Weather Records on 24 September 1940

319 weather records were set or tied worldwide on 24 September 1940. Highest significance: Tasiilaq, GL.

Key Facts for 24 September 1940

On 24 September 1940, 319 weather records were set or tied at long-record stations worldwide.
86 were record highs and 17 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 318 daily.
Tasiilaq set a daily record precipitation of 79.0 mm (3.1 in) on 24 September 1940.
Across 166 earlier years (1803 to 2026) the same calendar date averaged 428 records.

Record Map

319 stations

319 station records on 24 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 24 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tasiilaq	Greenland [Denmark]	Record daily precipitation	79.0 mm (3.1 in)	54 of 100 (Notable)
Dresden	United States	Record daily precipitation	73.2 mm (2.9 in)	52 of 100 (Notable)
Woodville 4 ESE	United States	Record daily precipitation	69.9 mm (2.8 in)	51 of 100 (Notable)
Kharagpur	India	Record daily precipitation	121.9 mm (4.8 in)	49 of 100 (Notable)
Portsmouth-Sciotoville	United States	Record daily precipitation	68.3 mm (2.7 in)	49 of 100 (Notable)
Bronkhorstspruit (Mun)	South Africa	Record daily precipitation	39.9 mm (1.6 in)	48 of 100 (Notable)
Derby	South Africa	Record daily precipitation	72.6 mm (2.9 in)	45 of 100 (Notable)
Ogies (Pol)	South Africa	Record daily precipitation	43.7 mm (1.7 in)	43 of 100 (Notable)
Jennings	United States	Record daily precipitation	102.4 mm (4.0 in)	43 of 100 (Notable)
Owen Sound	Canada	Record daily precipitation	40.9 mm (1.6 in)	42 of 100 (Notable)
Mawphlang Obsy	India	Record daily precipitation	188.7 mm (7.4 in)	41 of 100 (Notable)
Kadayam	India	Record daily precipitation	46.5 mm (1.8 in)	41 of 100 (Notable)
Bakhtiarpur	India	Record daily precipitation	126.7 mm (5.0 in)	39 of 100 (Notable)
Devon (Pol)	South Africa	Record daily precipitation	28.2 mm (1.1 in)	39 of 100 (Notable)
Kriel (Pol)	South Africa	Record daily precipitation	46.5 mm (1.8 in)	39 of 100 (Notable)
Verwoedburg-Mu"Lytteltn"	South Africa	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Germiston-Fj Payne Park	South Africa	Record daily precipitation	28.2 mm (1.1 in)	37 of 100 (Notable)
Fredonia	United States	Record daily precipitation	46.2 mm (1.8 in)	37 of 100 (Notable)
Morgan City	United States	Record daily precipitation	102.9 mm (4.1 in)	36 of 100 (Notable)
St Joseph 3 N	United States	Record daily precipitation	46.5 mm (1.8 in)	36 of 100 (Notable)
Lares	Puerto Rico [United States]	Record low maximum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Amersfoort (Pol)	South Africa	Record daily precipitation	37.6 mm (1.5 in)	35 of 100 (Notable)
Springfield	United States	Record daily precipitation	48.3 mm (1.9 in)	35 of 100 (Notable)
Jhb-Joubert Park	South Africa	Record daily precipitation	26.9 mm (1.1 in)	34 of 100 (Routine)
Springs (Rwb)	South Africa	Record daily precipitation	26.9 mm (1.1 in)	34 of 100 (Routine)
Nacogdoches	United States	Record daily precipitation	59.2 mm (2.3 in)	34 of 100 (Routine)
Karina	South Africa	Record daily precipitation	35.3 mm (1.4 in)	32 of 100 (Routine)
Anna 4 N	United States	Record daily precipitation	45.7 mm (1.8 in)	31 of 100 (Routine)
Hoxie	United States	Record daily precipitation	41.9 mm (1.6 in)	31 of 100 (Routine)
Jhb-Braamfontein (Cem)	South Africa	Record daily precipitation	27.4 mm (1.1 in)	30 of 100 (Routine)
Melville	United States	Record daily precipitation	68.1 mm (2.7 in)	30 of 100 (Routine)
Steveston	Canada	Record high maximum temperature	26.1 C (79.0 F)	29 of 100 (Routine)
Kalchini	India	Record daily precipitation	175.0 mm (6.9 in)	29 of 100 (Routine)
El Dorado	United States	Record daily precipitation	46.2 mm (1.8 in)	29 of 100 (Routine)
Donaldsonville 4 SW	United States	Record daily precipitation	87.6 mm (3.4 in)	29 of 100 (Routine)
Sitka Magnetic Obsy	United States	Record high maximum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Wilgerivier (Sar)	South Africa	Record daily precipitation	35.6 mm (1.4 in)	28 of 100 (Routine)
Norwich	United States	Record daily precipitation	43.7 mm (1.7 in)	28 of 100 (Routine)
Lafayette Rgnl AP	United States	Record daily precipitation	52.3 mm (2.1 in)	28 of 100 (Routine)
Buxa	India	Record daily precipitation	222.3 mm (8.8 in)	27 of 100 (Routine)
Newton	United States	Record daily precipitation	48.3 mm (1.9 in)	27 of 100 (Routine)
Delmas (Pol)	South Africa	Record daily precipitation	27.2 mm (1.1 in)	26 of 100 (Routine)
Elandsfontein	South Africa	Record daily precipitation	34.3 mm (1.4 in)	26 of 100 (Routine)
Abbeville	United States	Record daily precipitation	39.4 mm (1.6 in)	26 of 100 (Routine)
Ft Bidwell	United States	Record high minimum temperature	11.1 C (52.0 F)	25 of 100 (Routine)
Nashua 2 NNW	United States	Record high minimum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Aravakurichi	India	Record daily precipitation	63.0 mm (2.5 in)	24 of 100 (Routine)
Hooghly	India	Record daily precipitation	89.2 mm (3.5 in)	24 of 100 (Routine)
Beatrice	United States	Record daily precipitation	38.4 mm (1.5 in)	24 of 100 (Routine)
Vlaklaagte	South Africa	Record daily precipitation	31.5 mm (1.2 in)	23 of 100 (Routine)
Donkerhoek (Skl)	South Africa	Record daily precipitation	28.7 mm (1.1 in)	23 of 100 (Routine)
Petoskey	United States	Record daily precipitation	33.0 mm (1.3 in)	23 of 100 (Routine)
Vickery 2 NW	United States	Record daily precipitation	47.8 mm (1.9 in)	23 of 100 (Routine)
Hogsback (Bos)	South Africa	Record daily precipitation	50.8 mm (2.0 in)	22 of 100 (Routine)
Cairo 3N	United States	Record daily precipitation	43.4 mm (1.7 in)	22 of 100 (Routine)
Hobart (Ellerslie Road)	Australia	Record high maximum temperature	22.2 C (72.0 F)	21 of 100 (Routine)
Kustanai	Kazakhstan	Record low minimum temperature	-5.9 C (21.4 F)	21 of 100 (Routine)
Ponce 4 E	Puerto Rico [United States]	Record daily precipitation	34.3 mm (1.4 in)	21 of 100 (Routine)
Pretoria-Fountains	South Africa	Record daily precipitation	27.4 mm (1.1 in)	21 of 100 (Routine)
Premier Mine-Cullinan	South Africa	Record daily precipitation	25.7 mm (1.0 in)	21 of 100 (Routine)

Counts by Type and Timescale

319 records

Records set or tied on 24 September 1940 by type: Highest daily maximum 32, Lowest daily maximum 6, Highest daily minimum 54, Lowest daily minimum 11, Heaviest daily rainfall 216.

Records on 24 September 1940 by type
Record type	Records
Highest daily maximum	32
Lowest daily maximum	6
Highest daily minimum	54
Lowest daily minimum	11
Heaviest daily rainfall	216
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 24 September 1940 by timescale: all-time 0, monthly 1, daily 318.

How Much Records Were Beaten By

276 broken records

Margins by which the 276 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 95.2. Ties are not counted.

Top 20 by Significance

24 September 1940

Top 20 records on 24 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 September 1940	Tasiilaq, GL	daily rain	79.0 mm (3.1 in)	39.8 mm (1.6 in)	41 years	54 of 100 (Notable)
24 September 1940	Dresden, US	daily rain	73.2 mm (2.9 in)	65.1 mm (2.6 in)	27 years	52 of 100 (Notable)
24 September 1940	Woodville 4 ESE, US	daily rain	69.9 mm (2.8 in)	60.8 mm (2.4 in)	26 years	51 of 100 (Notable)
24 September 1940	Kharagpur, IN	daily rain	121.9 mm (4.8 in)	91.4 mm (3.6 in)	18 years	49 of 100 (Notable)
24 September 1940	Portsmouth-Sciotoville, US	daily rain	68.3 mm (2.7 in)	40.4 mm (1.6 in)	26 years	49 of 100 (Notable)
24 September 1940	Bronkhorstspruit (Mun), ZA	daily rain	39.9 mm (1.6 in)	34.6 mm (1.4 in)	23 years	48 of 100 (Notable)
24 September 1940	Derby, ZA	monthly rain	72.6 mm (2.9 in)	28.1 mm (1.1 in)	19 years	45 of 100 (Notable)
24 September 1940	Ogies (Pol), ZA	daily rain	43.7 mm (1.7 in)	38.6 mm (1.5 in)	11 years	43 of 100 (Notable)
24 September 1940	Jennings, US	daily rain	102.4 mm (4.0 in)	74.5 mm (2.9 in)	10 years	43 of 100 (Notable)
24 September 1940	Owen Sound, CA	daily rain	40.9 mm (1.6 in)	17.8 mm (0.7 in)	58 years	42 of 100 (Notable)
24 September 1940	Mawphlang Obsy, IN	daily rain	188.7 mm (7.4 in)	95.2 mm (3.7 in)	18 years	41 of 100 (Notable)
24 September 1940	Kadayam, IN	daily rain	46.5 mm (1.8 in)	35.6 mm (1.4 in)	11 years	41 of 100 (Notable)
24 September 1940	Bakhtiarpur, IN	daily rain	126.7 mm (5.0 in)	88.6 mm (3.5 in)	23 years	39 of 100 (Notable)
24 September 1940	Devon (Pol), ZA	daily rain	28.2 mm (1.1 in)	25.4 mm (1.0 in)	32 years	39 of 100 (Notable)
24 September 1940	Kriel (Pol), ZA	daily rain	46.5 mm (1.8 in)	34.6 mm (1.4 in)	14 years	39 of 100 (Notable)
24 September 1940	Verwoedburg-Mu"Lytteltn", ZA	daily rain	25.4 mm (1.0 in)	20.6 mm (0.8 in)	32 years	39 of 100 (Notable)
24 September 1940	Germiston-Fj Payne Park, ZA	daily rain	28.2 mm (1.1 in)	22.1 mm (0.9 in)	32 years	37 of 100 (Notable)
24 September 1940	Fredonia, US	daily rain	46.2 mm (1.8 in)	36.3 mm (1.4 in)	38 years	37 of 100 (Notable)
24 September 1940	Morgan City, US	daily rain	102.9 mm (4.1 in)	50.1 mm (2.0 in)	10 years	36 of 100 (Notable)
24 September 1940	St Joseph 3 N, US	daily rain	46.5 mm (1.8 in)	38.4 mm (1.5 in)	10 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

1803 to 1940

Records set or tied on this calendar date in each year from 1803 to 1940. 1940 had 319 records.

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

Records on 09-24 in each year
Year	Records
1803	1
1835	1
1836	1
1842	1
1847	1
1852	2
1854	2
1857	2
1858	1
1859	1
1860	1
1863	1
1864	1
1865	1
1866	1
1867	2
1868	1
1870	3
1871	1
1872	1
1873	1
1874	2
1875	2
1876	1
1877	3
1878	2
1881	5
1884	1
1885	2
1887	1
1889	5
1890	1
1891	2
1892	5
1893	1
1894	2
1895	7
1896	2
1898	1
1899	4
1900	5
1901	3
1902	10
1903	8
1904	9
1905	7
1906	5
1907	20
1908	23
1909	31
1910	8
1911	11
1912	49
1913	9
1914	23
1915	159
1916	253
1917	87
1918	7
1919	26
1920	69
1921	23
1922	49
1923	70
1924	175
1925	146
1926	630
1927	194
1928	603
1929	137
1930	488
1931	463
1932	354
1933	424
1934	367
1935	449
1936	329
1937	237
1938	355
1939	331
1940	319
1941	319
1942	918
1943	413
1944	334
1945	475
1946	425
1947	704
1948	422
1949	554
1950	778
1951	580
1952	425
1953	346
1954	269
1955	577
1956	427
1957	370
1958	725
1959	414
1960	487
1961	680
1962	360
1963	715
1964	329
1965	624
1966	410
1967	394
1968	433
1969	278
1970	1,046
1971	485
1972	480
1973	1,208
1974	1,204
1975	1,116
1976	556
1977	814
1978	619
1979	577
1980	633
1981	604
1982	702
1983	1,128
1984	1,565
1985	771
1986	1,207
1987	729
1988	740
1989	1,668
1990	969
1991	519
1992	1,250
1993	1,055
1994	842
1995	1,251
1996	676
1997	1,238
1998	945
1999	933
2000	1,966
2001	1,097
2002	885
2003	863
2004	600
2005	1,256
2006	1,306
2007	1,244
2008	633
2009	866
2010	1,340
2011	770
2012	545
2013	514
2014	764
2015	770
2016	732
2017	1,402
2018	497
2019	516
2020	754
2021	457
2022	395
2023	689
2024	778
2025	576
2026	389

Download the Data

Data for records on 1940-09-24: 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 20	226
20 to 40	40
40 to 60	2
60 to 80	4
80 to 100	4