Weather Records on 11 September 1991

843 weather records were set or tied worldwide on 11 September 1991. Highest significance: Wisconsin Dells Wwtp, US.

Key Facts for 11 September 1991

On 11 September 1991, 843 weather records were set or tied at long-record stations worldwide.
245 were record highs and 141 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 25 monthly and 815 daily.
Wisconsin Dells Wwtp set a daily record precipitation of 63.5 mm (2.5 in) on 11 September 1991.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 421 records.

Record Map

843 stations

843 station records on 11 September 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Wisconsin Dells Wwtp	United States	Record daily precipitation	63.5 mm (2.5 in)	63 of 100 (Major)
Villa Obregon	Mexico	Record daily precipitation	114.8 mm (4.5 in)	61 of 100 (Major)
Hardin	United States	Record daily precipitation	78.7 mm (3.1 in)	61 of 100 (Major)
West Wyalong (Tallimbalong)	Australia	Record daily precipitation	30.2 mm (1.2 in)	59 of 100 (Notable)
Basel Binningen	Switzerland	Record daily precipitation	51.6 mm (2.0 in)	57 of 100 (Notable)
Huntley Exp STN	United States	Record daily precipitation	39.9 mm (1.6 in)	57 of 100 (Notable)
Eielson Fld	United States	Record daily precipitation	28.4 mm (1.1 in)	56 of 100 (Notable)
Bigga (Woolbrook)	Australia	Record daily precipitation	36.6 mm (1.4 in)	55 of 100 (Notable)
Gooloogong Post Office	Australia	Record daily precipitation	28.8 mm (1.1 in)	55 of 100 (Notable)
Schopfheim-Eichen	Germany	Record daily precipitation	55.5 mm (2.2 in)	53 of 100 (Notable)
Lithgow (Newnes Forest Centre)	Australia	Record daily precipitation	43.4 mm (1.7 in)	49 of 100 (Notable)
Blayney Post Office	Australia	Record daily precipitation	41.4 mm (1.6 in)	46 of 100 (Notable)
Millthorpe (Inala)	Australia	Record daily precipitation	47.6 mm (1.9 in)	46 of 100 (Notable)
Hope	United States	Record daily precipitation	42.7 mm (1.7 in)	46 of 100 (Notable)
Ganmain Post Office	Australia	Record daily precipitation	27.0 mm (1.1 in)	45 of 100 (Notable)
Lajas Substn	Puerto Rico [United States]	Record high minimum temperature	28.9 C (84.0 F)	45 of 100 (Notable)
Bigga (Wyoming)	Australia	Record daily precipitation	39.6 mm (1.6 in)	44 of 100 (Notable)
Woolsthorpe	Australia	Record daily precipitation	25.0 mm (1.0 in)	44 of 100 (Notable)
Tenasco	Mexico	Record daily precipitation	89.9 mm (3.5 in)	44 of 100 (Notable)
Rockley Post Office	Australia	Record daily precipitation	39.6 mm (1.6 in)	43 of 100 (Notable)
Im. Poliny Osipenko	Russia	Record daily precipitation	31.4 mm (1.2 in)	43 of 100 (Notable)
Oberon (Holmwood)	Australia	Record daily precipitation	40.2 mm (1.6 in)	42 of 100 (Notable)
Barellan Post Office	Australia	Record daily precipitation	26.2 mm (1.0 in)	42 of 100 (Notable)
Weihenstephan-Durnast	Germany	Record daily precipitation	45.5 mm (1.8 in)	42 of 100 (Notable)
Norton 9SSE	United States	Record daily precipitation	54.6 mm (2.1 in)	42 of 100 (Notable)
Carlsbad	United States	Record daily precipitation	56.6 mm (2.2 in)	42 of 100 (Notable)
Espoey	France	Record daily precipitation	35.2 mm (1.4 in)	41 of 100 (Notable)
Burrumbuttock (Holyrood)	Australia	Record daily precipitation	40.0 mm (1.6 in)	40 of 100 (Notable)
Hornisgrinde	Germany	Record daily precipitation	70.3 mm (2.8 in)	40 of 100 (Notable)
Veselaja Gorka	Russia	Record daily precipitation	53.3 mm (2.1 in)	40 of 100 (Notable)
Rochester Ferry	United States	Record daily precipitation	71.1 mm (2.8 in)	40 of 100 (Notable)
Werris Creek Post Office	Australia	Record daily precipitation	25.0 mm (1.0 in)	39 of 100 (Notable)
Orange (Canobolas State Forest	Australia	Record daily precipitation	65.2 mm (2.6 in)	39 of 100 (Notable)
Orange (McLaughlin St)	Australia	Record daily precipitation	45.5 mm (1.8 in)	39 of 100 (Notable)
Zapotitlan de Mendez	Mexico	Record low minimum temperature	12.8 C (55.0 F)	39 of 100 (Notable)
Denman (Palace Street)	Australia	Record daily precipitation	27.2 mm (1.1 in)	38 of 100 (Notable)
Coolah (Binnia St)	Australia	Record daily precipitation	29.6 mm (1.2 in)	38 of 100 (Notable)
Rugby (Carovale)	Australia	Record daily precipitation	38.4 mm (1.5 in)	38 of 100 (Notable)
Indigo	Australia	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Bourges	France	Record daily precipitation	35.4 mm (1.4 in)	38 of 100 (Notable)
Rheinfelden	Germany	Record daily precipitation	36.3 mm (1.4 in)	38 of 100 (Notable)
Warren	United States	Record high minimum temperature	5.0 C (41.0 F)	38 of 100 (Notable)
Baraboo Wwtp	United States	Record daily precipitation	36.1 mm (1.4 in)	38 of 100 (Notable)
Alectown (Vanvilla)	Australia	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Erica	Australia	Record daily precipitation	31.0 mm (1.2 in)	37 of 100 (Notable)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	30.4 mm (1.2 in)	37 of 100 (Notable)
Crooked Corner (Wingadeena)	Australia	Record daily precipitation	34.2 mm (1.3 in)	36 of 100 (Notable)
Wyangala Dam	Australia	Record daily precipitation	29.6 mm (1.2 in)	36 of 100 (Notable)
Toulouse-Blagnac	France	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Beaver Falls 1 NE	United States	Record daily precipitation	27.2 mm (1.1 in)	36 of 100 (Notable)
Willow Tree (Parraweena)	Australia	Record daily precipitation	34.0 mm (1.3 in)	35 of 100 (Notable)
Wombat (Tumbleton)	Australia	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Guadalupe Y Calvo (Smn)	Mexico	Record daily precipitation	43.2 mm (1.7 in)	35 of 100 (Notable)
Quartzsite	United States	Record low maximum temperature	33.9 C (93.0 F)	35 of 100 (Notable)
Northville	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Oconomowoc Wwtp	United States	Record daily precipitation	99.3 mm (3.9 in)	35 of 100 (Notable)
Black Springs Forestry	Australia	Record daily precipitation	55.4 mm (2.2 in)	34 of 100 (Routine)
Manildra (Hazeldale)	Australia	Record daily precipitation	33.0 mm (1.3 in)	34 of 100 (Routine)
Taylors Flat (Davislea)	Australia	Record daily precipitation	32.4 mm (1.3 in)	34 of 100 (Routine)
Ventersburg (Mag)	South Africa	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)

Counts by Type and Timescale

843 records

Records set or tied on 11 September 1991 by type: Highest daily maximum 53, Lowest daily maximum 70, Highest daily minimum 192, Lowest daily minimum 71, Heaviest daily rainfall 457.

Records on 11 September 1991 by type
Record type	Records
Highest daily maximum	53
Lowest daily maximum	70
Highest daily minimum	192
Lowest daily minimum	71
Heaviest daily rainfall	457
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 September 1991 by timescale: all-time 3, monthly 25, daily 815.

How Much Records Were Beaten By

682 broken records

Margins by which the 682 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 58.9. Ties are not counted.

Top 20 by Significance

11 September 1991

Top 20 records on 11 September 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 1991	Wisconsin Dells Wwtp, US	daily rain	63.5 mm (2.5 in)	45.2 mm (1.8 in)	66 years	63 of 100 (Major)
11 September 1991	Villa Obregon, MX	monthly rain	114.8 mm (4.5 in)	52.8 mm (2.1 in)	24 years	61 of 100 (Major)
11 September 1991	Hardin, US	monthly rain	78.7 mm (3.1 in)	34.2 mm (1.3 in)	24 years	61 of 100 (Major)
11 September 1991	West Wyalong (Tallimbalong), AU	daily rain	30.2 mm (1.2 in)	12.2 mm (0.5 in)	110 years	59 of 100 (Notable)
11 September 1991	Basel Binningen, CH	daily rain	51.6 mm (2.0 in)	18.6 mm (0.7 in)	73 years	57 of 100 (Notable)
11 September 1991	Huntley Exp STN, US	daily rain	39.9 mm (1.6 in)	23.9 mm (0.9 in)	60 years	57 of 100 (Notable)
11 September 1991	Eielson Fld, US	daily rain	28.4 mm (1.1 in)	20.5 mm (0.8 in)	40 years	56 of 100 (Notable)
11 September 1991	Bigga (Woolbrook), AU	daily rain	36.6 mm (1.4 in)	21.1 mm (0.8 in)	70 years	55 of 100 (Notable)
11 September 1991	Gooloogong Post Office, AU	daily rain	28.8 mm (1.1 in)	13.6 mm (0.5 in)	86 years	55 of 100 (Notable)
11 September 1991	Schopfheim-Eichen, DE	daily rain	55.5 mm (2.2 in)	36.6 mm (1.4 in)	33 years	53 of 100 (Notable)
11 September 1991	Lithgow (Newnes Forest Centre), AU	daily rain	43.4 mm (1.7 in)	26.1 mm (1.0 in)	37 years	49 of 100 (Notable)
11 September 1991	Blayney Post Office, AU	daily rain	41.4 mm (1.6 in)	13.0 mm (0.5 in)	66 years	46 of 100 (Notable)
11 September 1991	Millthorpe (Inala), AU	daily rain	47.6 mm (1.9 in)	13.3 mm (0.5 in)	66 years	46 of 100 (Notable)
11 September 1991	Hope, US	daily rain	42.7 mm (1.7 in)	30.0 mm (1.2 in)	64 years	46 of 100 (Notable)
11 September 1991	Ganmain Post Office, AU	daily rain	27.0 mm (1.1 in)	9.7 mm (0.38 in)	76 years	45 of 100 (Notable)
11 September 1991	Lajas Substn, PR	all-time high min	28.9 C (84.0 F)	2.2 C (4.0 F)	1 year	45 of 100 (Notable)
11 September 1991	Bigga (Wyoming), AU	daily rain	39.6 mm (1.6 in)	25.4 mm (1.0 in)	26 years	44 of 100 (Notable)
11 September 1991	Woolsthorpe, AU	daily rain	25.0 mm (1.0 in)	9.8 mm (0.39 in)	52 years	44 of 100 (Notable)
11 September 1991	Tenasco, MX	all-time rain	89.9 mm (3.5 in)	17.0 mm (0.7 in)	12 years	44 of 100 (Notable)
11 September 1991	Rockley Post Office, AU	daily rain	39.6 mm (1.6 in)	22.7 mm (0.9 in)	5 years	43 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

1809 to 1991

Records set or tied on this calendar date in each year from 1809 to 1991. 1991 had 843 records.

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

Records on 09-11 in each year
Year	Records
1809	1
1814	3
1818	1
1830	1
1836	1
1838	3
1839	1
1848	1
1850	1
1851	1
1854	2
1858	1
1860	2
1861	1
1863	2
1865	3
1866	1
1874	2
1876	1
1877	1
1879	1
1880	1
1882	4
1883	2
1884	1
1886	1
1888	2
1889	4
1890	2
1891	2
1892	1
1893	4
1894	2
1895	4
1896	1
1897	3
1898	3
1899	5
1900	1
1901	3
1902	15
1903	13
1904	4
1905	5
1906	10
1907	9
1908	20
1909	12
1910	19
1911	9
1912	25
1913	22
1914	52
1915	160
1916	17
1917	88
1918	62
1919	52
1920	158
1921	52
1922	78
1923	44
1924	290
1925	260
1926	137
1927	300
1928	127
1929	206
1930	136
1931	868
1932	210
1933	276
1934	144
1935	410
1936	567
1937	324
1938	288
1939	561
1940	891
1941	210
1942	234
1943	335
1944	446
1945	341
1946	262
1947	611
1948	424
1949	450
1950	462
1951	247
1952	549
1953	392
1954	363
1955	479
1956	539
1957	470
1958	748
1959	488
1960	423
1961	524
1962	480
1963	359
1964	1,195
1965	414
1966	392
1967	478
1968	835
1969	685
1970	474
1971	464
1972	507
1973	612
1974	430
1975	644
1976	920
1977	406
1978	911
1979	596
1980	474
1981	347
1982	862
1983	1,243
1984	888
1985	844
1986	1,221
1987	595
1988	1,019
1989	1,301
1990	840
1991	843
1992	672
1993	809
1994	713
1995	619
1996	1,030
1997	808
1998	1,821
1999	1,073
2000	1,469
2001	826
2002	1,059
2003	1,022
2004	740
2005	1,163
2006	1,132
2007	947
2008	916
2009	774
2010	965
2011	1,051
2012	687
2013	1,207
2014	1,100
2015	683
2016	677
2017	916
2018	763
2019	806
2020	1,235
2021	851
2022	617
2023	1,034
2024	889
2025	917
2026	615

Download the Data

Data for records on 1991-09-11: 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).