Weather Records on 21 September 1991

1,021 weather records were set or tied worldwide on 21 September 1991. Highest significance: Pecos, US.

Key Facts for 21 September 1991

On 21 September 1991, 1,021 weather records were set or tied at long-record stations worldwide.
130 were record highs and 730 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 23 monthly and 998 daily.
Pecos set a daily record low maximum temperature of 10.0 C (50.0 F) on 21 September 1991.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 447 records.

Record Map

1,021 stations

1,021 station records on 21 September 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pecos	United States	Record low maximum temperature	10.0 C (50.0 F)	55 of 100 (Notable)
Punchbowl Crater 709	United States	Record daily precipitation	33.5 mm (1.3 in)	53 of 100 (Notable)
Burnet	United States	Record low maximum temperature	17.2 C (63.0 F)	49 of 100 (Notable)
Wilhelmina Rise 721	United States	Record daily precipitation	40.6 mm (1.6 in)	49 of 100 (Notable)
Molina de Aragon	Spain	Record daily precipitation	50.5 mm (2.0 in)	48 of 100 (Notable)
Spur	United States	Record low maximum temperature	12.8 C (55.0 F)	48 of 100 (Notable)
Dilley	United States	Record low maximum temperature	17.2 C (63.0 F)	46 of 100 (Notable)
Dublin 2SE	United States	Record low maximum temperature	15.6 C (60.1 F)	45 of 100 (Notable)
Ojinaga (Smn)	Mexico	Record low maximum temperature	16.7 C (62.1 F)	44 of 100 (Notable)
White Sands Natl Mon	United States	Record low maximum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
Mena	United States	Record low maximum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Ozark	United States	Record low maximum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Descanso Rs	United States	Record daily precipitation	46.0 mm (1.8 in)	41 of 100 (Notable)
Osceola	United States	Record low minimum temperature	0.0 C (32.0 F)	41 of 100 (Notable)
Luling	United States	Record low maximum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Cape Otway Lighthouse	Australia	Record daily precipitation	28.4 mm (1.1 in)	40 of 100 (Notable)
Carbonita	Brazil	Record daily precipitation	58.8 mm (2.3 in)	40 of 100 (Notable)
Vila Terra Branca-Jusante	Brazil	Record daily precipitation	50.2 mm (2.0 in)	40 of 100 (Notable)
Port Isabel	United States	Record low maximum temperature	18.9 C (66.0 F)	40 of 100 (Notable)
Manoa 712.1	United States	Record daily precipitation	33.5 mm (1.3 in)	40 of 100 (Notable)
Eagle Pass 3N	United States	Record low maximum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Fordyce	United States	Record low maximum temperature	19.4 C (66.9 F)	38 of 100 (Notable)
Charles City	United States	Record low minimum temperature	0.0 C (32.0 F)	38 of 100 (Notable)
Russellville	United States	Record low maximum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Union City	United States	Record low maximum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Marathon	United States	Record low maximum temperature	20.6 C (69.1 F)	38 of 100 (Notable)
Sanderson	United States	Record low maximum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Van Horn	United States	Record low maximum temperature	9.4 C (48.9 F)	38 of 100 (Notable)
Tkvarcheli	Georgia	Record daily precipitation	67.5 mm (2.7 in)	37 of 100 (Notable)
Dixon Wwtp	United States	Record low minimum temperature	0.6 C (33.1 F)	37 of 100 (Notable)
Boerne	United States	Record low maximum temperature	17.2 C (63.0 F)	37 of 100 (Notable)
Feodosiia	Ukraine	Record daily precipitation	32.4 mm (1.3 in)	36 of 100 (Notable)
Morrilton	United States	Record low maximum temperature	19.4 C (66.9 F)	35 of 100 (Notable)
Grinnell 3 SW	United States	Record low minimum temperature	-2.8 C (27.0 F)	35 of 100 (Notable)
Brunswick	United States	Record low maximum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Balmorhea	United States	Record low maximum temperature	9.4 C (48.9 F)	35 of 100 (Notable)
Brady	United States	Record low maximum temperature	12.2 C (54.0 F)	35 of 100 (Notable)
Grandfalls 3SSE	United States	Record low maximum temperature	11.1 C (52.0 F)	35 of 100 (Notable)
Longwood	Australia	Record daily precipitation	32.2 mm (1.3 in)	34 of 100 (Routine)
Tuapse	Russia	Record daily precipitation	46.4 mm (1.8 in)	34 of 100 (Routine)
Marianna 2 S	United States	Record low maximum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Brunswick	United States	Record low minimum temperature	1.1 C (34.0 F)	34 of 100 (Routine)
Cando 1E	United States	Record daily precipitation	30.0 mm (1.2 in)	34 of 100 (Routine)
Summerville 4W	United States	Record low maximum temperature	20.6 C (69.1 F)	34 of 100 (Routine)
Blanco	United States	Record low maximum temperature	16.1 C (61.0 F)	34 of 100 (Routine)
Harlingen	United States	Record low maximum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Marshall	United States	Record low maximum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Dublin	United States	Record low maximum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Jacksonville 2E	United States	Record low minimum temperature	-0.6 C (30.9 F)	33 of 100 (Routine)
Cedar Rapids #1	United States	Record low minimum temperature	1.1 C (34.0 F)	33 of 100 (Routine)
Jefferson City Wtp	United States	Record low maximum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Elephant Butte Dam	United States	Record low maximum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Kinston 7 SE	United States	Record low maximum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Statesville 2 NNE	United States	Record low minimum temperature	1.1 C (34.0 F)	33 of 100 (Routine)
Conway	United States	Record low maximum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
McAllen	United States	Record low maximum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Santo Hipolito	Brazil	Record daily precipitation	60.0 mm (2.4 in)	32 of 100 (Routine)
Rinconada	Mexico	Record low maximum temperature	19.4 C (66.9 F)	32 of 100 (Routine)
El Raudal	Mexico	Record low maximum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
1 N McLeansboro	United States	Record low maximum temperature	16.1 C (61.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

1,021 records

Records set or tied on 21 September 1991 by type: Highest daily maximum 67, Lowest daily maximum 386, Highest daily minimum 63, Lowest daily minimum 344, Heaviest daily rainfall 159, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 21 September 1991 by type
Record type	Records
Highest daily maximum	67
Lowest daily maximum	386
Highest daily minimum	63
Lowest daily minimum	344
Heaviest daily rainfall	159
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 21 September 1991 by timescale: all-time 0, monthly 23, daily 998.

How Much Records Were Beaten By

743 broken records

Margins by which the 743 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 47.6. Ties are not counted.

Top 20 by Significance

21 September 1991

Top 20 records on 21 September 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1991	Pecos, US	daily low max	10.0 C (50.0 F)	12.8 C (23.0 F)	76 years	55 of 100 (Notable)
21 September 1991	Punchbowl Crater 709, US	daily rain	33.5 mm (1.3 in)	27.9 mm (1.1 in)	30 years	53 of 100 (Notable)
21 September 1991	Burnet, US	daily low max	17.2 C (63.0 F)	5.0 C (9.0 F)	93 years	49 of 100 (Notable)
21 September 1991	Wilhelmina Rise 721, US	daily rain	40.6 mm (1.6 in)	19.8 mm (0.8 in)	21 years	49 of 100 (Notable)
21 September 1991	Molina de Aragon, ES	daily rain	50.5 mm (2.0 in)	39.7 mm (1.6 in)	13 years	48 of 100 (Notable)
21 September 1991	Spur, US	daily low max	12.8 C (55.0 F)	8.3 C (14.9 F)	78 years	48 of 100 (Notable)
21 September 1991	Dilley, US	daily low max	17.2 C (63.0 F)	6.7 C (12.1 F)	72 years	46 of 100 (Notable)
21 September 1991	Dublin 2SE, US	daily low max	15.6 C (60.1 F)	7.2 C (13.0 F)	72 years	45 of 100 (Notable)
21 September 1991	Ojinaga (Smn), MX	daily low max	16.7 C (62.1 F)	8.3 C (14.9 F)	66 years	44 of 100 (Notable)
21 September 1991	White Sands Natl Mon, US	daily low max	17.8 C (64.0 F)	8.3 C (14.9 F)	49 years	43 of 100 (Notable)
21 September 1991	Mena, US	daily low max	16.7 C (62.1 F)	3.9 C (7.0 F)	77 years	42 of 100 (Notable)
21 September 1991	Ozark, US	daily low max	18.9 C (66.0 F)	2.2 C (4.0 F)	94 years	42 of 100 (Notable)
21 September 1991	Descanso Rs, US	monthly rain	46.0 mm (1.8 in)	10.9 mm (0.4 in)	28 years	41 of 100 (Notable)
21 September 1991	Osceola, US	daily low min	0.0 C (32.0 F)	3.3 C (5.9 F)	89 years	41 of 100 (Notable)
21 September 1991	Luling, US	daily low max	20.0 C (68.0 F)	3.3 C (5.9 F)	78 years	41 of 100 (Notable)
21 September 1991	Cape Otway Lighthouse, AU	daily rain	28.4 mm (1.1 in)	0.5 mm (0.02 in)	122 years	40 of 100 (Notable)
21 September 1991	Carbonita, BR	daily rain	58.8 mm (2.3 in)	47.6 mm (1.9 in)	8 years	40 of 100 (Notable)
21 September 1991	Vila Terra Branca-Jusante, BR	daily rain	50.2 mm (2.0 in)	34.0 mm (1.3 in)	38 years	40 of 100 (Notable)
21 September 1991	Port Isabel, US	monthly low max	18.9 C (66.0 F)	1.7 C (3.1 F)	54 years	40 of 100 (Notable)
21 September 1991	Manoa 712.1, US	daily rain	33.5 mm (1.3 in)	7.1 mm (0.28 in)	80 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

1805 to 1991

Records set or tied on this calendar date in each year from 1805 to 1991. 1991 had 1,021 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	591
2026	478

Download the Data

Data for records on 1991-09-21: 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 2026-10-15 (15 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	697
10 to 20	32
20 to 30	8
30 to 40	4
40 to 50	2