Weather Records on 21 September 1940

908 weather records were set or tied worldwide on 21 September 1940. Highest significance: Hatfield (Benilkie), AU.

Key Facts for 21 September 1940

On 21 September 1940, 908 weather records were set or tied at long-record stations worldwide.
289 were record highs and 14 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 896 daily.
Hatfield (Benilkie) set a daily record precipitation of 39.6 mm (1.6 in) on 21 September 1940.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 448 records.

Record Map

908 stations

908 station records on 21 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hatfield (Benilkie)	Australia	Record daily precipitation	39.6 mm (1.6 in)	64 of 100 (Major)
Yarrawonga Post Office	Australia	Record daily precipitation	38.1 mm (1.5 in)	62 of 100 (Major)
Boxwood	Australia	Record daily precipitation	48.5 mm (1.9 in)	61 of 100 (Major)
Lake Rowan (Bungeet)	Australia	Record daily precipitation	46.2 mm (1.8 in)	60 of 100 (Major)
Booligal (Belmont)	Australia	Record daily precipitation	35.6 mm (1.4 in)	59 of 100 (Notable)
Groongal (Groongal Station)	Australia	Record daily precipitation	39.6 mm (1.6 in)	57 of 100 (Notable)
Little River (Mount Rothwell)	Australia	Record daily precipitation	25.7 mm (1.0 in)	57 of 100 (Notable)
Paika	Australia	Record daily precipitation	28.7 mm (1.1 in)	55 of 100 (Notable)
Warrenbayne (Baddaginnie)	Australia	Record daily precipitation	47.8 mm (1.9 in)	55 of 100 (Notable)
Condobolin (Borambil Park)	Australia	Record daily precipitation	32.8 mm (1.3 in)	54 of 100 (Notable)
Cobram Post Office	Australia	Record daily precipitation	41.4 mm (1.6 in)	54 of 100 (Notable)
Durdidwarrah	Australia	Record daily precipitation	34.8 mm (1.4 in)	53 of 100 (Notable)
Benalla (Shadforth Street)	Australia	Record daily precipitation	44.5 mm (1.8 in)	52 of 100 (Notable)
Frankfurt/Main (Feldbergstr.)	Germany	Record daily precipitation	28.9 mm (1.1 in)	52 of 100 (Notable)
Dookie Agricultural College	Australia	Record daily precipitation	44.2 mm (1.7 in)	51 of 100 (Notable)
Violet Town	Australia	Record daily precipitation	42.7 mm (1.7 in)	51 of 100 (Notable)
Mandvi	India	Record daily precipitation	248.4 mm (9.8 in)	51 of 100 (Notable)
Ravensfield	Australia	Record daily precipitation	41.1 mm (1.6 in)	49 of 100 (Notable)
Goorambat	Australia	Record daily precipitation	45.7 mm (1.8 in)	49 of 100 (Notable)
Conargo Post Office	Australia	Record daily precipitation	29.2 mm (1.1 in)	48 of 100 (Notable)
Carrathool Motors	Australia	Record daily precipitation	28.7 mm (1.1 in)	48 of 100 (Notable)
Mount Wallace	Australia	Record daily precipitation	42.9 mm (1.7 in)	48 of 100 (Notable)
Mulwala Post Office	Australia	Record daily precipitation	41.9 mm (1.6 in)	47 of 100 (Notable)
Wunnamurra	Australia	Record daily precipitation	32.0 mm (1.3 in)	47 of 100 (Notable)
Bansda	India	Record daily precipitation	189.2 mm (7.4 in)	47 of 100 (Notable)
Tungamah	Australia	Record daily precipitation	46.5 mm (1.8 in)	46 of 100 (Notable)
Aachen	Germany	Record daily precipitation	26.8 mm (1.1 in)	46 of 100 (Notable)
Ranpur	India	Record daily precipitation	101.9 mm (4.0 in)	46 of 100 (Notable)
Hamirpur	India	Record daily precipitation	77.5 mm (3.1 in)	46 of 100 (Notable)
Cut Bank AP	United States	Record daily precipitation	38.9 mm (1.5 in)	46 of 100 (Notable)
Yeoval Post Office	Australia	Record daily precipitation	35.3 mm (1.4 in)	45 of 100 (Notable)
Booligal (Ulonga)	Australia	Record daily precipitation	29.7 mm (1.2 in)	45 of 100 (Notable)
Nandurbar	India	Record daily precipitation	119.4 mm (4.7 in)	44 of 100 (Notable)
Jerilderie (Pooginook)	Australia	Record daily precipitation	35.8 mm (1.4 in)	43 of 100 (Notable)
Eurugabah Station	Australia	Record daily precipitation	31.0 mm (1.2 in)	43 of 100 (Notable)
Berrigan Post Office	Australia	Record daily precipitation	26.2 mm (1.0 in)	42 of 100 (Notable)
Conargo (Hartwood)	Australia	Record daily precipitation	25.7 mm (1.0 in)	42 of 100 (Notable)
Hay (Corrong)	Australia	Record daily precipitation	29.2 mm (1.1 in)	42 of 100 (Notable)
Steam Plains 1	Australia	Record daily precipitation	29.0 mm (1.1 in)	42 of 100 (Notable)
Caniambo	Australia	Record daily precipitation	34.0 mm (1.3 in)	42 of 100 (Notable)
Trier-Zewen	Germany	Record daily precipitation	28.6 mm (1.1 in)	42 of 100 (Notable)
Merrywinbone (Oreel)	Australia	Record daily precipitation	32.0 mm (1.3 in)	41 of 100 (Notable)
Moulamein Post Office	Australia	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Anakie	Australia	Record daily precipitation	27.9 mm (1.1 in)	41 of 100 (Notable)
Chuda	India	Record daily precipitation	85.1 mm (3.4 in)	41 of 100 (Notable)
Hatfield (Clare)	Australia	Record daily precipitation	34.0 mm (1.3 in)	40 of 100 (Notable)
Natue	Australia	Record daily precipitation	27.2 mm (1.1 in)	40 of 100 (Notable)
Devenish	Australia	Record daily precipitation	53.3 mm (2.1 in)	40 of 100 (Notable)
Bobadah (Avoca)	Australia	Record daily precipitation	38.6 mm (1.5 in)	39 of 100 (Notable)
Thelangerin East	Australia	Record daily precipitation	26.7 mm (1.1 in)	38 of 100 (Notable)
Wanganella (Zara)	Australia	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
Katandra North	Australia	Record daily precipitation	33.0 mm (1.3 in)	38 of 100 (Notable)
Geelong Sec	Australia	Record daily precipitation	25.1 mm (1.0 in)	38 of 100 (Notable)
Dhandhuka	India	Record daily precipitation	55.4 mm (2.2 in)	38 of 100 (Notable)
Bhaunagar	India	Record daily precipitation	128.3 mm (5.1 in)	38 of 100 (Notable)
Smithfield (Mun)	South Africa	Record daily precipitation	31.8 mm (1.3 in)	38 of 100 (Notable)
New Orleans Audubon	United States	Record daily precipitation	93.7 mm (3.7 in)	38 of 100 (Notable)
Gunbower	Australia	Record daily precipitation	28.4 mm (1.1 in)	37 of 100 (Notable)
Running Stream (Brooklyn)	Australia	Record daily precipitation	30.2 mm (1.2 in)	37 of 100 (Notable)
Emu Plains	Australia	Record daily precipitation	31.5 mm (1.2 in)	37 of 100 (Notable)

Counts by Type and Timescale

908 records

Records set or tied on 21 September 1940 by type: Highest daily maximum 173, Lowest daily maximum 8, Highest daily minimum 116, Lowest daily minimum 6, Heaviest daily rainfall 605.

Records on 21 September 1940 by type
Record type	Records
Highest daily maximum	173
Lowest daily maximum	8
Highest daily minimum	116
Lowest daily minimum	6
Heaviest daily rainfall	605
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1940 by timescale: all-time 0, monthly 12, daily 896.

How Much Records Were Beaten By

781 broken records

Margins by which the 781 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 195.6. Ties are not counted.

Top 20 by Significance

21 September 1940

Top 20 records on 21 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1940	Hatfield (Benilkie), AU	daily rain	39.6 mm (1.6 in)	37.1 mm (1.5 in)	62 years	64 of 100 (Major)
21 September 1940	Yarrawonga Post Office, AU	daily rain	38.1 mm (1.5 in)	26.4 mm (1.0 in)	53 years	62 of 100 (Major)
21 September 1940	Boxwood, AU	daily rain	48.5 mm (1.9 in)	32.2 mm (1.3 in)	55 years	61 of 100 (Major)
21 September 1940	Lake Rowan (Bungeet), AU	daily rain	46.2 mm (1.8 in)	34.3 mm (1.4 in)	51 years	60 of 100 (Major)
21 September 1940	Booligal (Belmont), AU	daily rain	35.6 mm (1.4 in)	27.0 mm (1.1 in)	48 years	59 of 100 (Notable)
21 September 1940	Groongal (Groongal Station), AU	daily rain	39.6 mm (1.6 in)	33.0 mm (1.3 in)	39 years	57 of 100 (Notable)
21 September 1940	Little River (Mount Rothwell), AU	daily rain	25.7 mm (1.0 in)	19.6 mm (0.8 in)	54 years	57 of 100 (Notable)
21 September 1940	Paika, AU	daily rain	28.7 mm (1.1 in)	21.3 mm (0.8 in)	51 years	55 of 100 (Notable)
21 September 1940	Warrenbayne (Baddaginnie), AU	daily rain	47.8 mm (1.9 in)	36.9 mm (1.5 in)	39 years	55 of 100 (Notable)
21 September 1940	Condobolin (Borambil Park), AU	daily rain	32.8 mm (1.3 in)	29.5 mm (1.2 in)	44 years	54 of 100 (Notable)
21 September 1940	Cobram Post Office, AU	daily rain	41.4 mm (1.6 in)	35.6 mm (1.4 in)	32 years	54 of 100 (Notable)
21 September 1940	Durdidwarrah, AU	daily rain	34.8 mm (1.4 in)	19.6 mm (0.8 in)	65 years	53 of 100 (Notable)
21 September 1940	Benalla (Shadforth Street), AU	daily rain	44.5 mm (1.8 in)	22.1 mm (0.9 in)	53 years	52 of 100 (Notable)
21 September 1940	Frankfurt/Main (Feldbergstr.), DE	daily rain	28.9 mm (1.1 in)	15.0 mm (0.6 in)	57 years	52 of 100 (Notable)
21 September 1940	Dookie Agricultural College, AU	daily rain	44.2 mm (1.7 in)	22.1 mm (0.9 in)	42 years	51 of 100 (Notable)
21 September 1940	Violet Town, AU	daily rain	42.7 mm (1.7 in)	22.4 mm (0.9 in)	54 years	51 of 100 (Notable)
21 September 1940	Mandvi, IN	daily rain	248.4 mm (9.8 in)	195.6 mm (7.7 in)	24 years	51 of 100 (Notable)
21 September 1940	Ravensfield, AU	daily rain	41.1 mm (1.6 in)	35.5 mm (1.4 in)	16 years	49 of 100 (Notable)
21 September 1940	Goorambat, AU	daily rain	45.7 mm (1.8 in)	36.8 mm (1.4 in)	16 years	49 of 100 (Notable)
21 September 1940	Conargo Post Office, AU	daily rain	29.2 mm (1.1 in)	21.1 mm (0.8 in)	32 years	48 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 1940

Records set or tied on this calendar date in each year from 1805 to 1940. 1940 had 908 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	588
2026	469

Download the Data

Data for records on 1940-09-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 25	726
25 to 50	45
50 to 75	7
75 to 100	2
100 to 125	0
125 to 150	0
150 to 175	0
175 to 200	1