Weather Records on 28 September 2021

740 weather records were set or tied worldwide on 28 September 2021. Highest significance: Chuxiong, CN.

Key Facts for 28 September 2021

On 28 September 2021, 740 weather records were set or tied at long-record stations worldwide.
512 were record highs and 84 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 733 daily.
Chuxiong set a daily record precipitation of 80.0 mm (3.1 in) on 28 September 2021.
Across 162 earlier years (1794 to 2026) the same calendar date averaged 426 records.

Record Map

740 stations

740 station records on 28 September 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 28 September 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chuxiong	China	Record daily precipitation	80.0 mm (3.1 in)	62 of 100 (Major)
Karlshamn	Sweden	Record daily precipitation	31.4 mm (1.2 in)	60 of 100 (Major)
Zakatala	Azerbaijan	Record daily precipitation	99.1 mm (3.9 in)	57 of 100 (Notable)
Vamhus_D	Sweden	Record daily precipitation	36.4 mm (1.4 in)	49 of 100 (Notable)
Leesville	United States	Record daily precipitation	89.7 mm (3.5 in)	46 of 100 (Notable)
Tromso	Norway	Record high maximum temperature	18.2 C (64.8 F)	45 of 100 (Notable)
Degerfors	Sweden	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Moose Pass 3NW	United States	Record low maximum temperature	-1.7 C (28.9 F)	45 of 100 (Notable)
Hillsboro	United States	Record high minimum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Allerton	United States	Record high maximum temperature	31.1 C (88.0 F)	43 of 100 (Notable)
Glendive	United States	Record high maximum temperature	35.0 C (95.0 F)	43 of 100 (Notable)
Medicine Lake 3 SE	United States	Record high maximum temperature	33.9 C (93.0 F)	43 of 100 (Notable)
Steele 4N	United States	Record high maximum temperature	35.0 C (95.0 F)	43 of 100 (Notable)
Pollock	United States	Record high maximum temperature	33.9 C (93.0 F)	43 of 100 (Notable)
Lake Charles	United States	Record daily precipitation	89.2 mm (3.5 in)	43 of 100 (Notable)
Ekalaka	United States	Record high maximum temperature	35.6 C (96.1 F)	42 of 100 (Notable)
Rosalia	United States	Record high minimum temperature	12.8 C (55.0 F)	42 of 100 (Notable)
Mexico City	Mexico	Record daily precipitation	99.3 mm (3.9 in)	41 of 100 (Notable)
Vladivostok	Russia	Record high minimum temperature	17.0 C (62.6 F)	41 of 100 (Notable)
Artichoke Lake 1 E	United States	Record high maximum temperature	31.7 C (89.1 F)	41 of 100 (Notable)
Salem	United States	Record high maximum temperature	33.9 C (93.0 F)	41 of 100 (Notable)
Ainsworth	United States	Record high maximum temperature	33.9 C (93.0 F)	41 of 100 (Notable)
Aberdeen	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Sanborn	United States	Record high maximum temperature	30.6 C (87.1 F)	40 of 100 (Notable)
Gordon 6N	United States	Record high maximum temperature	32.8 C (91.0 F)	40 of 100 (Notable)
Highmore	United States	Record high minimum temperature	16.1 C (61.0 F)	40 of 100 (Notable)
Miller	United States	Record high maximum temperature	33.9 C (93.0 F)	40 of 100 (Notable)
Wessington Springs	United States	Record high maximum temperature	31.7 C (89.1 F)	40 of 100 (Notable)
Ibapah	United States	Record high maximum temperature	34.4 C (93.9 F)	40 of 100 (Notable)
Grand Forks UNIV (NWS)	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
Mc Clusky	United States	Record high maximum temperature	35.6 C (96.1 F)	38 of 100 (Notable)
Mobridge 2NNW	United States	Record high minimum temperature	17.2 C (63.0 F)	38 of 100 (Notable)
Winner	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Schulenburg	United States	Record daily precipitation	57.7 mm (2.3 in)	37 of 100 (Notable)
Lamoni	United States	Record high maximum temperature	33.3 C (91.9 F)	36 of 100 (Notable)
Detroit Dam	United States	Record daily precipitation	39.4 mm (1.6 in)	36 of 100 (Notable)
Sauda	Norway	Record high maximum temperature	20.7 C (69.3 F)	35 of 100 (Notable)
Torsvag Fyr	Norway	Record high maximum temperature	18.0 C (64.4 F)	35 of 100 (Notable)
Loup City	United States	Record high maximum temperature	32.8 C (91.0 F)	35 of 100 (Notable)
Crosby	United States	Record high maximum temperature	35.0 C (95.0 F)	35 of 100 (Notable)
New Salem 5NW	United States	Record high maximum temperature	33.3 C (91.9 F)	35 of 100 (Notable)
Dupree	United States	Record high maximum temperature	36.7 C (98.1 F)	35 of 100 (Notable)
Keppel Island South	Australia	Record daily precipitation	29.8 mm (1.2 in)	34 of 100 (Routine)
Ramgundam	India	Record daily precipitation	72.9 mm (2.9 in)	34 of 100 (Routine)
Black Rvr Pumps	United States	Record low maximum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Richardton Abbey	United States	Record high maximum temperature	34.4 C (93.9 F)	34 of 100 (Routine)
Bison	United States	Record high maximum temperature	35.0 C (95.0 F)	34 of 100 (Routine)
Camp Crook	United States	Record high maximum temperature	36.1 C (97.0 F)	34 of 100 (Routine)
Minot Intl AP	United States	Record high maximum temperature	35.6 C (96.1 F)	34 of 100 (Routine)
Sodankyla AWS	Finland	Record high maximum temperature	15.3 C (59.5 F)	33 of 100 (Routine)
Chuuk WSO AP	Federated States of Micronesia	Record high minimum temperature	26.7 C (80.1 F)	33 of 100 (Routine)
Tromso	Norway	Record high minimum temperature	9.4 C (48.9 F)	33 of 100 (Routine)
Vida 6 NE	United States	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Dunn Ctr 1E	United States	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Stanthorpe Leslie Parade	Australia	Record low maximum temperature	13.1 C (55.6 F)	32 of 100 (Routine)
Tromso - Langnes	Norway	Record high maximum temperature	17.9 C (64.2 F)	32 of 100 (Routine)
Kristianstad	Sweden	Record high minimum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
McKenzie Rvr Rs	United States	Record low maximum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Lingling	China	Record high maximum temperature	37.4 C (99.3 F)	31 of 100 (Routine)
Nanjing	China	Record high minimum temperature	23.9 C (75.0 F)	31 of 100 (Routine)

Counts by Type and Timescale

740 records

Records set or tied on 28 September 2021 by type: Highest daily maximum 331, Lowest daily maximum 57, Highest daily minimum 181, Lowest daily minimum 27, Heaviest daily rainfall 143, Deepest snow cover 1.

Records on 28 September 2021 by type
Record type	Records
Highest daily maximum	331
Lowest daily maximum	57
Highest daily minimum	181
Lowest daily minimum	27
Heaviest daily rainfall	143
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 28 September 2021 by timescale: all-time 0, monthly 7, daily 733.

How Much Records Were Beaten By

583 broken records

Margins by which the 583 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 62.4. Ties are not counted.

Top 20 by Significance

28 September 2021

Top 20 records on 28 September 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 September 2021	Chuxiong, CN	daily rain	80.0 mm (3.1 in)	52.2 mm (2.1 in)	52 years	62 of 100 (Major)
28 September 2021	Karlshamn, SE	daily rain	31.4 mm (1.2 in)	11.7 mm (0.5 in)	149 years	60 of 100 (Major)
28 September 2021	Zakatala, AZ	daily rain	99.1 mm (3.9 in)	62.4 mm (2.5 in)	66 years	57 of 100 (Notable)
28 September 2021	Vamhus_D, SE	daily rain	36.4 mm (1.4 in)	27.7 mm (1.1 in)	20 years	49 of 100 (Notable)
28 September 2021	Leesville, US	daily rain	89.7 mm (3.5 in)	42.2 mm (1.7 in)	48 years	46 of 100 (Notable)
28 September 2021	Tromso, NO	daily high max	18.2 C (64.8 F)	4.5 C (8.1 F)	80 years	45 of 100 (Notable)
28 September 2021	Degerfors, SE	daily rain	25.4 mm (1.0 in)	12.4 mm (0.5 in)	64 years	45 of 100 (Notable)
28 September 2021	Moose Pass 3NW, US	monthly low max	-1.7 C (28.9 F)	5.0 C (9.0 F)	38 years	45 of 100 (Notable)
28 September 2021	Hillsboro, US	daily high min	21.7 C (71.1 F)	1.7 C (3.1 F)	116 years	43 of 100 (Notable)
28 September 2021	Allerton, US	daily high max	31.1 C (88.0 F)	1.7 C (3.1 F)	116 years	43 of 100 (Notable)
28 September 2021	Glendive, US	daily high max	35.0 C (95.0 F)	2.2 C (4.0 F)	123 years	43 of 100 (Notable)
28 September 2021	Medicine Lake 3 SE, US	daily high max	33.9 C (93.0 F)	2.8 C (5.0 F)	99 years	43 of 100 (Notable)
28 September 2021	Steele 4N, US	daily high max	35.0 C (95.0 F)	2.2 C (4.0 F)	116 years	43 of 100 (Notable)
28 September 2021	Pollock, US	daily high max	33.9 C (93.0 F)	2.2 C (4.0 F)	112 years	43 of 100 (Notable)
28 September 2021	Lake Charles, US	daily rain	89.2 mm (3.5 in)	58.5 mm (2.3 in)	48 years	43 of 100 (Notable)
28 September 2021	Ekalaka, US	daily high max	35.6 C (96.1 F)	1.7 C (3.1 F)	116 years	42 of 100 (Notable)
28 September 2021	Rosalia, US	daily high min	12.8 C (55.0 F)	1.1 C (2.0 F)	103 years	42 of 100 (Notable)
28 September 2021	Mexico City, MX	monthly rain	99.3 mm (3.9 in)	30.7 mm (1.2 in)	6 years	41 of 100 (Notable)
28 September 2021	Vladivostok, RU	daily high min	17.0 C (62.6 F)	1.1 C (2.0 F)	94 years	41 of 100 (Notable)
28 September 2021	Artichoke Lake 1 E, US	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	99 years	41 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 2021

Records set or tied on this calendar date in each year from 1794 to 2021. 2021 had 740 records.

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

Records on 09-28 in each year
Year	Records
1794	1
1826	1
1832	1
1849	2
1851	1
1854	2
1855	2
1859	1
1862	1
1864	1
1866	1
1867	3
1868	1
1869	2
1873	3
1874	3
1877	3
1878	1
1879	1
1880	2
1881	3
1883	2
1884	1
1885	4
1887	1
1888	1
1890	4
1891	2
1892	3
1893	1
1894	6
1895	5
1896	3
1897	5
1898	4
1899	6
1900	9
1901	2
1902	5
1903	19
1904	17
1905	17
1906	37
1907	27
1908	23
1909	16
1910	39
1911	62
1912	32
1913	37
1914	28
1915	57
1916	61
1917	35
1918	55
1919	38
1920	23
1921	39
1922	34
1923	150
1924	139
1925	191
1926	305
1927	194
1928	205
1929	432
1930	116
1931	233
1932	195
1933	459
1934	237
1935	282
1936	502
1937	313
1938	311
1939	552
1940	419
1941	479
1942	1,187
1943	440
1944	367
1945	1,034
1946	347
1947	647
1948	617
1949	359
1950	233
1951	441
1952	366
1953	842
1954	512
1955	409
1956	590
1957	695
1958	509
1959	874
1960	226
1961	385
1962	705
1963	666
1964	723
1965	582
1966	477
1967	978
1968	262
1969	244
1970	932
1971	954
1972	671
1973	886
1974	583
1975	502
1976	900
1977	784
1978	513
1979	915
1980	750
1981	752
1982	1,001
1983	941
1984	1,326
1985	1,189
1986	1,264
1987	825
1988	623
1989	847
1990	414
1991	821
1992	643
1993	627
1994	836
1995	794
1996	1,069
1997	681
1998	1,541
1999	1,533
2000	652
2001	791
2002	743
2003	929
2004	852
2005	1,088
2006	704
2007	837
2008	536
2009	792
2010	1,139
2011	1,025
2012	624
2013	790
2014	878
2015	673
2016	520
2017	755
2018	527
2019	1,388
2020	531
2021	740
2022	727
2023	772
2024	1,364
2025	464
2026	531

Download the Data

Data for records on 2021-09-28: 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 10	554
10 to 20	15
20 to 30	8
30 to 40	1
40 to 50	1
50 to 60	3
60 to 70	1