Weather Records on 27 September 1975

790 weather records were set or tied worldwide on 27 September 1975. Highest significance: Koebenhavn - Meteorologisk Ins, DK.

Key Facts for 27 September 1975

On 27 September 1975, 790 weather records were set or tied at long-record stations worldwide.
78 were record highs and 261 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 25 monthly and 765 daily.
Koebenhavn - Meteorologisk Ins set a daily record precipitation of 33.6 mm (1.3 in) on 27 September 1975.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 449 records.

Record Map

790 stations

790 station records on 27 September 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Koebenhavn - Meteorologisk Ins	Denmark	Record daily precipitation	33.6 mm (1.3 in)	75 of 100 (Major)
Durham	United Kingdom	Record daily precipitation	35.8 mm (1.4 in)	68 of 100 (Major)
Ashburnham	United States	Record daily precipitation	64.5 mm (2.5 in)	63 of 100 (Major)
Norfolk 2 SW	United States	Record daily precipitation	81.8 mm (3.2 in)	58 of 100 (Notable)
Erldunda	Australia	Record daily precipitation	40.6 mm (1.6 in)	56 of 100 (Notable)
Fitchburg 4 SE	United States	Record daily precipitation	66.0 mm (2.6 in)	55 of 100 (Notable)
Burlington	United States	Record daily precipitation	119.9 mm (4.7 in)	54 of 100 (Notable)
Westfield	United States	Record daily precipitation	114.0 mm (4.5 in)	54 of 100 (Notable)
Barkhamsted	United States	Record daily precipitation	99.3 mm (3.9 in)	53 of 100 (Notable)
South Johnstone Exp STN	Australia	Record daily precipitation	66.0 mm (2.6 in)	52 of 100 (Notable)
Cape Hermes	South Africa	Record daily precipitation	94.0 mm (3.7 in)	52 of 100 (Notable)
Santiago de Compostela/Labacol	Spain	Record daily precipitation	119.0 mm (4.7 in)	51 of 100 (Notable)
Middletown 4 W	United States	Record daily precipitation	72.9 mm (2.9 in)	51 of 100 (Notable)
Fazenda Santa Amelia	Brazil	Record daily precipitation	47.5 mm (1.9 in)	50 of 100 (Notable)
Holyoke	United States	Record daily precipitation	80.3 mm (3.2 in)	49 of 100 (Notable)
Nqutu (Tnk)	South Africa	Record daily precipitation	45.0 mm (1.8 in)	48 of 100 (Notable)
White Cliffs (Tongo)	Australia	Record daily precipitation	25.4 mm (1.0 in)	46 of 100 (Notable)
Wilo (Bos)	South Africa	Record daily precipitation	101.5 mm (4.0 in)	46 of 100 (Notable)
Intake	South Africa	Record daily precipitation	44.5 mm (1.8 in)	46 of 100 (Notable)
Witsieshoek	South Africa	Record daily precipitation	55.0 mm (2.2 in)	46 of 100 (Notable)
Nongoma	South Africa	Record daily precipitation	75.0 mm (3.0 in)	46 of 100 (Notable)
Sweetwater	South Africa	Record daily precipitation	40.5 mm (1.6 in)	45 of 100 (Notable)
Witbankfontein	South Africa	Record daily precipitation	51.5 mm (2.0 in)	45 of 100 (Notable)
Spitskrans	South Africa	Record daily precipitation	33.6 mm (1.3 in)	45 of 100 (Notable)
Dublin	United States	Record daily precipitation	50.8 mm (2.0 in)	45 of 100 (Notable)
West Burke	United States	Record daily precipitation	70.9 mm (2.8 in)	45 of 100 (Notable)
Ponte Guatapara	Brazil	Record daily precipitation	56.2 mm (2.2 in)	44 of 100 (Notable)
Grand Falls	Canada	Record daily precipitation	44.5 mm (1.8 in)	44 of 100 (Notable)
Ficksburg	South Africa	Record daily precipitation	37.5 mm (1.5 in)	44 of 100 (Notable)
Svalov	Sweden	Record daily precipitation	31.4 mm (1.2 in)	44 of 100 (Notable)
Corning	United States	Record daily precipitation	54.9 mm (2.2 in)	44 of 100 (Notable)
Mequatlingsnek	South Africa	Record daily precipitation	25.5 mm (1.0 in)	43 of 100 (Notable)
Carmel	United States	Record daily precipitation	80.0 mm (3.1 in)	43 of 100 (Notable)
Kopinge	Sweden	Record daily precipitation	26.0 mm (1.0 in)	42 of 100 (Notable)
Livingston	United States	Record low minimum temperature	3.3 C (37.9 F)	42 of 100 (Notable)
Hardwick	United States	Record daily precipitation	74.2 mm (2.9 in)	42 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	38.6 mm (1.5 in)	42 of 100 (Notable)
Koebenhavn: Landbohojskolen-1	Denmark	Record daily precipitation	26.7 mm (1.1 in)	41 of 100 (Notable)
Ingenio Tamazula	Mexico	Record low minimum temperature	10.0 C (50.0 F)	41 of 100 (Notable)
Altamura	South Africa	Record daily precipitation	32.0 mm (1.3 in)	41 of 100 (Notable)
Woodfort	South Africa	Record daily precipitation	40.0 mm (1.6 in)	41 of 100 (Notable)
San Luis de la Paz	Mexico	Record low minimum temperature	4.4 C (39.9 F)	40 of 100 (Notable)
Hammenhog	Sweden	Record daily precipitation	29.5 mm (1.2 in)	40 of 100 (Notable)
Russellville	United States	Record low maximum temperature	13.9 C (57.0 F)	40 of 100 (Notable)
Hightstown 2 W	United States	Record daily precipitation	94.7 mm (3.7 in)	40 of 100 (Notable)
Ladysdale	South Africa	Record daily precipitation	28.0 mm (1.1 in)	39 of 100 (Notable)
Westminter Estate	South Africa	Record daily precipitation	28.0 mm (1.1 in)	39 of 100 (Notable)
Marquard - Pol 29	South Africa	Record daily precipitation	29.5 mm (1.2 in)	39 of 100 (Notable)
Valley Head	United States	Record low maximum temperature	12.8 C (55.0 F)	39 of 100 (Notable)
Shelburne Falls	United States	Record daily precipitation	44.7 mm (1.8 in)	39 of 100 (Notable)
Peeramon	Australia	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Corner Brook	Canada	Record daily precipitation	42.9 mm (1.7 in)	38 of 100 (Notable)
Irapuato	Mexico	Record low minimum temperature	6.7 C (44.1 F)	38 of 100 (Notable)
Kentani (Bos)	South Africa	Record daily precipitation	43.0 mm (1.7 in)	38 of 100 (Notable)
Fort Donald (Bos)	South Africa	Record daily precipitation	25.5 mm (1.0 in)	38 of 100 (Notable)
Hawkinsville	United States	Record low minimum temperature	5.6 C (42.1 F)	38 of 100 (Notable)
George School	United States	Record daily precipitation	45.7 mm (1.8 in)	38 of 100 (Notable)
Motuca	Brazil	Record daily precipitation	45.1 mm (1.8 in)	37 of 100 (Notable)
Tonti (Bos)	South Africa	Record daily precipitation	28.0 mm (1.1 in)	37 of 100 (Notable)
Kaallaagte	South Africa	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)

Counts by Type and Timescale

790 records

Records set or tied on 27 September 1975 by type: Highest daily maximum 32, Lowest daily maximum 78, Highest daily minimum 46, Lowest daily minimum 183, Heaviest daily rainfall 448, Heaviest daily snowfall 3.

Records on 27 September 1975 by type
Record type	Records
Highest daily maximum	32
Lowest daily maximum	78
Highest daily minimum	46
Lowest daily minimum	183
Heaviest daily rainfall	448
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 27 September 1975 by timescale: all-time 0, monthly 25, daily 765.

How Much Records Were Beaten By

686 broken records

Margins by which the 686 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 106.7. Ties are not counted.

Top 20 by Significance

27 September 1975

Top 20 records on 27 September 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1975	Koebenhavn - Meteorologisk Ins, DK	daily rain	33.6 mm (1.3 in)	20.8 mm (0.8 in)	89 years	75 of 100 (Major)
27 September 1975	Durham, GB	daily rain	35.8 mm (1.4 in)	23.0 mm (0.9 in)	65 years	68 of 100 (Major)
27 September 1975	Ashburnham, US	daily rain	64.5 mm (2.5 in)	61.2 mm (2.4 in)	68 years	63 of 100 (Major)
27 September 1975	Norfolk 2 SW, US	daily rain	81.8 mm (3.2 in)	64.8 mm (2.6 in)	32 years	58 of 100 (Notable)
27 September 1975	Erldunda, AU	daily rain	40.6 mm (1.6 in)	40.6 mm (1.6 in)	41 years	56 of 100 (Notable)
27 September 1975	Fitchburg 4 SE, US	daily rain	66.0 mm (2.6 in)	49.5 mm (1.9 in)	65 years	55 of 100 (Notable)
27 September 1975	Burlington, US	daily rain	119.9 mm (4.7 in)	106.7 mm (4.2 in)	36 years	54 of 100 (Notable)
27 September 1975	Westfield, US	daily rain	114.0 mm (4.5 in)	73.4 mm (2.9 in)	32 years	54 of 100 (Notable)
27 September 1975	Barkhamsted, US	daily rain	99.3 mm (3.9 in)	85.3 mm (3.4 in)	32 years	53 of 100 (Notable)
27 September 1975	South Johnstone Exp STN, AU	daily rain	66.0 mm (2.6 in)	38.6 mm (1.5 in)	28 years	52 of 100 (Notable)
27 September 1975	Cape Hermes, ZA	daily rain	94.0 mm (3.7 in)	73.7 mm (2.9 in)	24 years	52 of 100 (Notable)
27 September 1975	Santiago de Compostela/Labacol, ES	monthly rain	119.0 mm (4.7 in)	36.2 mm (1.4 in)	26 years	51 of 100 (Notable)
27 September 1975	Middletown 4 W, US	daily rain	72.9 mm (2.9 in)	18.0 mm (0.7 in)	105 years	51 of 100 (Notable)
27 September 1975	Fazenda Santa Amelia, BR	daily rain	47.5 mm (1.9 in)	42.9 mm (1.7 in)	26 years	50 of 100 (Notable)
27 September 1975	Holyoke, US	daily rain	80.3 mm (3.2 in)	38.4 mm (1.5 in)	56 years	49 of 100 (Notable)
27 September 1975	Nqutu (Tnk), ZA	daily rain	45.0 mm (1.8 in)	38.5 mm (1.5 in)	14 years	48 of 100 (Notable)
27 September 1975	White Cliffs (Tongo), AU	daily rain	25.4 mm (1.0 in)	12.7 mm (0.5 in)	70 years	46 of 100 (Notable)
27 September 1975	Wilo (Bos), ZA	daily rain	101.5 mm (4.0 in)	80.5 mm (3.2 in)	4 years	46 of 100 (Notable)
27 September 1975	Intake, ZA	daily rain	44.5 mm (1.8 in)	25.7 mm (1.0 in)	48 years	46 of 100 (Notable)
27 September 1975	Witsieshoek, ZA	daily rain	55.0 mm (2.2 in)	29.1 mm (1.1 in)	60 years	46 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 1975

Records set or tied on this calendar date in each year from 1799 to 1975. 1975 had 790 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 1975-09-27: 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	614
20 to 40	54
40 to 60	11
60 to 80	4
80 to 100	2
100 to 120	1