Weather Records on 6 September 1991

757 weather records were set or tied worldwide on 6 September 1991. Highest significance: Estancia 4N, US.

Key Facts for 6 September 1991

On 6 September 1991, 757 weather records were set or tied at long-record stations worldwide.
311 were record highs and 225 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 22 monthly and 732 daily.
Estancia 4N set a daily record precipitation of 33.8 mm (1.3 in) on 6 September 1991.
Across 164 earlier years (1794 to 2026) the same calendar date averaged 449 records.

Record Map

757 stations

757 station records on 6 September 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 6 September 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Estancia 4N	United States	Record daily precipitation	33.8 mm (1.3 in)	60 of 100 (Major)
Valmora	United States	Record daily precipitation	64.3 mm (2.5 in)	59 of 100 (Notable)
Suchixtlahuaca -Quiotep-	Mexico	Record daily precipitation	154.9 mm (6.1 in)	57 of 100 (Notable)
Nenastnaja	Russia	Record daily precipitation	55.9 mm (2.2 in)	57 of 100 (Notable)
Castle Dale	United States	Record daily precipitation	35.3 mm (1.4 in)	56 of 100 (Notable)
Bosque del Apache	United States	Record daily precipitation	43.4 mm (1.7 in)	55 of 100 (Notable)
Monticello 2E	United States	Record daily precipitation	46.2 mm (1.8 in)	55 of 100 (Notable)
Hailun	China	Record daily precipitation	56.5 mm (2.2 in)	54 of 100 (Notable)
Mansfield Hollow Lake	United States	Record daily precipitation	78.7 mm (3.1 in)	54 of 100 (Notable)
Santa Rosa	United States	Record daily precipitation	50.8 mm (2.0 in)	54 of 100 (Notable)
Green River Aviation	United States	Record daily precipitation	26.4 mm (1.0 in)	53 of 100 (Notable)
Cotonou	Benin	Record daily precipitation	71.9 mm (2.8 in)	52 of 100 (Notable)
Mombetsu	Japan	Record daily precipitation	75.9 mm (3.0 in)	52 of 100 (Notable)
Shanwei	China	Record daily precipitation	224.7 mm (8.8 in)	51 of 100 (Notable)
Rochester	United States	Record daily precipitation	58.7 mm (2.3 in)	50 of 100 (Notable)
Elephant Butte Dam	United States	Record daily precipitation	63.5 mm (2.5 in)	50 of 100 (Notable)
Progresso	United States	Record daily precipitation	46.2 mm (1.8 in)	49 of 100 (Notable)
Gorakhpur	India	Record daily precipitation	182.1 mm (7.2 in)	48 of 100 (Notable)
Mountainair	United States	Record daily precipitation	71.6 mm (2.8 in)	45 of 100 (Notable)
Boulder	United States	Record daily precipitation	41.9 mm (1.6 in)	45 of 100 (Notable)
Joskar-Ola	Russia	Record daily precipitation	28.0 mm (1.1 in)	44 of 100 (Notable)
Kommunar	Russia	Record daily precipitation	29.5 mm (1.2 in)	43 of 100 (Notable)
Rogersville 1 NE	United States	Record daily precipitation	48.3 mm (1.9 in)	43 of 100 (Notable)
Johvi	Estonia	Record daily precipitation	30.9 mm (1.2 in)	42 of 100 (Notable)
Middleboro	United States	Record daily precipitation	47.0 mm (1.9 in)	42 of 100 (Notable)
Yurecuaro	Mexico	Record daily precipitation	55.4 mm (2.2 in)	41 of 100 (Notable)
Porterville	United States	Record high minimum temperature	25.0 C (77.0 F)	41 of 100 (Notable)
Hernando	United States	Record daily precipitation	81.5 mm (3.2 in)	41 of 100 (Notable)
Ft Sumner 5 S	United States	Record daily precipitation	67.3 mm (2.6 in)	41 of 100 (Notable)
Riga	Latvia	Record daily precipitation	48.6 mm (1.9 in)	40 of 100 (Notable)
Rumoi	Japan	Record daily precipitation	114.0 mm (4.5 in)	39 of 100 (Notable)
Bingham 2 NE	United States	Record daily precipitation	51.1 mm (2.0 in)	39 of 100 (Notable)
Wolf Canyon	United States	Record daily precipitation	26.2 mm (1.0 in)	39 of 100 (Notable)
Lemon Cove	United States	Record high minimum temperature	22.8 C (73.0 F)	38 of 100 (Notable)
Ixtlahuaca (Smn)	Mexico	Record daily precipitation	40.9 mm (1.6 in)	37 of 100 (Notable)
Harnosand	Sweden	Record low maximum temperature	10.7 C (51.3 F)	37 of 100 (Notable)
Eagle Pass 3N	United States	Record daily precipitation	62.2 mm (2.4 in)	37 of 100 (Notable)
San Juan Chamula	Mexico	Record daily precipitation	72.9 mm (2.9 in)	36 of 100 (Notable)
Victoria Cp&L	United States	Record daily precipitation	41.9 mm (1.6 in)	36 of 100 (Notable)
Newcastle	United States	Record high minimum temperature	20.6 C (69.1 F)	36 of 100 (Notable)
Pericos	Mexico	Record daily precipitation	49.8 mm (2.0 in)	35 of 100 (Notable)
Oktyabr Skoye	Russia	Record daily precipitation	35.2 mm (1.4 in)	35 of 100 (Notable)
Velikie Luki	Russia	Record low maximum temperature	9.2 C (48.6 F)	35 of 100 (Notable)
Abbott 1 SE	United States	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Beechwood	United States	Record daily precipitation	47.8 mm (1.9 in)	34 of 100 (Routine)
Sektagli	Russia	Record daily precipitation	56.9 mm (2.2 in)	33 of 100 (Routine)
Caldwell	United States	Record high maximum temperature	36.7 C (98.1 F)	33 of 100 (Routine)
Carrizo Springs 3S	United States	Record daily precipitation	50.5 mm (2.0 in)	33 of 100 (Routine)
Milford	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
La Estanzuela (Eele)	Uruguay	Record daily precipitation	51.0 mm (2.0 in)	33 of 100 (Routine)
Quitupan	Mexico	Record high maximum temperature	35.6 C (96.1 F)	32 of 100 (Routine)
Tehuacan	Mexico	Record daily precipitation	68.8 mm (2.7 in)	32 of 100 (Routine)
Roswell Ind Air Pk	United States	Record daily precipitation	31.5 mm (1.2 in)	32 of 100 (Routine)
Huajintlan	Mexico	Record daily precipitation	74.9 mm (2.9 in)	31 of 100 (Routine)
Bell Ranch	United States	Record daily precipitation	41.7 mm (1.6 in)	31 of 100 (Routine)
Rienhardt Rch	United States	Record daily precipitation	32.8 mm (1.3 in)	31 of 100 (Routine)
Woonsocket	United States	Record daily precipitation	32.3 mm (1.3 in)	31 of 100 (Routine)
Marysvale	United States	Record low maximum temperature	19.4 C (66.9 F)	31 of 100 (Routine)
Monticello 2E	United States	Record high minimum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Novyj Tor'jal	Russia	Record daily precipitation	27.1 mm (1.1 in)	30 of 100 (Routine)

Counts by Type and Timescale

757 records

Records set or tied on 6 September 1991 by type: Highest daily maximum 112, Lowest daily maximum 154, Highest daily minimum 199, Lowest daily minimum 71, Heaviest daily rainfall 220, Deepest snow cover 1.

Records on 6 September 1991 by type
Record type	Records
Highest daily maximum	112
Lowest daily maximum	154
Highest daily minimum	199
Lowest daily minimum	71
Heaviest daily rainfall	220
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 6 September 1991 by timescale: all-time 3, monthly 22, daily 732.

How Much Records Were Beaten By

602 broken records

Margins by which the 602 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 150.2. Ties are not counted.

Top 20 by Significance

6 September 1991

Top 20 records on 6 September 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 September 1991	Estancia 4N, US	daily rain	33.8 mm (1.3 in)	23.4 mm (0.9 in)	73 years	60 of 100 (Major)
6 September 1991	Valmora, US	daily rain	64.3 mm (2.5 in)	41.4 mm (1.6 in)	53 years	59 of 100 (Notable)
6 September 1991	Suchixtlahuaca -Quiotep-, MX	monthly rain	154.9 mm (6.1 in)	92.9 mm (3.7 in)	15 years	57 of 100 (Notable)
6 September 1991	Nenastnaja, RU	daily rain	55.9 mm (2.2 in)	32.3 mm (1.3 in)	56 years	57 of 100 (Notable)
6 September 1991	Castle Dale, US	daily rain	35.3 mm (1.4 in)	23.6 mm (0.9 in)	28 years	56 of 100 (Notable)
6 September 1991	Bosque del Apache, US	daily rain	43.4 mm (1.7 in)	21.6 mm (0.9 in)	64 years	55 of 100 (Notable)
6 September 1991	Monticello 2E, US	daily rain	46.2 mm (1.8 in)	30.2 mm (1.2 in)	28 years	55 of 100 (Notable)
6 September 1991	Hailun, CN	daily rain	56.5 mm (2.2 in)	32.4 mm (1.3 in)	36 years	54 of 100 (Notable)
6 September 1991	Mansfield Hollow Lake, US	daily rain	78.7 mm (3.1 in)	66.8 mm (2.6 in)	36 years	54 of 100 (Notable)
6 September 1991	Santa Rosa, US	daily rain	50.8 mm (2.0 in)	30.7 mm (1.2 in)	65 years	54 of 100 (Notable)
6 September 1991	Green River Aviation, US	daily rain	26.4 mm (1.0 in)	22.1 mm (0.9 in)	30 years	53 of 100 (Notable)
6 September 1991	Cotonou, BJ	daily rain	71.9 mm (2.8 in)	49.2 mm (1.9 in)	40 years	52 of 100 (Notable)
6 September 1991	Mombetsu, JP	daily rain	75.9 mm (3.0 in)	49.2 mm (1.9 in)	32 years	52 of 100 (Notable)
6 September 1991	Shanwei, CN	daily rain	224.7 mm (8.8 in)	150.2 mm (5.9 in)	24 years	51 of 100 (Notable)
6 September 1991	Rochester, US	daily rain	58.7 mm (2.3 in)	51.6 mm (2.0 in)	28 years	50 of 100 (Notable)
6 September 1991	Elephant Butte Dam, US	daily rain	63.5 mm (2.5 in)	32.3 mm (1.3 in)	9 years	50 of 100 (Notable)
6 September 1991	Progresso, US	daily rain	46.2 mm (1.8 in)	37.8 mm (1.5 in)	10 years	49 of 100 (Notable)
6 September 1991	Gorakhpur, IN	daily rain	182.1 mm (7.2 in)	54.3 mm (2.1 in)	64 years	48 of 100 (Notable)
6 September 1991	Mountainair, US	daily rain	71.6 mm (2.8 in)	32.5 mm (1.3 in)	8 years	45 of 100 (Notable)
6 September 1991	Boulder, US	daily rain	41.9 mm (1.6 in)	36.3 mm (1.4 in)	9 years	45 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

1794 to 1991

Records set or tied on this calendar date in each year from 1794 to 1991. 1991 had 757 records.

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

Records on 09-06 in each year
Year	Records
1794	1
1802	1
1803	1
1812	1
1814	2
1833	1
1834	1
1841	1
1853	1
1854	1
1861	1
1865	2
1866	2
1867	1
1868	1
1869	2
1871	2
1872	2
1873	2
1876	1
1877	1
1880	1
1881	3
1883	2
1884	1
1885	1
1887	2
1888	1
1890	3
1891	1
1892	4
1893	2
1894	4
1895	4
1896	2
1897	4
1898	5
1899	5
1900	5
1901	2
1902	5
1903	5
1904	6
1905	14
1906	8
1907	14
1908	36
1909	13
1910	28
1911	20
1912	55
1913	21
1914	23
1915	14
1916	16
1917	23
1918	62
1919	106
1920	172
1921	67
1922	114
1923	153
1924	335
1925	290
1926	123
1927	137
1928	252
1929	359
1930	101
1931	324
1932	275
1933	368
1934	462
1935	341
1936	338
1937	237
1938	322
1939	447
1940	170
1941	276
1942	284
1943	831
1944	392
1945	537
1946	426
1947	895
1948	379
1949	525
1950	699
1951	263
1952	350
1953	396
1954	567
1955	493
1956	735
1957	311
1958	489
1959	405
1960	382
1961	317
1962	772
1963	419
1964	393
1965	722
1966	296
1967	878
1968	512
1969	737
1970	910
1971	436
1972	567
1973	866
1974	897
1975	426
1976	915
1977	467
1978	1,273
1979	892
1980	458
1981	542
1982	744
1983	1,965
1984	1,354
1985	1,371
1986	751
1987	735
1988	1,547
1989	544
1990	805
1991	757
1992	1,084
1993	856
1994	622
1995	1,220
1996	934
1997	1,389
1998	1,385
1999	1,048
2000	1,500
2001	631
2002	867
2003	718
2004	956
2005	601
2006	1,104
2007	1,246
2008	1,430
2009	735
2010	1,259
2011	1,684
2012	803
2013	886
2014	588
2015	692
2016	605
2017	838
2018	714
2019	797
2020	1,349
2021	407
2022	1,782
2023	905
2024	1,161
2025	894
2026	846

Download the Data

Data for records on 1991-09-06: 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	559
20 to 40	31
40 to 60	9
60 to 80	1
80 to 100	1
100 to 120	0
120 to 140	0
140 to 160	1