 (Notable)
Gadhchiroli	India	Record daily precipitation	159.0 mm (6.3 in)	40 of 100 (Notable)
Ahuacatlan	Mexico	Record daily precipitation	51.8 mm (2.0 in)	40 of 100 (Notable)
Tabankulu (Bos)	South Africa	Record daily precipitation	52.5 mm (2.1 in)	40 of 100 (Notable)
Karthaus River	United States	Record daily precipitation	78.7 mm (3.1 in)	40 of 100 (Notable)
Panvel	India	Record daily precipitation	326.6 mm (12.9 in)	39 of 100 (Notable)
Kokstad	South Africa	Record daily precipitation	31.0 mm (1.2 in)	38 of 100 (Notable)
Whitehall	United States	Record daily precipitation	40.6 mm (1.6 in)	38 of 100 (Notable)
Paulding	United States	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Manantoddy	India	Record daily precipitation	72.1 mm (2.8 in)	37 of 100 (Notable)
Ratnagiri	India	Record daily precipitation	128.4 mm (5.1 in)	37 of 100 (Notable)
Ventnor	South Africa	Record daily precipitation	34.4 mm (1.4 in)	37 of 100 (Notable)
Alfred	United States	Record daily precipitation	50.8 mm (2.0 in)	37 of 100 (Notable)
Ntywenka (Bos)	South Africa	Record daily precipitation	34.5 mm (1.4 in)	36 of 100 (Notable)
Turners Falls	United States	Record low maximum temperature	14.4 C (57.9 F)	36 of 100 (Notable)
Medak	India	Record daily precipitation	95.0 mm (3.7 in)	35 of 100 (Notable)
Seymour (Mag)	South Africa	Record daily precipitation	29.0 mm (1.1 in)	35 of 100 (Notable)
Clearfield	United States	Record daily precipitation	60.5 mm (2.4 in)	35 of 100 (Notable)
Elliotdale (Tnk)	South Africa	Record daily precipitation	44.0 mm (1.7 in)	34 of 100 (Routine)
Elliot	South Africa	Record daily precipitation	38.0 mm (1.5 in)	34 of 100 (Routine)
Paris	United States	Record daily precipitation	67.8 mm (2.7 in)	34 of 100 (Routine)
The Meadows	South Africa	Record daily precipitation	28.5 mm (1.1 in)	33 of 100 (Routine)
Beardstown	United States	Record daily precipitation	139.7 mm (5.5 in)	33 of 100 (Routine)
Arcade	United States	Record daily precipitation	55.9 mm (2.2 in)	33 of 100 (Routine)
Warren	United States	Record daily precipitation	36.8 mm (1.4 in)	33 of 100 (Routine)
Sebeni (Bos)	South Africa	Record daily precipitation	38.0 mm (1.5 in)	32 of 100 (Routine)
Liberty 1 NE	United States	Record daily precipitation	45.7 mm (1.8 in)	32 of 100 (Routine)
Katbari	India	Record daily precipitation	81.0 mm (3.2 in)	31 of 100 (Routine)
Florida	United States	Record daily precipitation	32.5 mm (1.3 in)	31 of 100 (Routine)
Wanakena Rngr School	United States	Record daily precipitation	33.5 mm (1.3 in)	31 of 100 (Routine)
State College	United States	Record daily precipitation	25.9 mm (1.0 in)	31 of 100 (Routine)
Nandgaon	India	Record daily precipitation	100.0 mm (3.9 in)	30 of 100 (Routine)
Bassein	India	Record daily precipitation	200.0 mm (7.9 in)	30 of 100 (Routine)
Sheffield	United Kingdom	Record high minimum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Guntersville	United States	Record daily precipitation	48.0 mm (1.9 in)	30 of 100 (Routine)
Madison	United States	Record daily precipitation	43.2 mm (1.7 in)	30 of 100 (Routine)
Lewiston	United States	Record daily precipitation	27.7 mm (1.1 in)	30 of 100 (Routine)
Hanover	United States	Record low maximum temperature	14.4 C (57.9 F)	30 of 100 (Routine)
Nashua 2 NNW	United States	Record low maximum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Salur	India	Record daily precipitation	53.2 mm (2.1 in)	29 of 100 (Routine)
Kolguev Severnyi	Russia	Record low minimum temperature	-3.5 C (25.7 F)	29 of 100 (Routine)
Tshatsheni (Bos)	South Africa	Record daily precipitation	30.0 mm (1.2 in)	29 of 100 (Routine)
Mvenyane (Bos)	South Africa	Record daily precipitation	37.5 mm (1.5 in)	29 of 100 (Routine)

Counts by Type and Timescale

428 records

Records set or tied on 4 September 1966 by type: Highest daily maximum 32, Lowest daily maximum 61, Highest daily minimum 30, Lowest daily minimum 35, Heaviest daily rainfall 270.

Records on 4 September 1966 by type
Record type	Records
Highest daily maximum	32
Lowest daily maximum	61
Highest daily minimum	30
Lowest daily minimum	35
Heaviest daily rainfall	270
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 September 1966 by timescale: all-time 2, monthly 14, daily 412.

How Much Records Were Beaten By

374 broken records

Margins by which the 374 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 158.9. Ties are not counted.

Top 20 by Significance

4 September 1966

Top 20 records on 4 September 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 September 1966	Nirmal, IN	all-time rain	218.0 mm (8.6 in)	59.3 mm (2.3 in)	8 years	58 of 100 (Notable)
4 September 1966	Griffiss AFB, US	monthly rain	54.6 mm (2.1 in)	15.2 mm (0.6 in)	65 years	55 of 100 (Notable)
4 September 1966	Naduvattam, IN	daily rain	82.2 mm (3.2 in)	39.0 mm (1.5 in)	48 years	52 of 100 (Notable)
4 September 1966	Skilderkrans, ZA	daily rain	44.0 mm (1.7 in)	44.0 mm (1.7 in)	32 years	52 of 100 (Notable)
4 September 1966	Matheran, IN	daily rain	300.6 mm (11.8 in)	158.9 mm (6.3 in)	24 years	51 of 100 (Notable)
4 September 1966	Flitwick Grange, ZA	daily rain	47.0 mm (1.9 in)	41.9 mm (1.6 in)	20 years	50 of 100 (Notable)
4 September 1966	Albany, US	daily rain	76.2 mm (3.0 in)	47.8 mm (1.9 in)	32 years	50 of 100 (Notable)
4 September 1966	Le Roy, US	daily rain	46.5 mm (1.8 in)	26.9 mm (1.1 in)	59 years	48 of 100 (Notable)
4 September 1966	Wrangell AP, US	daily rain	61.0 mm (2.4 in)	45.5 mm (1.8 in)	16 years	47 of 100 (Notable)
4 September 1966	Tonti (Bos), ZA	monthly rain	85.0 mm (3.3 in)	19.0 mm (0.7 in)	33 years	46 of 100 (Notable)
4 September 1966	Maniwaki 2, CA	monthly rain	78.5 mm (3.1 in)	23.1 mm (0.9 in)	27 years	45 of 100 (Notable)
4 September 1966	Amanzamnyama (Bos), ZA	daily rain	58.5 mm (2.3 in)	35.4 mm (1.4 in)	40 years	45 of 100 (Notable)
4 September 1966	Eureka, ZA	daily rain	34.0 mm (1.3 in)	27.1 mm (1.1 in)	20 years	45 of 100 (Notable)
4 September 1966	Grafton, US	daily rain	41.9 mm (1.6 in)	26.7 mm (1.1 in)	59 years	45 of 100 (Notable)
4 September 1966	Burdett 1 NE, US	daily rain	61.0 mm (2.4 in)	52.6 mm (2.1 in)	3 years	43 of 100 (Notable)
4 September 1966	Franklin, US	daily rain	48.0 mm (1.9 in)	28.2 mm (1.1 in)	60 years	42 of 100 (Notable)
4 September 1966	Alexandria Bay 1 SW, US	daily rain	40.9 mm (1.6 in)	30.0 mm (1.2 in)	31 years	42 of 100 (Notable)
4 September 1966	Riverview, ZA	daily rain	37.5 mm (1.5 in)	24.0 mm (0.9 in)	20 years	41 of 100 (Notable)
4 September 1966	Gadhchiroli, IN	daily rain	159.0 mm (6.3 in)	74.4 mm (2.9 in)	12 years	40 of 100 (Notable)
4 September 1966	Ahuacatlan, MX	daily rain	51.8 mm (2.0 in)	36.1 mm (1.4 in)	29 years	40 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

1802 to 1966

Records set or tied on this calendar date in each year from 1802 to 1966. 1966 had 428 records.

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

Records on 09-04 in each year
Year	Records
1802	1
1805	1
1823	1
1833	1
1837	1
1839	1
1845	1
1847	1
1850	1
1854	1
1856	1
1857	1
1858	1
1861	1
1863	1
1864	1
1867	1
1868	1
1869	2
1871	1
1872	4
1874	1
1875	1
1877	1
1880	4
1881	1
1883	2
1885	3
1887	1
1888	2
1889	1
1890	1
1891	5
1894	4
1895	6
1896	1
1897	4
1898	9
1899	4
1900	1
1901	4
1902	4
1903	2
1904	7
1905	18
1906	16
1907	22
1908	9
1909	23
1910	91
1911	25
1912	29
1913	29
1914	19
1915	37
1916	24
1917	40
1918	96
1919	48
1920	105
1921	105
1922	62
1923	325
1924	167
1925	339
1926	256
1927	68
1928	341
1929	371
1930	102
1931	477
1932	429
1933	424
1934	393
1935	514
1936	309
1937	411
1938	236
1939	434
1940	287
1941	528
1942	323
1943	472
1944	341
1945	542
1946	431
1947	618
1948	409
1949	370
1950	642
1951	404
1952	645
1953	869
1954	372
1955	465
1956	586
1957	250
1958	384
1959	316
1960	552
1961	909
1962	733
1963	443
1964	507
1965	611
1966	428
1967	786
1968	546
1969	510
1970	644
1971	717
1972	513
1973	530
1974	2,279
1975	432
1976	582
1977	386
1978	940
1979	461
1980	355
1981	582
1982	617
1983	1,040
1984	1,107
1985	915
1986	663
1987	685
1988	1,259
1989	681
1990	787
1991	708
1992	1,132
1993	859
1994	1,001
1995	1,287
1996	907
1997	1,452
1998	1,564
1999	1,479
2000	1,336
2001	833
2002	767
2003	1,094
2004	898
2005	998
2006	1,268
2007	1,077
2008	1,335
2009	914
2010	1,804
2011	1,310
2012	1,209
2013	630
2014	461
2015	893
2016	597
2017	881
2018	758
2019	616
2020	957
2021	544
2022	1,256
2023	1,290
2024	985
2025	635
2026	1,222

Download the Data

Data for records on 1966-09-04: 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).

Margin	Records
0 to 20	324
20 to 40	35
40 to 60	11
60 to 80	3
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1