Weather Records on 21 September 2021

465 weather records were set or tied worldwide on 21 September 2021. Highest significance: Brule Rs, US.

Key Facts for 21 September 2021

On 21 September 2021, 465 weather records were set or tied at long-record stations worldwide.
244 were record highs and 112 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 455 daily.
Brule Rs set a daily record precipitation of 83.6 mm (3.3 in) on 21 September 2021.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 451 records.

Record Map

465 stations

465 station records on 21 September 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Brule Rs	United States	Record daily precipitation	83.6 mm (3.3 in)	70 of 100 (Major)
Goychay	Azerbaijan	Record daily precipitation	99.1 mm (3.9 in)	60 of 100 (Major)
Osceola	United States	Record daily precipitation	61.2 mm (2.4 in)	51 of 100 (Notable)
Augusta	United States	Record daily precipitation	66.5 mm (2.6 in)	50 of 100 (Notable)
Fujin	China	Record daily precipitation	46.5 mm (1.8 in)	49 of 100 (Notable)
Allerton	United States	Record daily precipitation	43.4 mm (1.7 in)	49 of 100 (Notable)
Goongerah	Australia	Record daily precipitation	41.8 mm (1.6 in)	47 of 100 (Notable)
Qian Gorlos	China	Record daily precipitation	36.3 mm (1.4 in)	47 of 100 (Notable)
Fern Ridge-Veneta	United States	Record daily precipitation	34.5 mm (1.4 in)	47 of 100 (Notable)
Tongliao	China	Record daily precipitation	41.4 mm (1.6 in)	46 of 100 (Notable)
Menorca/Mao	Spain	Record daily precipitation	74.8 mm (2.9 in)	46 of 100 (Notable)
Eagle	United States	Record daily snowfall	10.2 cm (4.0 in)	46 of 100 (Notable)
Townsville Aero	Australia	Record high maximum temperature	35.0 C (95.0 F)	45 of 100 (Notable)
Circle Hot Springs	United States	Record daily snowfall	7.6 cm (3.0 in)	44 of 100 (Notable)
Gravette	United States	Record daily precipitation	56.9 mm (2.2 in)	41 of 100 (Notable)
Elberton 2 N	United States	Record high minimum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Milaca	United States	Record high maximum temperature	30.6 C (87.1 F)	41 of 100 (Notable)
Vilnius	Lithuania	Record low maximum temperature	6.8 C (44.2 F)	40 of 100 (Notable)
Visby_Flygplats	Sweden	Record low minimum temperature	-1.1 C (30.0 F)	40 of 100 (Notable)
Newberry-Luce Co Rd Commission	United States	Record high maximum temperature	27.2 C (81.0 F)	40 of 100 (Notable)
Port Huron	United States	Record daily precipitation	48.3 mm (1.9 in)	40 of 100 (Notable)
Waynesboro	United States	Record high minimum temperature	22.2 C (72.0 F)	40 of 100 (Notable)
Spur	United States	Record high maximum temperature	38.9 C (102.0 F)	40 of 100 (Notable)
Tifton	United States	Record high minimum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Burlington 2S	United States	Record daily precipitation	55.9 mm (2.2 in)	39 of 100 (Notable)
Wiseman	United States	Record low maximum temperature	-2.8 C (27.0 F)	39 of 100 (Notable)
E Jordan	United States	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Sirte	Libya	Record high minimum temperature	28.0 C (82.4 F)	37 of 100 (Notable)
Hawkinsville	United States	Record daily precipitation	38.1 mm (1.5 in)	36 of 100 (Notable)
Sandersville	United States	Record daily precipitation	67.6 mm (2.7 in)	35 of 100 (Notable)
Haskell	United States	Record high maximum temperature	40.0 C (104.0 F)	35 of 100 (Notable)
Noojee Forestry	Australia	Record daily precipitation	33.2 mm (1.3 in)	34 of 100 (Routine)
Bikin	Russia	Record daily precipitation	41.9 mm (1.6 in)	34 of 100 (Routine)
Derby Aero	Australia	Record high minimum temperature	29.0 C (84.2 F)	33 of 100 (Routine)
Cumming 2N	United States	Record daily precipitation	95.5 mm (3.8 in)	33 of 100 (Routine)
Carrizo Springs 3S	United States	Record high maximum temperature	40.0 C (104.0 F)	33 of 100 (Routine)
Snyder	United States	Record high maximum temperature	40.0 C (104.0 F)	33 of 100 (Routine)
Wilmington Intl AP	United States	Record daily precipitation	96.3 mm (3.8 in)	33 of 100 (Routine)
Onslow Airport	Australia	Record high maximum temperature	37.8 C (100.0 F)	32 of 100 (Routine)
Kota Kinabalu Intl	Malaysia	Record daily precipitation	119.6 mm (4.7 in)	32 of 100 (Routine)
Detroit Metro AP	United States	Record daily precipitation	40.9 mm (1.6 in)	31 of 100 (Routine)
Darwin Airport	Australia	Record high maximum temperature	38.0 C (100.4 F)	30 of 100 (Routine)
Bachu	China	Record high maximum temperature	33.9 C (93.0 F)	30 of 100 (Routine)
Dandong	China	Record daily precipitation	51.8 mm (2.0 in)	30 of 100 (Routine)
Punta Arenas	Chile	Record high minimum temperature	10.4 C (50.7 F)	30 of 100 (Routine)
Sikasso	Mali	Record high minimum temperature	24.4 C (75.9 F)	30 of 100 (Routine)
Ica	Russia	Record low maximum temperature	7.5 C (45.5 F)	30 of 100 (Routine)
Shelbyville Dam	United States	Record daily precipitation	25.7 mm (1.0 in)	30 of 100 (Routine)
Noojee (Slivar)	Australia	Record daily precipitation	29.2 mm (1.1 in)	29 of 100 (Routine)
Yangjiang	China	Record high maximum temperature	35.2 C (95.4 F)	29 of 100 (Routine)
Ternej	Russia	Record daily precipitation	59.9 mm (2.4 in)	29 of 100 (Routine)
Kanchanaburi	Thailand	Record low minimum temperature	21.7 C (71.1 F)	29 of 100 (Routine)
Plains SW Ga Exp STN	United States	Record daily precipitation	40.1 mm (1.6 in)	29 of 100 (Routine)
Arlington	United States	Record daily precipitation	40.1 mm (1.6 in)	29 of 100 (Routine)
Bloomer	United States	Record daily precipitation	43.9 mm (1.7 in)	29 of 100 (Routine)
Dunkirk Chautauqua Co AP	United States	Record high minimum temperature	20.0 C (68.0 F)	29 of 100 (Routine)
Ust-Njukzha	Russia	Record high maximum temperature	22.7 C (72.9 F)	28 of 100 (Routine)
Troickoe	Russia	Record high minimum temperature	11.7 C (53.1 F)	28 of 100 (Routine)
Poset	Russia	Record high minimum temperature	18.9 C (66.0 F)	28 of 100 (Routine)
Wynne	United States	Record high minimum temperature	23.9 C (75.0 F)	28 of 100 (Routine)

Counts by Type and Timescale

465 records

Records set or tied on 21 September 2021 by type: Highest daily maximum 133, Lowest daily maximum 70, Highest daily minimum 111, Lowest daily minimum 42, Heaviest daily rainfall 105, Heaviest daily snowfall 3, Deepest snow cover 1.

Records on 21 September 2021 by type
Record type	Records
Highest daily maximum	133
Lowest daily maximum	70
Highest daily minimum	111
Lowest daily minimum	42
Heaviest daily rainfall	105
Heaviest daily snowfall	3
Deepest snow cover	1

Records on 21 September 2021 by timescale: all-time 0, monthly 10, daily 455.

How Much Records Were Beaten By

372 broken records

Margins by which the 372 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 86.1. Ties are not counted.

Top 20 by Significance

21 September 2021

Top 20 records on 21 September 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 2021	Brule Rs, US	daily rain	83.6 mm (3.3 in)	64.8 mm (2.6 in)	70 years	70 of 100 (Major)
21 September 2021	Goychay, AZ	daily rain	99.1 mm (3.9 in)	86.1 mm (3.4 in)	40 years	60 of 100 (Major)
21 September 2021	Osceola, US	daily rain	61.2 mm (2.4 in)	20.1 mm (0.8 in)	126 years	51 of 100 (Notable)
21 September 2021	Augusta, US	daily rain	66.5 mm (2.6 in)	37.3 mm (1.5 in)	64 years	50 of 100 (Notable)
21 September 2021	Fujin, CN	daily rain	46.5 mm (1.8 in)	29.5 mm (1.2 in)	27 years	49 of 100 (Notable)
21 September 2021	Allerton, US	daily rain	43.4 mm (1.7 in)	15.5 mm (0.6 in)	102 years	49 of 100 (Notable)
21 September 2021	Goongerah, AU	daily rain	41.8 mm (1.6 in)	27.8 mm (1.1 in)	27 years	47 of 100 (Notable)
21 September 2021	Qian Gorlos, CN	daily rain	36.3 mm (1.4 in)	24.1 mm (0.9 in)	48 years	47 of 100 (Notable)
21 September 2021	Fern Ridge-Veneta, US	daily rain	34.5 mm (1.4 in)	11.6 mm (0.5 in)	76 years	47 of 100 (Notable)
21 September 2021	Tongliao, CN	daily rain	41.4 mm (1.6 in)	18.1 mm (0.7 in)	48 years	46 of 100 (Notable)
21 September 2021	Menorca/Mao, ES	daily rain	74.8 mm (2.9 in)	36.6 mm (1.4 in)	44 years	46 of 100 (Notable)
21 September 2021	Eagle, US	daily snowfall	10.2 cm (4.0 in)	2.6 cm (1.0 in)	112 years	46 of 100 (Notable)
21 September 2021	Townsville Aero, AU	daily high max	35.0 C (95.0 F)	2.5 C (4.5 F)	75 years	45 of 100 (Notable)
21 September 2021	Circle Hot Springs, US	daily snowfall	7.6 cm (3.0 in)	5.6 cm (2.2 in)	72 years	44 of 100 (Notable)
21 September 2021	Gravette, US	daily rain	56.9 mm (2.2 in)	3.6 mm (0.14 in)	102 years	41 of 100 (Notable)
21 September 2021	Elberton 2 N, US	daily high min	21.7 C (71.1 F)	0.6 C (1.1 F)	125 years	41 of 100 (Notable)
21 September 2021	Milaca, US	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	100 years	41 of 100 (Notable)
21 September 2021	Vilnius, LT	daily low max	6.8 C (44.2 F)	0.2 C (0.4 F)	119 years	40 of 100 (Notable)
21 September 2021	Visby_Flygplats, SE	daily low min	-1.1 C (30.0 F)	0.1 C (0.2 F)	119 years	40 of 100 (Notable)
21 September 2021	Newberry-Luce Co Rd Commission, US	daily high max	27.2 C (81.0 F)	0.5 C (0.9 F)	107 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 2021

Records set or tied on this calendar date in each year from 1805 to 2021. 2021 had 465 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 2021-09-21: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	352
20 to 40	15
40 to 60	2
60 to 80	2
80 to 100	1