Weather Records on 27 September 1991

894 weather records were set or tied worldwide on 27 September 1991. Highest significance: Lady Grey (Pol), ZA.

Key Facts for 27 September 1991

On 27 September 1991, 894 weather records were set or tied at long-record stations worldwide.
247 were record highs and 447 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 42 monthly and 851 daily.
Lady Grey (Pol) set a daily record precipitation of 50.0 mm (2.0 in) on 27 September 1991.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 448 records.

Record Map

894 stations

894 station records on 27 September 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lady Grey (Pol)	South Africa	Record daily precipitation	50.0 mm (2.0 in)	53 of 100 (Notable)
Valentia Observatory	Ireland	Record daily precipitation	59.4 mm (2.3 in)	52 of 100 (Notable)
Nizhneangarsk	Russia	Record daily precipitation	26.3 mm (1.0 in)	51 of 100 (Notable)
Ulleungdo	Korea, South	Record daily precipitation	125.0 mm (4.9 in)	50 of 100 (Notable)
Pori Porin Lentoasema	Finland	Record daily precipitation	29.9 mm (1.2 in)	49 of 100 (Notable)
Siikajoki Revonlahti	Finland	Record daily precipitation	29.3 mm (1.2 in)	47 of 100 (Notable)
Paupong Station	Australia	Record daily precipitation	31.0 mm (1.2 in)	46 of 100 (Notable)
Kihnio Aitoneva	Finland	Record daily precipitation	28.0 mm (1.1 in)	46 of 100 (Notable)
Alajarvi Moksy-1	Finland	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Vaala Pelso	Finland	Record daily precipitation	32.4 mm (1.3 in)	45 of 100 (Notable)
Ft Myers Page Fld AP	United States	Record low minimum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Bocholt	Germany	Record daily precipitation	28.2 mm (1.1 in)	43 of 100 (Notable)
Tivjaku	Russia	Record daily precipitation	49.4 mm (1.9 in)	42 of 100 (Notable)
Alavus Autionmaki	Finland	Record daily precipitation	25.5 mm (1.0 in)	41 of 100 (Notable)
Pudasjarvi Kurenalus	Finland	Record daily precipitation	26.1 mm (1.0 in)	41 of 100 (Notable)
Carrollton Lock 1	United States	Record low minimum temperature	2.8 C (37.0 F)	41 of 100 (Notable)
Rauma Kuuskajaskari	Finland	Record daily precipitation	25.6 mm (1.0 in)	40 of 100 (Notable)
Kankaanpaa Niinisalo Puolustus	Finland	Record daily precipitation	27.6 mm (1.1 in)	40 of 100 (Notable)
Taivalkoski Kk	Finland	Record daily precipitation	27.9 mm (1.1 in)	40 of 100 (Notable)
Asosan	Japan	Record daily precipitation	126.0 mm (5.0 in)	40 of 100 (Notable)
Carangola	Brazil	Record daily precipitation	38.6 mm (1.5 in)	39 of 100 (Notable)
Glenwood 2WNW	United States	Record low minimum temperature	-2.2 C (28.0 F)	39 of 100 (Notable)
Shawano 2SSW	United States	Record low minimum temperature	-3.9 C (25.0 F)	39 of 100 (Notable)
Oulu Linnanmaa	Finland	Record daily precipitation	27.5 mm (1.1 in)	38 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record high minimum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Avon Park 2 W	United States	Record low minimum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Port Washington	United States	Record low minimum temperature	0.6 C (33.1 F)	38 of 100 (Notable)
Sparta	United States	Record low minimum temperature	-4.4 C (24.1 F)	38 of 100 (Notable)
Pogranichnyj	Russia	Record high minimum temperature	13.9 C (57.0 F)	37 of 100 (Notable)
Quitupan	Mexico	Record high maximum temperature	35.6 C (96.1 F)	36 of 100 (Notable)
Bellefontaine	United States	Record low minimum temperature	0.6 C (33.1 F)	36 of 100 (Notable)
Valley Head	United States	Record low minimum temperature	2.2 C (36.0 F)	35 of 100 (Notable)
Gila Bend 2SE	United States	Record high minimum temperature	27.8 C (82.0 F)	35 of 100 (Notable)
Prairie du Sac 2 N	United States	Record low minimum temperature	-2.8 C (27.0 F)	35 of 100 (Notable)
Cagliari	Italy	Record daily precipitation	28.6 mm (1.1 in)	34 of 100 (Routine)
Manitowoc	United States	Record low minimum temperature	-0.6 C (30.9 F)	34 of 100 (Routine)
Suomussalmi Kk	Finland	Record daily precipitation	25.2 mm (1.0 in)	33 of 100 (Routine)
Hita	Japan	Record daily precipitation	73.9 mm (2.9 in)	33 of 100 (Routine)
Vjazemskaja	Russia	Record daily precipitation	27.0 mm (1.1 in)	33 of 100 (Routine)
Gaylord	United States	Record low maximum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Cacahoatan	Mexico	Record daily precipitation	171.2 mm (6.7 in)	32 of 100 (Routine)
Bikin	Russia	Record daily precipitation	42.6 mm (1.7 in)	32 of 100 (Routine)
Blackburn	South Africa	Record daily precipitation	32.0 mm (1.3 in)	32 of 100 (Routine)
Quartzsite	United States	Record high minimum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Beaver Is	United States	Record low maximum temperature	8.3 C (46.9 F)	32 of 100 (Routine)
David City 4E	United States	Record low minimum temperature	-3.3 C (26.1 F)	32 of 100 (Routine)
Saltville 1N	United States	Record low minimum temperature	1.7 C (35.1 F)	32 of 100 (Routine)
Union 3 SSE	United States	Record low minimum temperature	-2.2 C (28.0 F)	32 of 100 (Routine)
Kewaunee	United States	Record low minimum temperature	-0.6 C (30.9 F)	32 of 100 (Routine)
Hitoyoshi	Japan	Record daily precipitation	80.0 mm (3.1 in)	31 of 100 (Routine)
Shelbyville 1 E	United States	Record low minimum temperature	-2.8 C (27.0 F)	31 of 100 (Routine)
Minocqua	United States	Record low minimum temperature	-6.1 C (21.0 F)	31 of 100 (Routine)
Ahtari Myllymaki	Finland	Record daily precipitation	40.6 mm (1.6 in)	30 of 100 (Routine)
Theunissen (Mun)	South Africa	Record daily precipitation	46.0 mm (1.8 in)	30 of 100 (Routine)
Lampang	Thailand	Record high minimum temperature	25.5 C (77.9 F)	30 of 100 (Routine)
Bowman Dam	United States	Record high maximum temperature	31.1 C (88.0 F)	30 of 100 (Routine)
Lebanon	United States	Record low minimum temperature	2.8 C (37.0 F)	30 of 100 (Routine)
Woodstock 2 NE	United States	Record low minimum temperature	0.0 C (32.0 F)	30 of 100 (Routine)
Conconully	United States	Record high minimum temperature	12.8 C (55.0 F)	30 of 100 (Routine)
Voru	Estonia	Record high minimum temperature	14.8 C (58.6 F)	29 of 100 (Routine)

Counts by Type and Timescale

894 records

Records set or tied on 27 September 1991 by type: Highest daily maximum 89, Lowest daily maximum 102, Highest daily minimum 158, Lowest daily minimum 345, Heaviest daily rainfall 198, Heaviest daily snowfall 2.

Records on 27 September 1991 by type
Record type	Records
Highest daily maximum	89
Lowest daily maximum	102
Highest daily minimum	158
Lowest daily minimum	345
Heaviest daily rainfall	198
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 27 September 1991 by timescale: all-time 1, monthly 42, daily 851.

How Much Records Were Beaten By

655 broken records

Margins by which the 655 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.5. Ties are not counted.

Top 20 by Significance

27 September 1991

Top 20 records on 27 September 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1991	Lady Grey (Pol), ZA	daily rain	50.0 mm (2.0 in)	22.6 mm (0.9 in)	72 years	53 of 100 (Notable)
27 September 1991	Valentia Observatory, IE	daily rain	59.4 mm (2.3 in)	36.1 mm (1.4 in)	24 years	52 of 100 (Notable)
27 September 1991	Nizhneangarsk, RU	daily rain	26.3 mm (1.0 in)	13.9 mm (0.5 in)	57 years	51 of 100 (Notable)
27 September 1991	Ulleungdo, KR	daily rain	125.0 mm (4.9 in)	81.0 mm (3.2 in)	44 years	50 of 100 (Notable)
27 September 1991	Pori Porin Lentoasema, FI	daily rain	29.9 mm (1.2 in)	21.8 mm (0.9 in)	21 years	49 of 100 (Notable)
27 September 1991	Siikajoki Revonlahti, FI	daily rain	29.3 mm (1.2 in)	15.2 mm (0.6 in)	21 years	47 of 100 (Notable)
27 September 1991	Paupong Station, AU	daily rain	31.0 mm (1.2 in)	11.9 mm (0.5 in)	74 years	46 of 100 (Notable)
27 September 1991	Kihnio Aitoneva, FI	daily rain	28.0 mm (1.1 in)	19.4 mm (0.8 in)	21 years	46 of 100 (Notable)
27 September 1991	Alajarvi Moksy-1, FI	daily rain	34.0 mm (1.3 in)	21.9 mm (0.9 in)	8 years	45 of 100 (Notable)
27 September 1991	Vaala Pelso, FI	daily rain	32.4 mm (1.3 in)	21.3 mm (0.8 in)	8 years	45 of 100 (Notable)
27 September 1991	Ft Myers Page Fld AP, US	daily low min	17.8 C (64.0 F)	1.6 C (2.9 F)	72 years	44 of 100 (Notable)
27 September 1991	Bocholt, DE	daily rain	28.2 mm (1.1 in)	14.1 mm (0.6 in)	46 years	43 of 100 (Notable)
27 September 1991	Tivjaku, RU	daily rain	49.4 mm (1.9 in)	25.0 mm (1.0 in)	25 years	42 of 100 (Notable)
27 September 1991	Alavus Autionmaki, FI	daily rain	25.5 mm (1.0 in)	17.4 mm (0.7 in)	8 years	41 of 100 (Notable)
27 September 1991	Pudasjarvi Kurenalus, FI	daily rain	26.1 mm (1.0 in)	15.7 mm (0.6 in)	21 years	41 of 100 (Notable)
27 September 1991	Carrollton Lock 1, US	daily low min	2.8 C (37.0 F)	1.6 C (2.9 F)	96 years	41 of 100 (Notable)
27 September 1991	Rauma Kuuskajaskari, FI	daily rain	25.6 mm (1.0 in)	15.2 mm (0.6 in)	16 years	40 of 100 (Notable)
27 September 1991	Kankaanpaa Niinisalo Puolustus, FI	daily rain	27.6 mm (1.1 in)	17.3 mm (0.7 in)	21 years	40 of 100 (Notable)
27 September 1991	Taivalkoski Kk, FI	daily rain	27.9 mm (1.1 in)	14.7 mm (0.6 in)	21 years	40 of 100 (Notable)
27 September 1991	Asosan, JP	daily rain	126.0 mm (5.0 in)	101.5 mm (4.0 in)	8 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

1799 to 1991

Records set or tied on this calendar date in each year from 1799 to 1991. 1991 had 894 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 1991-09-27: 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	637
20 to 40	12
40 to 60	3
60 to 80	1
80 to 100	1
100 to 120	1