Weather Records on 25 September 1966

334 weather records were set or tied worldwide on 25 September 1966. Highest significance: Boa Viagem, BR.

Key Facts for 25 September 1966

On 25 September 1966, 334 weather records were set or tied at long-record stations worldwide.
158 were record highs and 71 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 327 daily.
Boa Viagem set a monthly record daily precipitation of 47.0 mm (1.9 in) on 25 September 1966.
Across 163 earlier years (1825 to 2026) the same calendar date averaged 426 records.

Record Map

334 stations

334 station records on 25 September 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 September 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Boa Viagem	Brazil	Record daily precipitation	47.0 mm (1.9 in)	63 of 100 (Major)
Sao Miguel	Brazil	Record daily precipitation	97.0 mm (3.8 in)	63 of 100 (Major)
Feiticeiro	Brazil	Record daily precipitation	78.9 mm (3.1 in)	53 of 100 (Notable)
Traipu	Brazil	Record daily precipitation	39.9 mm (1.6 in)	53 of 100 (Notable)
Estancia	Brazil	Record daily precipitation	46.5 mm (1.8 in)	50 of 100 (Notable)
Amersfoort (Pol)	South Africa	Record daily precipitation	42.0 mm (1.7 in)	45 of 100 (Notable)
Buffalo	United States	Record daily precipitation	30.5 mm (1.2 in)	42 of 100 (Notable)
Jamkhandi	India	Record daily precipitation	87.6 mm (3.4 in)	39 of 100 (Notable)
Arantangi	India	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Paripiranga	Brazil	Record daily precipitation	38.6 mm (1.5 in)	38 of 100 (Notable)
Sans Souci (Public School)	Australia	Record daily precipitation	29.5 mm (1.2 in)	37 of 100 (Notable)
Newport	United States	Record daily precipitation	31.2 mm (1.2 in)	36 of 100 (Notable)
Japaratuba	Brazil	Record daily precipitation	48.2 mm (1.9 in)	35 of 100 (Notable)
Thalipilly	India	Record daily precipitation	76.2 mm (3.0 in)	34 of 100 (Routine)
Manchester	United States	Record low maximum temperature	10.6 C (51.1 F)	34 of 100 (Routine)
Pacatuba (Pacatiba)	Brazil	Record daily precipitation	35.0 mm (1.4 in)	32 of 100 (Routine)
Daytona Beach	United States	Record low minimum temperature	17.2 C (63.0 F)	31 of 100 (Routine)
Elberta	United States	Record high minimum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Bajramaly	Turkmenistan	Record high minimum temperature	20.5 C (68.9 F)	30 of 100 (Routine)
Lund	United States	Record high minimum temperature	9.4 C (48.9 F)	30 of 100 (Routine)
Patillas Dam	Puerto Rico [United States]	Record daily precipitation	83.1 mm (3.3 in)	29 of 100 (Routine)
Denton 2 E	United States	Record low maximum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Evanston 1 E	United States	Record high minimum temperature	7.2 C (45.0 F)	28 of 100 (Routine)
Kon-Kolodez	Russia	Record low minimum temperature	-2.3 C (27.9 F)	27 of 100 (Routine)
Medak	India	Record daily precipitation	45.0 mm (1.8 in)	26 of 100 (Routine)
Bones I Bardu	Norway	Record snow depth	26.0 cm (10.2 in)	26 of 100 (Routine)
Coimbatore	India	Record daily precipitation	28.6 mm (1.1 in)	25 of 100 (Routine)
Sendamangalam	India	Record daily precipitation	64.4 mm (2.5 in)	25 of 100 (Routine)
Kilanilai	India	Record daily precipitation	52.0 mm (2.0 in)	25 of 100 (Routine)
Buique	Brazil	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Salem	India	Record daily precipitation	26.6 mm (1.0 in)	24 of 100 (Routine)
Waialua 847	United States	Record high maximum temperature	33.3 C (91.9 F)	23 of 100 (Routine)
Esplanada	Brazil	Record daily precipitation	31.2 mm (1.2 in)	22 of 100 (Routine)
Kem-Port	Russia	Record low minimum temperature	-2.6 C (27.3 F)	22 of 100 (Routine)
Hamar-Daban	Russia	Record high minimum temperature	8.0 C (46.4 F)	22 of 100 (Routine)
Lake Placid 2 SW	United States	Record low maximum temperature	26.1 C (79.0 F)	22 of 100 (Routine)
Tajique 4 N	United States	Record high minimum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Tohatchi 1 ESE	United States	Record high minimum temperature	17.2 C (63.0 F)	22 of 100 (Routine)
Stratford	United States	Record high maximum temperature	35.0 C (95.0 F)	22 of 100 (Routine)
Oak City	United States	Record high minimum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Spanish Fk Pwr House	United States	Record high minimum temperature	16.1 C (61.0 F)	22 of 100 (Routine)
Utah Lake Lehi	United States	Record high minimum temperature	18.9 C (66.0 F)	22 of 100 (Routine)
Athani	India	Record daily precipitation	105.2 mm (4.1 in)	21 of 100 (Routine)
Kokpekty	Kazakhstan	Record high maximum temperature	27.6 C (81.7 F)	21 of 100 (Routine)
Barguzin	Russia	Record high maximum temperature	26.2 C (79.2 F)	21 of 100 (Routine)
Zmeinogorsk	Russia	Record high maximum temperature	30.6 C (87.1 F)	21 of 100 (Routine)
Riksgransen	Sweden	Record low minimum temperature	-4.4 C (24.1 F)	21 of 100 (Routine)
Ico	Brazil	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Barra de Santa Rosa	Brazil	Record daily precipitation	12.8 mm (0.5 in)	20 of 100 (Routine)
Frei Paulo	Brazil	Record daily precipitation	20.2 mm (0.8 in)	20 of 100 (Routine)
Espirito Santo	Brazil	Record daily precipitation	21.0 mm (0.8 in)	20 of 100 (Routine)
Saboeiro	Brazil	Record daily precipitation	9.3 mm (0.37 in)	20 of 100 (Routine)
Agua Branca	Brazil	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Monte Santo	Brazil	Record daily precipitation	11.3 mm (0.4 in)	20 of 100 (Routine)
Euclides da Cunha (Cumbe)	Brazil	Record daily precipitation	24.2 mm (1.0 in)	20 of 100 (Routine)
Areia (Ufpb)	Brazil	Record daily precipitation	23.8 mm (0.9 in)	20 of 100 (Routine)
White Peak	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Correntes	Brazil	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Uthamapalayam	India	Record daily precipitation	24.2 mm (1.0 in)	20 of 100 (Routine)
Kjusjur	Russia	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)

Counts by Type and Timescale

334 records

Records set or tied on 25 September 1966 by type: Highest daily maximum 72, Lowest daily maximum 42, Highest daily minimum 86, Lowest daily minimum 29, Heaviest daily rainfall 104, Deepest snow cover 1.

Records on 25 September 1966 by type
Record type	Records
Highest daily maximum	72
Lowest daily maximum	42
Highest daily minimum	86
Lowest daily minimum	29
Heaviest daily rainfall	104
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 25 September 1966 by timescale: all-time 0, monthly 7, daily 327.

How Much Records Were Beaten By

252 broken records

Margins by which the 252 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 70.0. Ties are not counted.

Top 20 by Significance

25 September 1966

Top 20 records on 25 September 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 September 1966	Boa Viagem, BR	monthly rain	47.0 mm (1.9 in)	26.5 mm (1.0 in)	27 years	63 of 100 (Major)
25 September 1966	Sao Miguel, BR	monthly rain	97.0 mm (3.8 in)	57.0 mm (2.2 in)	27 years	63 of 100 (Major)
25 September 1966	Feiticeiro, BR	monthly rain	78.9 mm (3.1 in)	70.0 mm (2.8 in)	2 years	53 of 100 (Notable)
25 September 1966	Traipu, BR	daily rain	39.9 mm (1.6 in)	30.6 mm (1.2 in)	28 years	53 of 100 (Notable)
25 September 1966	Estancia, BR	daily rain	46.5 mm (1.8 in)	36.3 mm (1.4 in)	20 years	50 of 100 (Notable)
25 September 1966	Amersfoort (Pol), ZA	daily rain	42.0 mm (1.7 in)	25.7 mm (1.0 in)	48 years	45 of 100 (Notable)
25 September 1966	Buffalo, US	daily rain	30.5 mm (1.2 in)	21.4 mm (0.8 in)	57 years	42 of 100 (Notable)
25 September 1966	Jamkhandi, IN	daily rain	87.6 mm (3.4 in)	36.8 mm (1.4 in)	51 years	39 of 100 (Notable)
25 September 1966	Arantangi, IN	daily rain	61.0 mm (2.4 in)	26.7 mm (1.1 in)	52 years	39 of 100 (Notable)
25 September 1966	Paripiranga, BR	daily rain	38.6 mm (1.5 in)	16.0 mm (0.6 in)	28 years	38 of 100 (Notable)
25 September 1966	Sans Souci (Public School), AU	daily rain	29.5 mm (1.2 in)	16.8 mm (0.7 in)	48 years	37 of 100 (Notable)
25 September 1966	Newport, US	daily rain	31.2 mm (1.2 in)	16.0 mm (0.6 in)	44 years	36 of 100 (Notable)
25 September 1966	Japaratuba, BR	daily rain	48.2 mm (1.9 in)	22.7 mm (0.9 in)	21 years	35 of 100 (Notable)
25 September 1966	Thalipilly, IN	daily rain	76.2 mm (3.0 in)	32.0 mm (1.3 in)	36 years	34 of 100 (Routine)
25 September 1966	Manchester, US	daily low max	10.6 C (51.1 F)	1.6 C (2.9 F)	78 years	34 of 100 (Routine)
25 September 1966	Pacatuba (Pacatiba), BR	daily rain	35.0 mm (1.4 in)	16.1 mm (0.6 in)	16 years	32 of 100 (Routine)
25 September 1966	Daytona Beach, US	daily low min	17.2 C (63.0 F)	2.8 C (5.0 F)	37 years	31 of 100 (Routine)
25 September 1966	Elberta, US	daily high min	18.3 C (64.9 F)	3.9 C (7.0 F)	56 years	31 of 100 (Routine)
25 September 1966	Bajramaly, TM	daily high min	20.5 C (68.9 F)	1.5 C (2.7 F)	67 years	30 of 100 (Routine)
25 September 1966	Lund, US	daily high min	9.4 C (48.9 F)	2.7 C (4.9 F)	63 years	30 of 100 (Routine)

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

1825 to 1966

Records set or tied on this calendar date in each year from 1825 to 1966. 1966 had 334 records.

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

Records on 09-25 in each year
Year	Records
1825	1
1834	1
1836	1
1842	1
1843	1
1847	1
1851	1
1852	1
1855	1
1857	2
1859	1
1860	1
1863	1
1865	1
1866	2
1867	2
1868	1
1871	2
1872	1
1874	1
1875	1
1877	3
1879	2
1881	3
1884	3
1885	6
1886	1
1887	3
1889	7
1891	3
1893	7
1894	3
1895	5
1896	5
1897	2
1898	1
1899	2
1900	7
1901	6
1902	11
1903	4
1904	10
1905	16
1906	7
1907	35
1908	20
1909	22
1910	5
1911	9
1912	63
1913	13
1914	15
1915	43
1916	139
1917	138
1918	16
1919	20
1920	75
1921	32
1922	47
1923	68
1924	157
1925	141
1926	740
1927	166
1928	480
1929	158
1930	489
1931	500
1932	260
1933	542
1934	394
1935	258
1936	274
1937	190
1938	335
1939	454
1940	517
1941	269
1942	970
1943	488
1944	246
1945	514
1946	292
1947	666
1948	501
1949	479
1950	1,163
1951	639
1952	515
1953	242
1954	292
1955	546
1956	503
1957	231
1958	454
1959	396
1960	694
1961	530
1962	305
1963	602
1964	403
1965	690
1966	334
1967	428
1968	300
1969	196
1970	783
1971	323
1972	706
1973	650
1974	995
1975	1,166
1976	541
1977	875
1978	462
1979	719
1980	687
1981	669
1982	759
1983	647
1984	1,305
1985	446
1986	1,766
1987	560
1988	571
1989	1,367
1990	875
1991	1,243
1992	1,346
1993	1,015
1994	666
1995	1,013
1996	648
1997	1,278
1998	1,346
1999	804
2000	1,536
2001	1,536
2002	876
2003	758
2004	519
2005	1,484
2006	767
2007	1,284
2008	766
2009	854
2010	1,125
2011	763
2012	505
2013	615
2014	800
2015	868
2016	781
2017	1,253
2018	648
2019	530
2020	1,089
2021	355
2022	301
2023	580
2024	1,120
2025	569
2026	473

Download the Data

Data for records on 1966-09-25: 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 10	219
10 to 20	16
20 to 30	6
30 to 40	8
40 to 50	1
50 to 60	1
60 to 70	1