Weather Records on 27 September 1966

426 weather records were set or tied worldwide on 27 September 1966. Highest significance: Itaporanga (Misericordia), BR.

Key Facts for 27 September 1966

On 27 September 1966, 426 weather records were set or tied at long-record stations worldwide.
113 were record highs and 82 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 37 monthly and 389 daily.
Itaporanga (Misericordia) set a monthly record daily precipitation of 73.6 mm (2.9 in) on 27 September 1966.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 451 records.

Record Map

426 stations

426 station records on 27 September 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Itaporanga (Misericordia)	Brazil	Record daily precipitation	73.6 mm (2.9 in)	67 of 100 (Major)
Milha	Brazil	Record daily precipitation	130.0 mm (5.1 in)	60 of 100 (Major)
Maceio (Aeroporto)	Brazil	Record daily precipitation	72.4 mm (2.9 in)	57 of 100 (Notable)
Kenton	United States	Record daily precipitation	75.2 mm (3.0 in)	57 of 100 (Notable)
Araruna	Brazil	Record daily precipitation	35.0 mm (1.4 in)	55 of 100 (Notable)
Kallatty	India	Record daily precipitation	230.0 mm (9.1 in)	55 of 100 (Notable)
Sao Paulo Do Potengi	Brazil	Record daily precipitation	70.0 mm (2.8 in)	54 of 100 (Notable)
Susendal	Norway	Record snow depth	29.0 cm (11.4 in)	53 of 100 (Notable)
Alattur	India	Record daily precipitation	87.6 mm (3.4 in)	48 of 100 (Notable)
Alur	India	Record daily precipitation	95.3 mm (3.8 in)	47 of 100 (Notable)
Sattur	India	Record daily precipitation	55.0 mm (2.2 in)	47 of 100 (Notable)
Shamakhy	Azerbaijan	Record daily precipitation	58.1 mm (2.3 in)	45 of 100 (Notable)
Saidapet	India	Record daily precipitation	76.0 mm (3.0 in)	45 of 100 (Notable)
Lajes (Itaretama)	Brazil	Record daily precipitation	38.0 mm (1.5 in)	44 of 100 (Notable)
Mudigere	India	Record daily precipitation	116.8 mm (4.6 in)	44 of 100 (Notable)
Tiruvallur	India	Record daily precipitation	117.8 mm (4.6 in)	44 of 100 (Notable)
Buffalo 2N	United States	Record daily precipitation	97.3 mm (3.8 in)	44 of 100 (Notable)
Salem	United States	Record daily precipitation	76.5 mm (3.0 in)	44 of 100 (Notable)
Rookwood	Australia	Record daily precipitation	41.9 mm (1.6 in)	43 of 100 (Notable)
Sullurpet	India	Record daily precipitation	135.0 mm (5.3 in)	42 of 100 (Notable)
Venkatagiri	India	Record daily precipitation	67.0 mm (2.6 in)	42 of 100 (Notable)
Sriperumbudur	India	Record daily precipitation	83.2 mm (3.3 in)	41 of 100 (Notable)
Lebanon 2W	United States	Record daily precipitation	74.7 mm (2.9 in)	41 of 100 (Notable)
Boise City 2 E	United States	Record daily precipitation	49.5 mm (1.9 in)	41 of 100 (Notable)
Deland 1 SSE	United States	Record daily precipitation	74.9 mm (2.9 in)	40 of 100 (Notable)
Satyavedu	India	Record daily precipitation	81.0 mm (3.2 in)	38 of 100 (Notable)
Coimbatore	India	Record daily precipitation	55.6 mm (2.2 in)	38 of 100 (Notable)
Sivaganga	India	Record daily precipitation	122.0 mm (4.8 in)	38 of 100 (Notable)
Ko253Lpatti Sr	India	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Haparanda	Sweden	Record low minimum temperature	-8.1 C (17.4 F)	37 of 100 (Notable)
Rocky Ford 2 SE	United States	Record daily precipitation	54.4 mm (2.1 in)	37 of 100 (Notable)
Greenville 6 N	United States	Record daily precipitation	79.2 mm (3.1 in)	37 of 100 (Notable)
Warwick Park	Australia	Record daily precipitation	69.9 mm (2.8 in)	36 of 100 (Notable)
Pitea	Sweden	Record low minimum temperature	-5.5 C (22.1 F)	36 of 100 (Notable)
Houston	United States	Record daily precipitation	67.8 mm (2.7 in)	36 of 100 (Notable)
Fantan	Armenia	Record daily precipitation	30.1 mm (1.2 in)	35 of 100 (Notable)
Cerro Cora	Brazil	Record daily precipitation	32.4 mm (1.3 in)	35 of 100 (Notable)
Sao Miguel Dos Campos	Brazil	Record daily precipitation	37.1 mm (1.5 in)	35 of 100 (Notable)
Ennore Obsy	India	Record daily precipitation	49.4 mm (1.9 in)	35 of 100 (Notable)
Karasjok	Norway	Record low minimum temperature	-14.2 C (6.4 F)	35 of 100 (Notable)
Haswell	United States	Record daily precipitation	32.0 mm (1.3 in)	34 of 100 (Routine)
Mulungu (Camarazal)	Brazil	Record daily precipitation	28.5 mm (1.1 in)	33 of 100 (Routine)
Arkalgud	India	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Umea	Sweden	Record low minimum temperature	-5.6 C (21.9 F)	33 of 100 (Routine)
Ordway 4 W	United States	Record daily precipitation	61.7 mm (2.4 in)	33 of 100 (Routine)
Miami	United States	Record daily precipitation	53.8 mm (2.1 in)	33 of 100 (Routine)
Fort Cochin	India	Record daily precipitation	94.4 mm (3.7 in)	32 of 100 (Routine)
Madras/Minambakkam	India	Record daily precipitation	58.5 mm (2.3 in)	32 of 100 (Routine)
Achinsk	Russia	Record high minimum temperature	13.6 C (56.5 F)	31 of 100 (Routine)
Bilasuvar	Azerbaijan	Record daily precipitation	31.6 mm (1.2 in)	30 of 100 (Routine)
Amguri	India	Record daily precipitation	78.7 mm (3.1 in)	30 of 100 (Routine)
Sholavandan	India	Record daily precipitation	75.0 mm (3.0 in)	30 of 100 (Routine)
Celaya (Smn)	Mexico	Record low minimum temperature	5.6 C (42.1 F)	30 of 100 (Routine)
Gudur	India	Record daily precipitation	55.8 mm (2.2 in)	29 of 100 (Routine)
Srirangpatnam	India	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Ponneri	India	Record daily precipitation	120.0 mm (4.7 in)	29 of 100 (Routine)
Huajuapan de Leon (Smn)	Mexico	Record daily precipitation	71.9 mm (2.8 in)	29 of 100 (Routine)
Krakmo	Norway	Record snow depth	21.0 cm (8.3 in)	29 of 100 (Routine)
Lodi	United States	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Pikeville	United States	Record daily precipitation	42.4 mm (1.7 in)	29 of 100 (Routine)

Counts by Type and Timescale

426 records

Records set or tied on 27 September 1966 by type: Highest daily maximum 48, Lowest daily maximum 47, Highest daily minimum 65, Lowest daily minimum 35, Heaviest daily rainfall 219, Deepest snow cover 12.

Records on 27 September 1966 by type
Record type	Records
Highest daily maximum	48
Lowest daily maximum	47
Highest daily minimum	65
Lowest daily minimum	35
Heaviest daily rainfall	219
Heaviest daily snowfall	0
Deepest snow cover	12

Records on 27 September 1966 by timescale: all-time 0, monthly 37, daily 389.

How Much Records Were Beaten By

366 broken records

Margins by which the 366 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 155.0. Ties are not counted.

Top 20 by Significance

27 September 1966

Top 20 records on 27 September 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1966	Itaporanga (Misericordia), BR	monthly rain	73.6 mm (2.9 in)	39.1 mm (1.5 in)	41 years	67 of 100 (Major)
27 September 1966	Milha, BR	monthly rain	130.0 mm (5.1 in)	97.0 mm (3.8 in)	21 years	60 of 100 (Major)
27 September 1966	Maceio (Aeroporto), BR	daily rain	72.4 mm (2.9 in)	55.0 mm (2.2 in)	41 years	57 of 100 (Notable)
27 September 1966	Kenton, US	daily rain	75.2 mm (3.0 in)	43.4 mm (1.7 in)	61 years	57 of 100 (Notable)
27 September 1966	Araruna, BR	daily rain	35.0 mm (1.4 in)	25.3 mm (1.0 in)	47 years	55 of 100 (Notable)
27 September 1966	Kallatty, IN	monthly rain	230.0 mm (9.1 in)	155.0 mm (6.1 in)	1 year	55 of 100 (Notable)
27 September 1966	Sao Paulo Do Potengi, BR	monthly rain	70.0 mm (2.8 in)	30.0 mm (1.2 in)	4 years	54 of 100 (Notable)
27 September 1966	Susendal, NO	monthly snow depth	29.0 cm (11.4 in)	9.0 cm (3.5 in)	44 years	53 of 100 (Notable)
27 September 1966	Alattur, IN	daily rain	87.6 mm (3.4 in)	54.3 mm (2.1 in)	7 years	48 of 100 (Notable)
27 September 1966	Alur, IN	monthly rain	95.3 mm (3.8 in)	13.5 mm (0.5 in)	65 years	47 of 100 (Notable)
27 September 1966	Sattur, IN	daily rain	55.0 mm (2.2 in)	45.6 mm (1.8 in)	15 years	47 of 100 (Notable)
27 September 1966	Shamakhy, AZ	daily rain	58.1 mm (2.3 in)	38.7 mm (1.5 in)	11 years	45 of 100 (Notable)
27 September 1966	Saidapet, IN	daily rain	76.0 mm (3.0 in)	49.8 mm (2.0 in)	48 years	45 of 100 (Notable)
27 September 1966	Lajes (Itaretama), BR	monthly rain	38.0 mm (1.5 in)	31.0 mm (1.2 in)	0 years	44 of 100 (Notable)
27 September 1966	Mudigere, IN	monthly rain	116.8 mm (4.6 in)	27.9 mm (1.1 in)	15 years	44 of 100 (Notable)
27 September 1966	Tiruvallur, IN	daily rain	117.8 mm (4.6 in)	61.4 mm (2.4 in)	3 years	44 of 100 (Notable)
27 September 1966	Buffalo 2N, US	daily rain	97.3 mm (3.8 in)	62.0 mm (2.4 in)	32 years	44 of 100 (Notable)
27 September 1966	Salem, US	daily rain	76.5 mm (3.0 in)	38.9 mm (1.5 in)	45 years	44 of 100 (Notable)
27 September 1966	Rookwood, AU	daily rain	41.9 mm (1.6 in)	36.8 mm (1.4 in)	41 years	43 of 100 (Notable)
27 September 1966	Sullurpet, IN	monthly rain	135.0 mm (5.3 in)	16.6 mm (0.7 in)	57 years	42 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

1799 to 1966

Records set or tied on this calendar date in each year from 1799 to 1966. 1966 had 426 records.

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

Records on 09-27 in each year
Year	Records
1799	1
1828	1
1836	2
1847	1
1851	1
1854	2
1855	2
1859	2
1866	2
1867	3
1874	1
1875	1
1877	2
1880	1
1881	4
1882	1
1885	5
1887	1
1890	3
1891	1
1892	1
1893	1
1894	5
1895	6
1896	1
1897	2
1898	4
1899	1
1900	5
1901	3
1902	12
1903	7
1904	12
1905	21
1906	21
1907	9
1908	36
1909	17
1910	20
1911	31
1912	25
1913	27
1914	24
1915	80
1916	57
1917	41
1918	58
1919	45
1920	54
1921	26
1922	111
1923	125
1924	115
1925	129
1926	581
1927	244
1928	288
1929	225
1930	178
1931	222
1932	194
1933	559
1934	298
1935	319
1936	435
1937	309
1938	366
1939	572
1940	706
1941	257
1942	1,353
1943	503
1944	323
1945	475
1946	387
1947	813
1948	405
1949	407
1950	223
1951	480
1952	539
1953	567
1954	507
1955	386
1956	825
1957	644
1958	585
1959	582
1960	337
1961	376
1962	352
1963	849
1964	724
1965	688
1966	426
1967	502
1968	286
1969	233
1970	773
1971	762
1972	989
1973	1,031
1974	408
1975	790
1976	905
1977	852
1978	773
1979	741
1980	559
1981	680
1982	1,076
1983	791
1984	1,297
1985	661
1986	1,772
1987	1,013
1988	494
1989	852
1990	379
1991	894
1992	659
1993	727
1994	764
1995	698
1996	1,468
1997	730
1998	1,774
1999	1,059
2000	1,031
2001	980
2002	992
2003	830
2004	665
2005	1,061
2006	596
2007	1,091
2008	659
2009	987
2010	1,153
2011	965
2012	624
2013	823
2014	813
2015	664
2016	600
2017	891
2018	600
2019	755
2020	659
2021	893
2022	642
2023	747
2024	1,449
2025	272
2026	358

Download the Data

Data for records on 1966-09-27: 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	313
20 to 40	38
40 to 60	7
60 to 80	5
80 to 100	2
100 to 120	0
120 to 140	0
140 to 160	1