Weather Records on 21 September 1921

64 weather records were set or tied worldwide on 21 September 1921. Highest significance: Hohenpeissenberg, DE.

Key Facts for 21 September 1921

On 21 September 1921, 64 weather records were set or tied at long-record stations worldwide.
23 were record highs and 20 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 64 daily.
Hohenpeissenberg set a daily record precipitation of 50.4 mm (2.0 in) on 21 September 1921.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 454 records.

Record Map

64 stations

64 station records on 21 September 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hohenpeissenberg	Germany	Record daily precipitation	50.4 mm (2.0 in)	51 of 100 (Notable)
Greensboro Lock 7	United States	Record daily precipitation	39.1 mm (1.5 in)	34 of 100 (Routine)
Davis Island Dam	United States	Record daily precipitation	41.9 mm (1.6 in)	32 of 100 (Routine)
Lock #4	United States	Record daily precipitation	28.4 mm (1.1 in)	32 of 100 (Routine)
Morgantown 1	United States	Record daily precipitation	35.1 mm (1.4 in)	29 of 100 (Routine)
Beatrice	Canada	Record daily precipitation	25.4 mm (1.0 in)	26 of 100 (Routine)
Sfax El-Maou	Tunisia	Record high maximum temperature	36.0 C (96.8 F)	24 of 100 (Routine)
Durham	United Kingdom	Record high maximum temperature	22.2 C (72.0 F)	21 of 100 (Routine)
Sheringa (Lake Hamilton)	Australia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Stonecliffe	Canada	Record low minimum temperature	-5.6 C (21.9 F)	20 of 100 (Routine)
Hambantota	Sri Lanka	Record high minimum temperature	25.2 C (77.4 F)	19 of 100 (Routine)
Johnsonville	United States	Record daily precipitation	58.9 mm (2.3 in)	19 of 100 (Routine)
Tuttlingen	Germany	Record daily precipitation	16.4 mm (0.6 in)	17 of 100 (Routine)
Sheffield	United Kingdom	Record high maximum temperature	22.2 C (72.0 F)	17 of 100 (Routine)
Falmouth	United States	Record daily precipitation	17.8 mm (0.7 in)	17 of 100 (Routine)
State College	United States	Record daily precipitation	40.4 mm (1.6 in)	17 of 100 (Routine)
Coulta	Australia	Record daily precipitation	7.6 mm (0.30 in)	16 of 100 (Routine)
Chatham	Canada	Record low minimum temperature	0.0 C (32.0 F)	16 of 100 (Routine)
Halifax	Canada	Record low minimum temperature	0.6 C (33.1 F)	16 of 100 (Routine)
Uman	Ukraine	Record low minimum temperature	-3.4 C (25.9 F)	16 of 100 (Routine)
Point Pleasant	United States	Record daily precipitation	21.1 mm (0.8 in)	16 of 100 (Routine)
Algiers-Ville/Universite	Algeria	Record high minimum temperature	27.0 C (80.6 F)	15 of 100 (Routine)
White River	Canada	Record daily precipitation	41.1 mm (1.6 in)	15 of 100 (Routine)
St John's	Canada	Record low maximum temperature	7.8 C (46.0 F)	15 of 100 (Routine)
Kristianstad	Sweden	Record low minimum temperature	0.0 C (32.0 F)	15 of 100 (Routine)
Cet Central England	United Kingdom	Record high maximum temperature	21.5 C (70.7 F)	15 of 100 (Routine)
Lyndoch	Australia	Record daily precipitation	14.2 mm (0.6 in)	14 of 100 (Routine)
Astrakan	Russia	Record low minimum temperature	2.0 C (35.6 F)	14 of 100 (Routine)
Gainesville UNIV of Fl	United States	Record high maximum temperature	35.0 C (95.0 F)	14 of 100 (Routine)
Constantine	Algeria	Record high maximum temperature	36.0 C (96.8 F)	13 of 100 (Routine)
Chatham 2	Canada	Record daily precipitation	7.9 mm (0.31 in)	13 of 100 (Routine)
Cape Willoughby	Australia	Record daily precipitation	12.2 mm (0.5 in)	12 of 100 (Routine)
Kirov	Russia	Record low minimum temperature	-3.6 C (25.5 F)	12 of 100 (Routine)
Malvern	United States	Record high minimum temperature	23.9 C (75.0 F)	12 of 100 (Routine)
Plymouth	United States	Record low maximum temperature	11.1 C (52.0 F)	12 of 100 (Routine)
Fort National	Algeria	Record high minimum temperature	24.0 C (75.2 F)	11 of 100 (Routine)
Mahackala	Russia	Record low minimum temperature	6.5 C (43.7 F)	11 of 100 (Routine)
Tunis	Tunisia	Record high maximum temperature	39.0 C (102.2 F)	11 of 100 (Routine)
Pine Bluff	United States	Record high minimum temperature	22.8 C (73.0 F)	11 of 100 (Routine)
Tampa	United States	Record high maximum temperature	33.9 C (93.0 F)	11 of 100 (Routine)
Somerville 4 NW	United States	Record daily precipitation	36.1 mm (1.4 in)	11 of 100 (Routine)
Plauen	Germany	Record high maximum temperature	22.8 C (73.0 F)	10 of 100 (Routine)
Pointe Au Pere	Canada	Record low minimum temperature	-2.2 C (28.0 F)	9 of 100 (Routine)
Ekaterinburg	Russia	Record low maximum temperature	3.8 C (38.8 F)	9 of 100 (Routine)
Wanalta	Australia	Record daily precipitation	3.6 mm (0.14 in)	8 of 100 (Routine)
Wien	Austria	Record low minimum temperature	4.4 C (39.9 F)	7 of 100 (Routine)
Fredericton Unb	Canada	Record low minimum temperature	-2.2 C (28.0 F)	7 of 100 (Routine)
Syktyvkar	Russia	Record low minimum temperature	-2.2 C (28.0 F)	6 of 100 (Routine)
Camden 1	United States	Record high minimum temperature	23.3 C (73.9 F)	6 of 100 (Routine)
Mt Carmel	United States	Record daily precipitation	11.4 mm (0.4 in)	6 of 100 (Routine)
Batesville	United States	Record high minimum temperature	22.8 C (73.0 F)	6 of 100 (Routine)
Gardiner	United States	Record low minimum temperature	1.1 C (34.0 F)	5 of 100 (Routine)
Clarion 3 SW	United States	Record daily precipitation	13.7 mm (0.5 in)	5 of 100 (Routine)
Louisville	United States	Record high minimum temperature	22.8 C (73.0 F)	4 of 100 (Routine)
Saint John	Canada	Record low minimum temperature	3.3 C (37.9 F)	3 of 100 (Routine)
Hohenpeissenberg	Germany	Record high maximum temperature	20.3 C (68.5 F)	3 of 100 (Routine)
Oxford	United Kingdom	Record high maximum temperature	21.8 C (71.2 F)	3 of 100 (Routine)
Jacksonville Wb City	United States	Record high minimum temperature	24.4 C (75.9 F)	3 of 100 (Routine)
Nemours (Ghazaouet)	Algeria	Record low maximum temperature	24.0 C (75.2 F)	2 of 100 (Routine)
Kirchdorf/Poel	Germany	Record high maximum temperature	22.0 C (71.6 F)	2 of 100 (Routine)

Counts by Type and Timescale

64 records

Records set or tied on 21 September 1921 by type: Highest daily maximum 13, Lowest daily maximum 5, Highest daily minimum 10, Lowest daily minimum 15, Heaviest daily rainfall 21.

Records on 21 September 1921 by type
Record type	Records
Highest daily maximum	13
Lowest daily maximum	5
Highest daily minimum	10
Lowest daily minimum	15
Heaviest daily rainfall	21
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1921 by timescale: all-time 0, monthly 0, daily 64.

How Much Records Were Beaten By

54 broken records

Margins by which the 54 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 32.8. Ties are not counted.

Top 20 by Significance

21 September 1921

Top 20 records on 21 September 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1921	Hohenpeissenberg, DE	daily rain	50.4 mm (2.0 in)	19.9 mm (0.8 in)	60 years	51 of 100 (Notable)
21 September 1921	Greensboro Lock 7, US	daily rain	39.1 mm (1.5 in)	26.4 mm (1.0 in)	21 years	34 of 100 (Routine)
21 September 1921	Davis Island Dam, US	daily rain	41.9 mm (1.6 in)	32.8 mm (1.3 in)	8 years	32 of 100 (Routine)
21 September 1921	Lock #4, US	daily rain	28.4 mm (1.1 in)	21.8 mm (0.9 in)	21 years	32 of 100 (Routine)
21 September 1921	Morgantown 1, US	daily rain	35.1 mm (1.4 in)	13.5 mm (0.5 in)	38 years	29 of 100 (Routine)
21 September 1921	Beatrice, CA	daily rain	25.4 mm (1.0 in)	9.1 mm (0.36 in)	40 years	26 of 100 (Routine)
21 September 1921	Sfax El-Maou, TN	daily high max	36.0 C (96.8 F)	3.0 C (5.4 F)	34 years	24 of 100 (Routine)
21 September 1921	Durham, GB	daily high max	22.2 C (72.0 F)	3.8 C (6.8 F)	20 years	21 of 100 (Routine)
21 September 1921	Sheringa (Lake Hamilton), AU	daily rain	13.7 mm (0.5 in)	4.3 mm (0.17 in)	20 years	20 of 100 (Routine)
21 September 1921	Stonecliffe, CA	daily low min	-5.6 C (21.9 F)	4.5 C (8.1 F)	23 years	20 of 100 (Routine)
21 September 1921	Hambantota, LK	daily high min	25.2 C (77.4 F)	0.1 C (0.2 F)	44 years	19 of 100 (Routine)
21 September 1921	Johnsonville, US	daily rain	58.9 mm (2.3 in)	22.6 mm (0.9 in)	6 years	19 of 100 (Routine)
21 September 1921	Tuttlingen, DE	daily rain	16.4 mm (0.6 in)	4.0 mm (0.16 in)	31 years	17 of 100 (Routine)
21 September 1921	Sheffield, GB	daily high max	22.2 C (72.0 F)	2.0 C (3.6 F)	25 years	17 of 100 (Routine)
21 September 1921	Falmouth, US	daily rain	17.8 mm (0.7 in)	8.9 mm (0.35 in)	20 years	17 of 100 (Routine)
21 September 1921	State College, US	daily rain	40.4 mm (1.6 in)	11.4 mm (0.4 in)	8 years	17 of 100 (Routine)
21 September 1921	Coulta, AU	daily rain	7.6 mm (0.30 in)	0.7 mm (0.03 in)	36 years	16 of 100 (Routine)
21 September 1921	Chatham, CA	daily low min	0.0 C (32.0 F)	1.1 C (2.0 F)	35 years	16 of 100 (Routine)
21 September 1921	Halifax, CA	daily low min	0.6 C (33.1 F)	0.5 C (0.9 F)	35 years	16 of 100 (Routine)
21 September 1921	Uman, UA	daily low min	-3.4 C (25.9 F)	3.5 C (6.3 F)	19 years	16 of 100 (Routine)

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 1921

Records set or tied on this calendar date in each year from 1805 to 1921. 1921 had 64 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 1921-09-21: 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 2026-10-16 (16 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 5	42
5 to 10	4
10 to 15	3
15 to 20	1
20 to 25	2
25 to 30	1
30 to 35	1