Weather Records on 20 September 2021

565 weather records were set or tied worldwide on 20 September 2021. Highest significance: Baudette, US.

Key Facts for 20 September 2021

On 20 September 2021, 565 weather records were set or tied at long-record stations worldwide.
337 were record highs and 106 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 555 daily.
Baudette set a daily record precipitation of 56.4 mm (2.2 in) on 20 September 2021.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 441 records.

Record Map

565 stations

565 station records on 20 September 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Baudette	United States	Record daily precipitation	56.4 mm (2.2 in)	76 of 100 (Major)
Calcutta/Alipore	India	Record daily precipitation	142.0 mm (5.6 in)	74 of 100 (Major)
Eastman 1 W	United States	Record daily precipitation	120.4 mm (4.7 in)	70 of 100 (Major)
Columbia 3 WNW	United States	Record daily precipitation	127.0 mm (5.0 in)	65 of 100 (Major)
Chaoyang	China	Record daily precipitation	103.4 mm (4.1 in)	64 of 100 (Major)
Zhangwu	China	Record daily precipitation	90.9 mm (3.6 in)	60 of 100 (Major)
Kalac	Russia	Record daily precipitation	36.1 mm (1.4 in)	60 of 100 (Major)
Yingkou	China	Record daily precipitation	79.5 mm (3.1 in)	59 of 100 (Notable)
Jinzhou	China	Record daily precipitation	124.7 mm (4.9 in)	58 of 100 (Notable)
Savannah Intl AP	United States	Record daily precipitation	169.2 mm (6.7 in)	58 of 100 (Notable)
Chengde	China	Record daily precipitation	46.7 mm (1.8 in)	55 of 100 (Notable)
Beaufort MCAS	United States	Record daily precipitation	106.2 mm (4.2 in)	55 of 100 (Notable)
Leting	China	Record daily precipitation	80.5 mm (3.2 in)	53 of 100 (Notable)
Belle Mina 2 N	United States	Record daily precipitation	79.2 mm (3.1 in)	53 of 100 (Notable)
Tongliao	China	Record daily precipitation	45.0 mm (1.8 in)	52 of 100 (Notable)
Anna	Russia	Record daily precipitation	38.1 mm (1.5 in)	52 of 100 (Notable)
Waskish 4NE	United States	Record daily precipitation	76.5 mm (3.0 in)	50 of 100 (Notable)
J.G.H. van der Wath Airp	Namibia	Record daily precipitation	56.9 mm (2.2 in)	49 of 100 (Notable)
De Sabla	United States	Record high minimum temperature	22.2 C (72.0 F)	46 of 100 (Notable)
Ft Stewart	United States	Record daily precipitation	76.2 mm (3.0 in)	46 of 100 (Notable)
Grand Rapids Forestry Lab	United States	Record daily precipitation	78.7 mm (3.1 in)	45 of 100 (Notable)
Koloa Mauka 994	United States	Record daily precipitation	50.3 mm (2.0 in)	45 of 100 (Notable)
Siping	China	Record daily precipitation	53.1 mm (2.1 in)	44 of 100 (Notable)
Glen St Mary 1 W	United States	Record high minimum temperature	23.9 C (75.0 F)	43 of 100 (Notable)
Pine Rvr Dam	United States	Record high maximum temperature	31.1 C (88.0 F)	43 of 100 (Notable)
Tower 2S	United States	Record high minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Sirte	Libya	Record high minimum temperature	27.0 C (80.6 F)	42 of 100 (Notable)
Red Lake Indian Agcy	United States	Record daily precipitation	61.0 mm (2.4 in)	42 of 100 (Notable)
Hayward Rs	United States	Record high minimum temperature	21.1 C (70.0 F)	42 of 100 (Notable)
Falls Creek (Rocky Valley)	Australia	Record daily precipitation	117.8 mm (4.6 in)	41 of 100 (Notable)
Cornelia	United States	Record high minimum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Pratt 3NW	United States	Record high minimum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Frankfort 2NE	United States	Record high minimum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Walker	United States	Record high maximum temperature	30.6 C (87.1 F)	41 of 100 (Notable)
Linxi	China	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Ulan-Ude	Russia	Record high maximum temperature	25.1 C (77.2 F)	39 of 100 (Notable)
Madison Sewage Plt	United States	Record daily precipitation	62.7 mm (2.5 in)	39 of 100 (Notable)
St Joseph 3 N	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Elgin Water	United States	Record high maximum temperature	32.2 C (90.0 F)	38 of 100 (Notable)
Richfield	United States	Record high maximum temperature	37.2 C (99.0 F)	38 of 100 (Notable)
Intl Falls Intl AP	United States	Record daily precipitation	51.3 mm (2.0 in)	38 of 100 (Notable)
Melo	Uruguay	Record daily precipitation	69.6 mm (2.7 in)	38 of 100 (Notable)
Cambridge	United States	Record high maximum temperature	31.1 C (88.0 F)	37 of 100 (Notable)
Columbia	United States	Record high minimum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Caballo Dam	United States	Record high minimum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Cloquet	United States	Record high minimum temperature	19.4 C (66.9 F)	36 of 100 (Notable)
Darwin Airport	Australia	Record high maximum temperature	37.5 C (99.5 F)	35 of 100 (Notable)
Sultan Abdul Aziz Shah Intl	Malaysia	Record daily precipitation	88.9 mm (3.5 in)	35 of 100 (Notable)
Voronez	Russia	Record daily precipitation	37.1 mm (1.5 in)	35 of 100 (Notable)
Cambridge	United States	Record high minimum temperature	20.0 C (68.0 F)	35 of 100 (Notable)
Winnibigoshish Dam	United States	Record high maximum temperature	30.0 C (86.0 F)	35 of 100 (Notable)
Brule Rs	United States	Record high minimum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Del Rio Intl AP	United States	Record high maximum temperature	41.1 C (106.0 F)	35 of 100 (Notable)
Hastings Dam 2	United States	Record high maximum temperature	32.2 C (90.0 F)	34 of 100 (Routine)
Jordan 1SSW	United States	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Lynchburg	United States	Record daily precipitation	89.2 mm (3.5 in)	34 of 100 (Routine)
Brule Rs	United States	Record high maximum temperature	28.9 C (84.0 F)	34 of 100 (Routine)
Edi Upper	Australia	Record daily precipitation	42.2 mm (1.7 in)	33 of 100 (Routine)
Misurata	Libya	Record high maximum temperature	41.7 C (107.1 F)	33 of 100 (Routine)
Sirte	Libya	Record high maximum temperature	41.8 C (107.2 F)	33 of 100 (Routine)

Counts by Type and Timescale

565 records

Records set or tied on 20 September 2021 by type: Highest daily maximum 157, Lowest daily maximum 62, Highest daily minimum 180, Lowest daily minimum 44, Heaviest daily rainfall 119, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 20 September 2021 by type
Record type	Records
Highest daily maximum	157
Lowest daily maximum	62
Highest daily minimum	180
Lowest daily minimum	44
Heaviest daily rainfall	119
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 20 September 2021 by timescale: all-time 0, monthly 10, daily 555.

How Much Records Were Beaten By

417 broken records

Margins by which the 417 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 132.6. Ties are not counted.

Top 20 by Significance

20 September 2021

Top 20 records on 20 September 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 2021	Baudette, US	daily rain	56.4 mm (2.2 in)	32.5 mm (1.3 in)	112 years	76 of 100 (Major)
20 September 2021	Calcutta/Alipore, IN	daily rain	142.0 mm (5.6 in)	83.1 mm (3.3 in)	84 years	74 of 100 (Major)
20 September 2021	Eastman 1 W, US	daily rain	120.4 mm (4.7 in)	83.8 mm (3.3 in)	68 years	70 of 100 (Major)
20 September 2021	Columbia 3 WNW, US	daily rain	127.0 mm (5.0 in)	73.7 mm (2.9 in)	63 years	65 of 100 (Major)
20 September 2021	Chaoyang, CN	monthly rain	103.4 mm (4.1 in)	45.2 mm (1.8 in)	25 years	64 of 100 (Major)
20 September 2021	Zhangwu, CN	daily rain	90.9 mm (3.6 in)	56.5 mm (2.2 in)	46 years	60 of 100 (Major)
20 September 2021	Kalac, RU	daily rain	36.1 mm (1.4 in)	25.9 mm (1.0 in)	56 years	60 of 100 (Major)
20 September 2021	Yingkou, CN	daily rain	79.5 mm (3.1 in)	51.2 mm (2.0 in)	46 years	59 of 100 (Notable)
20 September 2021	Jinzhou, CN	monthly rain	124.7 mm (4.9 in)	27.4 mm (1.1 in)	65 years	58 of 100 (Notable)
20 September 2021	Savannah Intl AP, US	daily rain	169.2 mm (6.7 in)	132.6 mm (5.2 in)	39 years	58 of 100 (Notable)
20 September 2021	Chengde, CN	daily rain	46.7 mm (1.8 in)	28.4 mm (1.1 in)	48 years	55 of 100 (Notable)
20 September 2021	Beaufort MCAS, US	daily rain	106.2 mm (4.2 in)	96.0 mm (3.8 in)	28 years	55 of 100 (Notable)
20 September 2021	Leting, CN	daily rain	80.5 mm (3.2 in)	36.1 mm (1.4 in)	59 years	53 of 100 (Notable)
20 September 2021	Belle Mina 2 N, US	daily rain	79.2 mm (3.1 in)	49.7 mm (2.0 in)	52 years	53 of 100 (Notable)
20 September 2021	Tongliao, CN	daily rain	45.0 mm (1.8 in)	33.5 mm (1.3 in)	16 years	52 of 100 (Notable)
20 September 2021	Anna, RU	daily rain	38.1 mm (1.5 in)	17.3 mm (0.7 in)	68 years	52 of 100 (Notable)
20 September 2021	Waskish 4NE, US	daily rain	76.5 mm (3.0 in)	56.9 mm (2.2 in)	4 years	50 of 100 (Notable)
20 September 2021	J.G.H. van der Wath Airp, NA	monthly rain	56.9 mm (2.2 in)	24.9 mm (1.0 in)	29 years	49 of 100 (Notable)
20 September 2021	De Sabla, US	daily high min	22.2 C (72.0 F)	2.2 C (4.0 F)	115 years	46 of 100 (Notable)
20 September 2021	Ft Stewart, US	daily rain	76.2 mm (3.0 in)	54.4 mm (2.1 in)	23 years	46 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

1812 to 2021

Records set or tied on this calendar date in each year from 1812 to 2021. 2021 had 565 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 2021-09-20: 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	382
20 to 40	22
40 to 60	8
60 to 80	1
80 to 100	3
100 to 120	0
120 to 140	1