Weather Records on 21 September 1943

407 weather records were set or tied worldwide on 21 September 1943. Highest significance: Conway, US.

Key Facts for 21 September 1943

On 21 September 1943, 407 weather records were set or tied at long-record stations worldwide.
99 were record highs and 91 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 401 daily.
Conway set a daily record precipitation of 100.6 mm (4.0 in) on 21 September 1943.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 451 records.

Record Map

407 stations

407 station records on 21 September 1943 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1943: highest significance records shown on the map
Station	Country	Type	Value	Significance
Conway	United States	Record daily precipitation	100.6 mm (4.0 in)	45 of 100 (Notable)
Burnie (No 1)	Australia	Record daily precipitation	32.0 mm (1.3 in)	44 of 100 (Notable)
Jokkmokk	Sweden	Record daily precipitation	39.5 mm (1.6 in)	43 of 100 (Notable)
Ridgley	Australia	Record daily precipitation	48.8 mm (1.9 in)	41 of 100 (Notable)
Sodankyla AWS	Finland	Record daily precipitation	26.9 mm (1.1 in)	40 of 100 (Notable)
Jeanerette 5 NW	United States	Record daily precipitation	64.3 mm (2.5 in)	39 of 100 (Notable)
Dehri	India	Record daily precipitation	87.1 mm (3.4 in)	38 of 100 (Notable)
Penola (Comaum Park)	Australia	Record daily precipitation	26.7 mm (1.1 in)	37 of 100 (Notable)
Neuse 2 NE	United States	Record daily precipitation	59.9 mm (2.4 in)	37 of 100 (Notable)
Louisburg	United States	Record daily precipitation	62.5 mm (2.5 in)	35 of 100 (Notable)
Georgetown 2 E	United States	Record daily precipitation	99.1 mm (3.9 in)	35 of 100 (Notable)
Charters Towers Post Office	Australia	Record high maximum temperature	39.4 C (102.9 F)	32 of 100 (Routine)
Talladega	United States	Record daily precipitation	120.9 mm (4.8 in)	32 of 100 (Routine)
Moncure 3 SE	United States	Record daily precipitation	47.5 mm (1.9 in)	32 of 100 (Routine)
Catawba	United States	Record daily precipitation	43.7 mm (1.7 in)	32 of 100 (Routine)
Coleraine Hospital	Australia	Record daily precipitation	26.4 mm (1.0 in)	31 of 100 (Routine)
Wynyard State School	Australia	Record daily precipitation	30.2 mm (1.2 in)	31 of 100 (Routine)
Weldon	United States	Record daily precipitation	44.2 mm (1.7 in)	31 of 100 (Routine)
Boulia Airport	Australia	Record high maximum temperature	41.7 C (107.1 F)	30 of 100 (Routine)
Mangaldai	India	Record daily precipitation	77.2 mm (3.0 in)	30 of 100 (Routine)
Parvatipur	India	Record daily precipitation	68.3 mm (2.7 in)	29 of 100 (Routine)
Rome	United States	Record daily precipitation	36.3 mm (1.4 in)	29 of 100 (Routine)
Morgan City	United States	Record daily precipitation	82.8 mm (3.3 in)	29 of 100 (Routine)
Richmond City Locks	United States	Record daily precipitation	42.9 mm (1.7 in)	29 of 100 (Routine)
Rockingham	United States	Record daily precipitation	58.9 mm (2.3 in)	27 of 100 (Routine)
Elizabethton	United States	Record daily precipitation	50.8 mm (2.0 in)	26 of 100 (Routine)
Mohawk	United States	Record high minimum temperature	33.3 C (91.9 F)	25 of 100 (Routine)
San Bernardino F S 226	United States	Record high maximum temperature	44.4 C (111.9 F)	25 of 100 (Routine)
Greenville Dwtn AP	United States	Record low maximum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Burketown Post Office	Australia	Record high maximum temperature	36.7 C (98.1 F)	24 of 100 (Routine)
Gayndah Post Office	Australia	Record high maximum temperature	36.2 C (97.2 F)	24 of 100 (Routine)
Svyatoy Nos;Cape(Closed)	Russia	Record high minimum temperature	8.7 C (47.7 F)	24 of 100 (Routine)
Milledgeville	United States	Record low maximum temperature	20.0 C (68.0 F)	24 of 100 (Routine)
Experiment	United States	Record low maximum temperature	18.3 C (64.9 F)	23 of 100 (Routine)
Southern Pines 2 W	United States	Record daily precipitation	47.5 mm (1.9 in)	23 of 100 (Routine)
Clayton 1 SSW	United States	Record low maximum temperature	16.1 C (61.0 F)	22 of 100 (Routine)
Hartwell	United States	Record low maximum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Rocky Mt	United States	Record daily precipitation	38.6 mm (1.5 in)	22 of 100 (Routine)
Winnsboro	United States	Record low maximum temperature	19.4 C (66.9 F)	22 of 100 (Routine)
Brisbane Regional Office	Australia	Record high maximum temperature	33.1 C (91.6 F)	21 of 100 (Routine)
Collingwood	Canada	Record low minimum temperature	1.1 C (34.0 F)	21 of 100 (Routine)
Kulikuchi	India	Record daily precipitation	49.8 mm (2.0 in)	21 of 100 (Routine)
Kadipur	India	Record daily precipitation	62.2 mm (2.4 in)	21 of 100 (Routine)
Poronajsk	Russia	Record high minimum temperature	15.1 C (59.2 F)	21 of 100 (Routine)
Greensboro	United States	Record low maximum temperature	22.8 C (73.0 F)	21 of 100 (Routine)
Batesville	United States	Record low maximum temperature	20.0 C (68.0 F)	21 of 100 (Routine)
Smithfield	United States	Record daily precipitation	61.2 mm (2.4 in)	21 of 100 (Routine)
Kurnalpi	Australia	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Minara	Australia	Record daily precipitation	7.6 mm (0.30 in)	20 of 100 (Routine)
Kanowna	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Yarragadee	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Southern Cross	Australia	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Wialcutting	Australia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Malcolm	Australia	Record daily precipitation	3.8 mm (0.15 in)	20 of 100 (Routine)
Bulong	Australia	Record daily precipitation	4.6 mm (0.18 in)	20 of 100 (Routine)
Yundamindra	Australia	Record daily precipitation	7.1 mm (0.28 in)	20 of 100 (Routine)
Bool Lagoon	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Creswick	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Merredin Research Station	Australia	Record daily precipitation	9.4 mm (0.37 in)	20 of 100 (Routine)
Menzies	Australia	Record daily precipitation	4.1 mm (0.16 in)	20 of 100 (Routine)

Counts by Type and Timescale

407 records

Records set or tied on 21 September 1943 by type: Highest daily maximum 68, Lowest daily maximum 60, Highest daily minimum 31, Lowest daily minimum 31, Heaviest daily rainfall 217.

Records on 21 September 1943 by type
Record type	Records
Highest daily maximum	68
Lowest daily maximum	60
Highest daily minimum	31
Lowest daily minimum	31
Heaviest daily rainfall	217
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1943 by timescale: all-time 0, monthly 6, daily 401.

How Much Records Were Beaten By

340 broken records

Margins by which the 340 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 66.6. Ties are not counted.

Top 20 by Significance

21 September 1943

Top 20 records on 21 September 1943 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1943	Conway, US	daily rain	100.6 mm (4.0 in)	66.6 mm (2.6 in)	32 years	45 of 100 (Notable)
21 September 1943	Burnie (No 1), AU	daily rain	32.0 mm (1.3 in)	21.1 mm (0.8 in)	33 years	44 of 100 (Notable)
21 September 1943	Jokkmokk, SE	monthly rain	39.5 mm (1.6 in)	5.4 mm (0.21 in)	49 years	43 of 100 (Notable)
21 September 1943	Ridgley, AU	daily rain	48.8 mm (1.9 in)	27.5 mm (1.1 in)	18 years	41 of 100 (Notable)
21 September 1943	Sodankyla AWS, FI	daily rain	26.9 mm (1.1 in)	15.5 mm (0.6 in)	10 years	40 of 100 (Notable)
21 September 1943	Jeanerette 5 NW, US	daily rain	64.3 mm (2.5 in)	53.9 mm (2.1 in)	47 years	39 of 100 (Notable)
21 September 1943	Dehri, IN	daily rain	87.1 mm (3.4 in)	64.2 mm (2.5 in)	32 years	38 of 100 (Notable)
21 September 1943	Penola (Comaum Park), AU	daily rain	26.7 mm (1.1 in)	14.0 mm (0.6 in)	26 years	37 of 100 (Notable)
21 September 1943	Neuse 2 NE, US	daily rain	59.9 mm (2.4 in)	46.9 mm (1.8 in)	24 years	37 of 100 (Notable)
21 September 1943	Louisburg, US	daily rain	62.5 mm (2.5 in)	44.7 mm (1.8 in)	18 years	35 of 100 (Notable)
21 September 1943	Georgetown 2 E, US	daily rain	99.1 mm (3.9 in)	48.3 mm (1.9 in)	45 years	35 of 100 (Notable)
21 September 1943	Charters Towers Post Office, AU	monthly high max	39.4 C (102.9 F)	1.7 C (3.1 F)	38 years	32 of 100 (Routine)
21 September 1943	Talladega, US	monthly rain	120.9 mm (4.8 in)	11.7 mm (0.5 in)	36 years	32 of 100 (Routine)
21 September 1943	Moncure 3 SE, US	daily rain	47.5 mm (1.9 in)	35.8 mm (1.4 in)	24 years	32 of 100 (Routine)
21 September 1943	Catawba, US	daily rain	43.7 mm (1.7 in)	34.6 mm (1.4 in)	24 years	32 of 100 (Routine)
21 September 1943	Coleraine Hospital, AU	daily rain	26.4 mm (1.0 in)	9.6 mm (0.38 in)	34 years	31 of 100 (Routine)
21 September 1943	Wynyard State School, AU	daily rain	30.2 mm (1.2 in)	16.0 mm (0.6 in)	28 years	31 of 100 (Routine)
21 September 1943	Weldon, US	daily rain	44.2 mm (1.7 in)	18.0 mm (0.7 in)	50 years	31 of 100 (Routine)
21 September 1943	Boulia Airport, AU	monthly high max	41.7 C (107.1 F)	0.9 C (1.6 F)	45 years	30 of 100 (Routine)
21 September 1943	Mangaldai, IN	daily rain	77.2 mm (3.0 in)	46.5 mm (1.8 in)	1 year	30 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 1943

Records set or tied on this calendar date in each year from 1805 to 1943. 1943 had 407 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 1943-09-21: 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 10	293
10 to 20	24
20 to 30	12
30 to 40	4
40 to 50	4
50 to 60	1
60 to 70	2