Weather Records on 20 September 1943

419 weather records were set or tied worldwide on 20 September 1943. Highest significance: White Cliffs (Bootra), AU.

Key Facts for 20 September 1943

On 20 September 1943, 419 weather records were set or tied at long-record stations worldwide.
75 were record highs and 168 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 8 monthly and 411 daily.
White Cliffs (Bootra) set a daily record precipitation of 30.5 mm (1.2 in) on 20 September 1943.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 442 records.

Record Map

419 stations

419 station records on 20 September 1943 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 1943: highest significance records shown on the map
Station	Country	Type	Value	Significance
White Cliffs (Bootra)	Australia	Record daily precipitation	30.5 mm (1.2 in)	60 of 100 (Major)
Morgan City	United States	Record daily precipitation	179.1 mm (7.1 in)	56 of 100 (Notable)
Ahmadabad	India	Record daily precipitation	103.1 mm (4.1 in)	46 of 100 (Notable)
Reserve	United States	Record daily precipitation	87.9 mm (3.5 in)	43 of 100 (Notable)
Guntersville	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Covington	United States	Record daily precipitation	63.2 mm (2.5 in)	41 of 100 (Notable)
Samnanger	Norway	Record daily precipitation	118.6 mm (4.7 in)	40 of 100 (Notable)
Perryville	United States	Record daily precipitation	69.3 mm (2.7 in)	39 of 100 (Notable)
Savannah 6 SW	United States	Record daily precipitation	64.8 mm (2.6 in)	39 of 100 (Notable)
Bikin	Russia	Record daily precipitation	44.5 mm (1.8 in)	38 of 100 (Notable)
Murfreesboro 5 N	United States	Record daily precipitation	61.7 mm (2.4 in)	38 of 100 (Notable)
Bryson City 2	United States	Record daily precipitation	56.4 mm (2.2 in)	37 of 100 (Notable)
Decatur	United States	Record daily precipitation	62.5 mm (2.5 in)	33 of 100 (Routine)
Athens	United States	Record low maximum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Winthrop UNIV	United States	Record daily precipitation	58.4 mm (2.3 in)	32 of 100 (Routine)
Athens	United States	Record daily precipitation	43.2 mm (1.7 in)	30 of 100 (Routine)
Rome	United States	Record daily precipitation	36.6 mm (1.4 in)	30 of 100 (Routine)
Washington 2 ESE	United States	Record daily precipitation	41.1 mm (1.6 in)	30 of 100 (Routine)
Tullahoma	United States	Record daily precipitation	45.0 mm (1.8 in)	30 of 100 (Routine)
Murphy 4ESE	United States	Record daily precipitation	55.9 mm (2.2 in)	29 of 100 (Routine)
Greenwood	United States	Record daily precipitation	38.4 mm (1.5 in)	29 of 100 (Routine)
Nikolaevsk-Na-Amure	Russia	Record high minimum temperature	16.8 C (62.2 F)	28 of 100 (Routine)
Carlton Brg	United States	Record daily precipitation	55.9 mm (2.2 in)	28 of 100 (Routine)
Lenoir	United States	Record daily precipitation	39.4 mm (1.6 in)	28 of 100 (Routine)
Crossville Ed & Rsch STN	United States	Record daily precipitation	37.6 mm (1.5 in)	28 of 100 (Routine)
Valley Head	United States	Record daily precipitation	41.9 mm (1.6 in)	27 of 100 (Routine)
Canton	United States	Record daily precipitation	40.4 mm (1.6 in)	27 of 100 (Routine)
Hartwell	United States	Record daily precipitation	60.5 mm (2.4 in)	27 of 100 (Routine)
Blair	United States	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Liberty	United States	Record daily precipitation	70.9 mm (2.8 in)	27 of 100 (Routine)
Chidlow	Australia	Record daily precipitation	29.7 mm (1.2 in)	26 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record high minimum temperature	17.0 C (62.6 F)	26 of 100 (Routine)
Booneville	United States	Record low maximum temperature	18.3 C (64.9 F)	26 of 100 (Routine)
University	United States	Record low maximum temperature	19.4 C (66.9 F)	26 of 100 (Routine)
Timovskoe	Russia	Record high minimum temperature	14.5 C (58.1 F)	25 of 100 (Routine)
Gainesville	United States	Record daily precipitation	53.8 mm (2.1 in)	25 of 100 (Routine)
Greensboro	United States	Record daily precipitation	33.3 mm (1.3 in)	25 of 100 (Routine)
Caroleen	United States	Record daily precipitation	63.5 mm (2.5 in)	25 of 100 (Routine)
Statesville 2 NNE	United States	Record daily precipitation	39.1 mm (1.5 in)	25 of 100 (Routine)
Santuck	United States	Record daily precipitation	61.0 mm (2.4 in)	25 of 100 (Routine)
Adairsville	United States	Record daily precipitation	33.5 mm (1.3 in)	24 of 100 (Routine)
Rajkot	India	Record daily precipitation	50.3 mm (2.0 in)	23 of 100 (Routine)
Bridgeport 5 NW	United States	Record daily precipitation	57.2 mm (2.3 in)	23 of 100 (Routine)
Washington 2 ESE	United States	Record low maximum temperature	17.8 C (64.0 F)	23 of 100 (Routine)
Calhoun 2 N	United States	Record low maximum temperature	20.0 C (68.0 F)	23 of 100 (Routine)
Ruston la Tech	United States	Record low maximum temperature	20.6 C (69.1 F)	23 of 100 (Routine)
Schriever	United States	Record daily precipitation	68.6 mm (2.7 in)	23 of 100 (Routine)
Jefferson 2 E	United States	Record low maximum temperature	15.0 C (59.0 F)	23 of 100 (Routine)
Morganton	United States	Record low maximum temperature	15.0 C (59.0 F)	23 of 100 (Routine)
Valley Head	United States	Record low maximum temperature	18.9 C (66.0 F)	22 of 100 (Routine)
Monticello	United States	Record low maximum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Hernando	United States	Record low maximum temperature	18.9 C (66.0 F)	22 of 100 (Routine)
Macon 2 NE	United States	Record low maximum temperature	22.2 C (72.0 F)	22 of 100 (Routine)
Morganton	United States	Record daily precipitation	45.7 mm (1.8 in)	22 of 100 (Routine)
Rock House	United States	Record daily precipitation	66.0 mm (2.6 in)	22 of 100 (Routine)
Winnsboro	United States	Record low maximum temperature	19.4 C (66.9 F)	22 of 100 (Routine)
Deer Park AP	United States	Record high minimum temperature	11.7 C (53.1 F)	22 of 100 (Routine)
Vashon Island	United States	Record high minimum temperature	14.4 C (57.9 F)	22 of 100 (Routine)
Murrungowar	Australia	Record daily precipitation	25.9 mm (1.0 in)	21 of 100 (Routine)
Corning	United States	Record low maximum temperature	19.4 C (66.9 F)	21 of 100 (Routine)

Counts by Type and Timescale

419 records

Records set or tied on 20 September 1943 by type: Highest daily maximum 41, Lowest daily maximum 113, Highest daily minimum 34, Lowest daily minimum 55, Heaviest daily rainfall 176.

Records on 20 September 1943 by type
Record type	Records
Highest daily maximum	41
Lowest daily maximum	113
Highest daily minimum	34
Lowest daily minimum	55
Heaviest daily rainfall	176
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 September 1943 by timescale: all-time 0, monthly 8, daily 411.

How Much Records Were Beaten By

337 broken records

Margins by which the 337 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.7. Ties are not counted.

Top 20 by Significance

20 September 1943

Top 20 records on 20 September 1943 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1943	White Cliffs (Bootra), AU	daily rain	30.5 mm (1.2 in)	30.5 mm (1.2 in)	52 years	60 of 100 (Major)
20 September 1943	Morgan City, US	monthly rain	179.1 mm (7.1 in)	59.7 mm (2.4 in)	35 years	56 of 100 (Notable)
20 September 1943	Ahmadabad, IN	daily rain	103.1 mm (4.1 in)	80.7 mm (3.2 in)	16 years	46 of 100 (Notable)
20 September 1943	Reserve, US	daily rain	87.9 mm (3.5 in)	53.9 mm (2.1 in)	34 years	43 of 100 (Notable)
20 September 1943	Guntersville, US	daily rain	66.0 mm (2.6 in)	55.1 mm (2.2 in)	12 years	41 of 100 (Notable)
20 September 1943	Covington, US	daily rain	63.2 mm (2.5 in)	37.8 mm (1.5 in)	32 years	41 of 100 (Notable)
20 September 1943	Samnanger, NO	daily rain	118.6 mm (4.7 in)	65.6 mm (2.6 in)	8 years	40 of 100 (Notable)
20 September 1943	Perryville, US	daily rain	69.3 mm (2.7 in)	36.3 mm (1.4 in)	42 years	39 of 100 (Notable)
20 September 1943	Savannah 6 SW, US	daily rain	64.8 mm (2.6 in)	33.0 mm (1.3 in)	42 years	39 of 100 (Notable)
20 September 1943	Bikin, RU	daily rain	44.5 mm (1.8 in)	25.4 mm (1.0 in)	28 years	38 of 100 (Notable)
20 September 1943	Murfreesboro 5 N, US	daily rain	61.7 mm (2.4 in)	37.6 mm (1.5 in)	28 years	38 of 100 (Notable)
20 September 1943	Bryson City 2, US	daily rain	56.4 mm (2.2 in)	31.3 mm (1.2 in)	29 years	37 of 100 (Notable)
20 September 1943	Decatur, US	daily rain	62.5 mm (2.5 in)	14.5 mm (0.6 in)	50 years	33 of 100 (Routine)
20 September 1943	Athens, US	daily low max	16.7 C (62.1 F)	3.9 C (7.0 F)	57 years	33 of 100 (Routine)
20 September 1943	Winthrop UNIV, US	daily rain	58.4 mm (2.3 in)	31.7 mm (1.2 in)	24 years	32 of 100 (Routine)
20 September 1943	Athens, US	daily rain	43.2 mm (1.7 in)	26.7 mm (1.1 in)	24 years	30 of 100 (Routine)
20 September 1943	Rome, US	daily rain	36.6 mm (1.4 in)	25.2 mm (1.0 in)	24 years	30 of 100 (Routine)
20 September 1943	Washington 2 ESE, US	daily rain	41.1 mm (1.6 in)	29.2 mm (1.1 in)	36 years	30 of 100 (Routine)
20 September 1943	Tullahoma, US	daily rain	45.0 mm (1.8 in)	19.6 mm (0.8 in)	36 years	30 of 100 (Routine)
20 September 1943	Murphy 4ESE, US	daily rain	55.9 mm (2.2 in)	20.6 mm (0.8 in)	24 years	29 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

1812 to 1943

Records set or tied on this calendar date in each year from 1812 to 1943. 1943 had 419 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 1943-09-20: 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	296
20 to 40	35
40 to 60	4
60 to 80	1
80 to 100	1