Weather Records on 23 September 1940

374 weather records were set or tied worldwide on 23 September 1940. Highest significance: Moss Vale (Hoskins Street), AU.

Key Facts for 23 September 1940

On 23 September 1940, 374 weather records were set or tied at long-record stations worldwide.
135 were record highs and 10 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 370 daily.
Moss Vale (Hoskins Street) set a daily record precipitation of 56.4 mm (2.2 in) on 23 September 1940.
Across 169 earlier years (1793 to 2026) the same calendar date averaged 432 records.

Record Map

374 stations

374 station records on 23 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Moss Vale (Hoskins Street)	Australia	Record daily precipitation	56.4 mm (2.2 in)	64 of 100 (Major)
Hopetoun	Australia	Record daily precipitation	64.5 mm (2.5 in)	57 of 100 (Notable)
Cherrapunji/P.S.	India	Record daily precipitation	637.3 mm (25.1 in)	53 of 100 (Notable)
Bezeck	Russia	Record daily precipitation	25.6 mm (1.0 in)	51 of 100 (Notable)
Port Alfred	South Africa	Record daily precipitation	50.5 mm (2.0 in)	51 of 100 (Notable)
Bowral Post Office	Australia	Record daily precipitation	40.6 mm (1.6 in)	50 of 100 (Notable)
Upper Shillong	India	Record daily precipitation	140.0 mm (5.5 in)	49 of 100 (Notable)
Cootamundra Post Office	Australia	Record daily precipitation	36.1 mm (1.4 in)	48 of 100 (Notable)
Louisville	United States	Record daily precipitation	92.7 mm (3.6 in)	48 of 100 (Notable)
Peak Hill Post Office	Australia	Record daily precipitation	44.5 mm (1.8 in)	47 of 100 (Notable)
Yass (Linton Hostel)	Australia	Record daily precipitation	32.0 mm (1.3 in)	47 of 100 (Notable)
Binalong Post Office	Australia	Record daily precipitation	41.1 mm (1.6 in)	47 of 100 (Notable)
Dickinson Exp STN	United States	Record daily precipitation	37.6 mm (1.5 in)	43 of 100 (Notable)
Tumbarumba Post Office	Australia	Record daily precipitation	40.4 mm (1.6 in)	42 of 100 (Notable)
Molong (King St)	Australia	Record daily precipitation	41.4 mm (1.6 in)	41 of 100 (Notable)
Mundarlo (Yabtree)	Australia	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Alexandria	United States	Record daily precipitation	91.7 mm (3.6 in)	39 of 100 (Notable)
Adelong Post Office	Australia	Record daily precipitation	63.5 mm (2.5 in)	37 of 100 (Notable)
Soro	India	Record daily precipitation	130.8 mm (5.1 in)	36 of 100 (Notable)
Jagersfontein	South Africa	Record daily precipitation	33.5 mm (1.3 in)	36 of 100 (Notable)
Cudal Post Office	Australia	Record daily precipitation	39.4 mm (1.6 in)	35 of 100 (Notable)
Stockinbingal General Store	Australia	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Manoharpur	India	Record daily precipitation	139.7 mm (5.5 in)	35 of 100 (Notable)
Nevertire (Clyde St)	Australia	Record daily precipitation	31.0 mm (1.2 in)	34 of 100 (Routine)
Bungendore Post Office	Australia	Record daily precipitation	28.4 mm (1.1 in)	34 of 100 (Routine)
Koorawatha (Boorowa Street)	Australia	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Metten	Germany	Record daily precipitation	26.3 mm (1.0 in)	34 of 100 (Routine)
Ponnur(Ponnuru)	India	Record daily precipitation	74.9 mm (2.9 in)	34 of 100 (Routine)
Braidwood (Wallace Street)	Australia	Record daily precipitation	40.6 mm (1.6 in)	33 of 100 (Routine)
Curtis	United States	Record daily precipitation	42.4 mm (1.7 in)	32 of 100 (Routine)
Emmaville Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	31 of 100 (Routine)
Tarcutta Post Office	Australia	Record daily precipitation	26.4 mm (1.0 in)	31 of 100 (Routine)
New Salem 5NW	United States	Record daily precipitation	41.7 mm (1.6 in)	31 of 100 (Routine)
Grenfell (Quondong Rd)	Australia	Record daily precipitation	32.0 mm (1.3 in)	30 of 100 (Routine)
Cambridge	United States	Record daily precipitation	34.8 mm (1.4 in)	30 of 100 (Routine)
Hayes Center 1NW	United States	Record daily precipitation	31.0 mm (1.2 in)	30 of 100 (Routine)
Portland Rfc City	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Gowrie Junction	Australia	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Guyra Post Office	Australia	Record daily precipitation	31.5 mm (1.2 in)	28 of 100 (Routine)
Gundaroo (Bairnsdale)	Australia	Record daily precipitation	29.2 mm (1.1 in)	28 of 100 (Routine)
Victoria Gonzales Hts	Canada	Record high minimum temperature	15.0 C (59.0 F)	28 of 100 (Routine)
Leipzig-Holzhausen	Germany	Record high minimum temperature	14.0 C (57.2 F)	28 of 100 (Routine)
Dhenkanal	India	Record daily precipitation	77.7 mm (3.1 in)	28 of 100 (Routine)
Glen Innes Post Office	Australia	Record daily precipitation	26.2 mm (1.0 in)	27 of 100 (Routine)
Yorkton	Canada	Record high minimum temperature	15.0 C (59.0 F)	27 of 100 (Routine)
Ranaghat	India	Record daily precipitation	99.8 mm (3.9 in)	27 of 100 (Routine)
Bundanoon Bowling Club	Australia	Record daily precipitation	54.6 mm (2.1 in)	26 of 100 (Routine)
Robertson (Caalong Street)	Australia	Record daily precipitation	57.7 mm (2.3 in)	26 of 100 (Routine)
Milton Post Office	Australia	Record daily precipitation	50.0 mm (2.0 in)	26 of 100 (Routine)
Marsden (Merungle)	Australia	Record daily precipitation	29.5 mm (1.2 in)	26 of 100 (Routine)
Steveston	Canada	Record high maximum temperature	25.0 C (77.0 F)	26 of 100 (Routine)
Emsdale	Canada	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Jowai	India	Record daily precipitation	153.4 mm (6.0 in)	26 of 100 (Routine)
Azamgarh	India	Record daily precipitation	78.0 mm (3.1 in)	26 of 100 (Routine)
Nundle Post Office	Australia	Record daily precipitation	38.6 mm (1.5 in)	25 of 100 (Routine)
Rutherglen	Canada	Record daily precipitation	25.7 mm (1.0 in)	25 of 100 (Routine)
Shillong	India	Record daily precipitation	100.8 mm (4.0 in)	25 of 100 (Routine)
Mahul Pnulpur	India	Record daily precipitation	62.2 mm (2.4 in)	25 of 100 (Routine)
Contest	South Africa	Record daily precipitation	31.2 mm (1.2 in)	25 of 100 (Routine)
Covington 8 WNW	United States	Record daily precipitation	62.2 mm (2.4 in)	25 of 100 (Routine)

Counts by Type and Timescale

374 records

Records set or tied on 23 September 1940 by type: Highest daily maximum 38, Lowest daily maximum 3, Highest daily minimum 97, Lowest daily minimum 7, Heaviest daily rainfall 229.

Records on 23 September 1940 by type
Record type	Records
Highest daily maximum	38
Lowest daily maximum	3
Highest daily minimum	97
Lowest daily minimum	7
Heaviest daily rainfall	229
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 23 September 1940 by timescale: all-time 0, monthly 4, daily 370.

How Much Records Were Beaten By

314 broken records

Margins by which the 314 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 538.2. Ties are not counted.

Top 20 by Significance

23 September 1940

Top 20 records on 23 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 September 1940	Moss Vale (Hoskins Street), AU	daily rain	56.4 mm (2.2 in)	39.4 mm (1.6 in)	68 years	64 of 100 (Major)
23 September 1940	Hopetoun, AU	monthly rain	64.5 mm (2.5 in)	31.7 mm (1.2 in)	16 years	57 of 100 (Notable)
23 September 1940	Cherrapunji/P.S., IN	daily rain	637.3 mm (25.1 in)	538.2 mm (21.2 in)	30 years	53 of 100 (Notable)
23 September 1940	Bezeck, RU	daily rain	25.6 mm (1.0 in)	17.5 mm (0.7 in)	42 years	51 of 100 (Notable)
23 September 1940	Port Alfred, ZA	daily rain	50.5 mm (2.0 in)	39.3 mm (1.5 in)	43 years	51 of 100 (Notable)
23 September 1940	Bowral Post Office, AU	daily rain	40.6 mm (1.6 in)	31.5 mm (1.2 in)	42 years	50 of 100 (Notable)
23 September 1940	Upper Shillong, IN	daily rain	140.0 mm (5.5 in)	83.1 mm (3.3 in)	18 years	49 of 100 (Notable)
23 September 1940	Cootamundra Post Office, AU	daily rain	36.1 mm (1.4 in)	31.0 mm (1.2 in)	10 years	48 of 100 (Notable)
23 September 1940	Louisville, US	daily rain	92.7 mm (3.6 in)	68.8 mm (2.7 in)	26 years	48 of 100 (Notable)
23 September 1940	Peak Hill Post Office, AU	daily rain	44.5 mm (1.8 in)	36.1 mm (1.4 in)	8 years	47 of 100 (Notable)
23 September 1940	Yass (Linton Hostel), AU	daily rain	32.0 mm (1.3 in)	28.2 mm (1.1 in)	10 years	47 of 100 (Notable)
23 September 1940	Binalong Post Office, AU	daily rain	41.1 mm (1.6 in)	30.2 mm (1.2 in)	10 years	47 of 100 (Notable)
23 September 1940	Dickinson Exp STN, US	daily rain	37.6 mm (1.5 in)	18.8 mm (0.7 in)	40 years	43 of 100 (Notable)
23 September 1940	Tumbarumba Post Office, AU	daily rain	40.4 mm (1.6 in)	23.1 mm (0.9 in)	42 years	42 of 100 (Notable)
23 September 1940	Molong (King St), AU	daily rain	41.4 mm (1.6 in)	24.1 mm (0.9 in)	16 years	41 of 100 (Notable)
23 September 1940	Mundarlo (Yabtree), AU	daily rain	25.4 mm (1.0 in)	14.0 mm (0.6 in)	51 years	41 of 100 (Notable)
23 September 1940	Alexandria, US	daily rain	91.7 mm (3.6 in)	49.8 mm (2.0 in)	21 years	39 of 100 (Notable)
23 September 1940	Adelong Post Office, AU	monthly rain	63.5 mm (2.5 in)	12.7 mm (0.5 in)	19 years	37 of 100 (Notable)
23 September 1940	Soro, IN	daily rain	130.8 mm (5.1 in)	76.2 mm (3.0 in)	8 years	36 of 100 (Notable)
23 September 1940	Jagersfontein, ZA	daily rain	33.5 mm (1.3 in)	28.2 mm (1.1 in)	32 years	36 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

1793 to 1940

Records set or tied on this calendar date in each year from 1793 to 1940. 1940 had 374 records.

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

Records on 09-23 in each year
Year	Records
1793	1
1796	1
1799	1
1804	1
1832	1
1835	1
1838	1
1842	3
1843	1
1845	2
1848	1
1849	1
1850	1
1851	2
1854	3
1855	1
1859	2
1864	1
1865	1
1866	1
1868	1
1871	1
1872	1
1874	1
1875	1
1876	1
1877	1
1881	4
1882	2
1885	1
1886	1
1887	1
1888	1
1889	3
1890	2
1891	1
1892	2
1893	4
1895	9
1896	5
1897	1
1898	2
1899	4
1900	4
1901	2
1902	6
1903	7
1904	19
1905	6
1906	6
1907	19
1908	19
1909	15
1910	8
1911	11
1912	15
1913	22
1914	29
1915	25
1916	324
1917	56
1918	34
1919	40
1920	44
1921	47
1922	34
1923	74
1924	194
1925	223
1926	459
1927	247
1928	382
1929	198
1930	472
1931	600
1932	383
1933	281
1934	361
1935	239
1936	377
1937	557
1938	389
1939	279
1940	374
1941	490
1942	557
1943	322
1944	381
1945	652
1946	623
1947	803
1948	259
1949	496
1950	267
1951	462
1952	432
1953	271
1954	324
1955	852
1956	299
1957	539
1958	641
1959	307
1960	470
1961	670
1962	344
1963	568
1964	322
1965	783
1966	528
1967	341
1968	481
1969	450
1970	1,457
1971	578
1972	461
1973	674
1974	1,543
1975	1,038
1976	463
1977	616
1978	500
1979	586
1980	1,037
1981	717
1982	775
1983	1,744
1984	1,121
1985	924
1986	740
1987	1,077
1988	653
1989	1,376
1990	702
1991	519
1992	976
1993	983
1994	1,140
1995	1,868
1996	809
1997	1,060
1998	1,326
1999	1,207
2000	2,026
2001	790
2002	930
2003	1,243
2004	986
2005	1,207
2006	1,509
2007	1,153
2008	835
2009	1,201
2010	1,360
2011	666
2012	785
2013	573
2014	595
2015	587
2016	774
2017	1,371
2018	693
2019	565
2020	618
2021	602
2022	551
2023	812
2024	499
2025	449
2026	384

Download the Data

Data for records on 1940-09-23: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 100	313
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	1