Weather Records on 1 September 1940

333 weather records were set or tied worldwide on 1 September 1940. Highest significance: Laurel 3 W, US.

Key Facts for 1 September 1940

On 1 September 1940, 333 weather records were set or tied at long-record stations worldwide.
156 were record highs and 36 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 22 monthly and 310 daily.
Laurel 3 W set a daily record precipitation of 86.1 mm (3.4 in) on 1 September 1940.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 442 records.

Record Map

333 stations

333 station records on 1 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Laurel 3 W	United States	Record daily precipitation	86.1 mm (3.4 in)	55 of 100 (Notable)
Bridgeton 1 NE	United States	Record daily precipitation	103.6 mm (4.1 in)	54 of 100 (Notable)
Bancroft	Canada	Record daily precipitation	50.8 mm (2.0 in)	52 of 100 (Notable)
Hanover	United States	Record daily precipitation	56.9 mm (2.2 in)	52 of 100 (Notable)
Williamstown	United States	Record daily precipitation	82.3 mm (3.2 in)	51 of 100 (Notable)
Trenton 2	United States	Record daily precipitation	124.7 mm (4.9 in)	49 of 100 (Notable)
Indian Mills 2 W	United States	Record daily precipitation	115.6 mm (4.6 in)	47 of 100 (Notable)
Moorestown 4 E	United States	Record daily precipitation	114.3 mm (4.5 in)	47 of 100 (Notable)
Englesberg Village	Australia	Record daily precipitation	37.6 mm (1.5 in)	46 of 100 (Notable)
Samnanger	Norway	Record daily precipitation	121.3 mm (4.8 in)	46 of 100 (Notable)
Matamoras	United States	Record daily precipitation	69.3 mm (2.7 in)	46 of 100 (Notable)
Silda Belpahari	India	Record daily precipitation	89.4 mm (3.5 in)	45 of 100 (Notable)
Beaudesert Cryna	Australia	Record daily precipitation	40.4 mm (1.6 in)	44 of 100 (Notable)
Easton	United States	Record daily precipitation	112.8 mm (4.4 in)	44 of 100 (Notable)
Pottsville	United States	Record daily precipitation	105.4 mm (4.1 in)	44 of 100 (Notable)
Chakaibanda	India	Record daily precipitation	192.0 mm (7.6 in)	41 of 100 (Notable)
Hightstown 2 W	United States	Record daily precipitation	85.6 mm (3.4 in)	41 of 100 (Notable)
Philadelphia City	United States	Record daily precipitation	81.0 mm (3.2 in)	41 of 100 (Notable)
Mount Gravatt	Australia	Record daily precipitation	31.2 mm (1.2 in)	39 of 100 (Notable)
Ringtown	United States	Record daily precipitation	72.6 mm (2.9 in)	37 of 100 (Notable)
Benipatti	India	Record daily precipitation	135.6 mm (5.3 in)	36 of 100 (Notable)
Southport Ridgeway Ave	Australia	Record daily precipitation	57.4 mm (2.3 in)	34 of 100 (Routine)
Lake Placid 2 S	United States	Record daily precipitation	47.8 mm (1.9 in)	34 of 100 (Routine)
Ernest Junction Rail STN	Australia	Record daily precipitation	88.9 mm (3.5 in)	33 of 100 (Routine)
College Park	United States	Record daily precipitation	54.6 mm (2.1 in)	33 of 100 (Routine)
Plymouth	United States	Record daily precipitation	46.2 mm (1.8 in)	32 of 100 (Routine)
Dover	United States	Record daily precipitation	77.0 mm (3.0 in)	31 of 100 (Routine)
Raquette Lake	United States	Record daily precipitation	49.0 mm (1.9 in)	31 of 100 (Routine)
Moose Jaw Chab	Canada	Record high minimum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Charlotteburg Rsvr	United States	Record daily precipitation	77.0 mm (3.0 in)	30 of 100 (Routine)
Albany	United States	Record daily precipitation	59.7 mm (2.4 in)	30 of 100 (Routine)
Lebanon 3 W	United States	Record daily precipitation	94.0 mm (3.7 in)	30 of 100 (Routine)
Harpers Ferry River	United States	Record daily precipitation	48.8 mm (1.9 in)	30 of 100 (Routine)
Hvar	Croatia	Record low minimum temperature	14.2 C (57.6 F)	29 of 100 (Routine)
Indian Lake 2SW	United States	Record daily precipitation	58.4 mm (2.3 in)	29 of 100 (Routine)
Sherburne	United States	Record daily precipitation	43.9 mm (1.7 in)	29 of 100 (Routine)
Humboldt	Canada	Record high minimum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Pitea	Sweden	Record daily precipitation	46.3 mm (1.8 in)	28 of 100 (Routine)
Schenley Lock 5	United States	Record daily precipitation	25.4 mm (1.0 in)	28 of 100 (Routine)
Elko Rgnl AP	United States	Record high minimum temperature	13.9 C (57.0 F)	28 of 100 (Routine)
Solomons	United States	Record daily precipitation	38.4 mm (1.5 in)	26 of 100 (Routine)
Dannemora	United States	Record daily precipitation	52.1 mm (2.1 in)	26 of 100 (Routine)
Staunton Wtp	United States	Record daily precipitation	25.7 mm (1.0 in)	26 of 100 (Routine)
Portland Rfc City	United States	Record high minimum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Bedford Hills	United States	Record high minimum temperature	25.0 C (77.0 F)	24 of 100 (Routine)
Cape Leeuwin	Australia	Record high minimum temperature	16.2 C (61.2 F)	23 of 100 (Routine)
Calarasi	Romania	Record low maximum temperature	18.1 C (64.6 F)	23 of 100 (Routine)
Tribes Hill	United States	Record daily precipitation	50.3 mm (2.0 in)	23 of 100 (Routine)
Acmetonia Lock 3	United States	Record daily precipitation	27.4 mm (1.1 in)	23 of 100 (Routine)
Coraopolis Neville Is	United States	Record daily precipitation	26.2 mm (1.0 in)	23 of 100 (Routine)
Pathfinder Dam	United States	Record high maximum temperature	34.4 C (93.9 F)	23 of 100 (Routine)
Southern Cross	Australia	Record high minimum temperature	16.1 C (61.0 F)	22 of 100 (Routine)
Milford 2 SE	United States	Record daily precipitation	38.1 mm (1.5 in)	22 of 100 (Routine)
Cambridge Water Trmt P	United States	Record daily precipitation	71.1 mm (2.8 in)	22 of 100 (Routine)
Cheltenham 1 NW	United States	Record daily precipitation	35.3 mm (1.4 in)	22 of 100 (Routine)
Newcastle	United States	Record high maximum temperature	38.3 C (100.9 F)	22 of 100 (Routine)
Havre Wb City	United States	Record high maximum temperature	35.0 C (95.0 F)	22 of 100 (Routine)
Karlsruhe	Germany	Record low minimum temperature	6.1 C (43.0 F)	21 of 100 (Routine)
Seligman	United States	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Fallston	United States	Record daily precipitation	45.5 mm (1.8 in)	21 of 100 (Routine)

Counts by Type and Timescale

333 records

Records set or tied on 1 September 1940 by type: Highest daily maximum 69, Lowest daily maximum 21, Highest daily minimum 87, Lowest daily minimum 15, Heaviest daily rainfall 141.

Records on 1 September 1940 by type
Record type	Records
Highest daily maximum	69
Lowest daily maximum	21
Highest daily minimum	87
Lowest daily minimum	15
Heaviest daily rainfall	141
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 1 September 1940 by timescale: all-time 1, monthly 22, daily 310.

How Much Records Were Beaten By

275 broken records

Margins by which the 275 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 93.7. Ties are not counted.

Top 20 by Significance

1 September 1940

Top 20 records on 1 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 1940	Laurel 3 W, US	daily rain	86.1 mm (3.4 in)	67.0 mm (2.6 in)	39 years	55 of 100 (Notable)
1 September 1940	Bridgeton 1 NE, US	daily rain	103.6 mm (4.1 in)	79.5 mm (3.1 in)	30 years	54 of 100 (Notable)
1 September 1940	Bancroft, CA	daily rain	50.8 mm (2.0 in)	46.7 mm (1.8 in)	32 years	52 of 100 (Notable)
1 September 1940	Hanover, US	daily rain	56.9 mm (2.2 in)	34.3 mm (1.4 in)	51 years	52 of 100 (Notable)
1 September 1940	Williamstown, US	daily rain	82.3 mm (3.2 in)	54.9 mm (2.2 in)	22 years	51 of 100 (Notable)
1 September 1940	Trenton 2, US	daily rain	124.7 mm (4.9 in)	81.8 mm (3.2 in)	8 years	49 of 100 (Notable)
1 September 1940	Indian Mills 2 W, US	daily rain	115.6 mm (4.6 in)	63.5 mm (2.5 in)	23 years	47 of 100 (Notable)
1 September 1940	Moorestown 4 E, US	daily rain	114.3 mm (4.5 in)	53.1 mm (2.1 in)	30 years	47 of 100 (Notable)
1 September 1940	Englesberg Village, AU	daily rain	37.6 mm (1.5 in)	33.5 mm (1.3 in)	28 years	46 of 100 (Notable)
1 September 1940	Samnanger, NO	daily rain	121.3 mm (4.8 in)	64.2 mm (2.5 in)	29 years	46 of 100 (Notable)
1 September 1940	Matamoras, US	daily rain	69.3 mm (2.7 in)	46.4 mm (1.8 in)	22 years	46 of 100 (Notable)
1 September 1940	Silda Belpahari, IN	daily rain	89.4 mm (3.5 in)	51.3 mm (2.0 in)	26 years	45 of 100 (Notable)
1 September 1940	Beaudesert Cryna, AU	daily rain	40.4 mm (1.6 in)	27.7 mm (1.1 in)	38 years	44 of 100 (Notable)
1 September 1940	Easton, US	daily rain	112.8 mm (4.4 in)	75.0 mm (3.0 in)	22 years	44 of 100 (Notable)
1 September 1940	Pottsville, US	daily rain	105.4 mm (4.1 in)	80.0 mm (3.1 in)	2 years	44 of 100 (Notable)
1 September 1940	Chakaibanda, IN	all-time rain	192.0 mm (7.6 in)	25.9 mm (1.0 in)	15 years	41 of 100 (Notable)
1 September 1940	Hightstown 2 W, US	daily rain	85.6 mm (3.4 in)	44.7 mm (1.8 in)	30 years	41 of 100 (Notable)
1 September 1940	Philadelphia City, US	daily rain	81.0 mm (3.2 in)	37.6 mm (1.5 in)	30 years	41 of 100 (Notable)
1 September 1940	Mount Gravatt, AU	daily rain	31.2 mm (1.2 in)	28.4 mm (1.1 in)	24 years	39 of 100 (Notable)
1 September 1940	Ringtown, US	daily rain	72.6 mm (2.9 in)	34.5 mm (1.4 in)	30 years	37 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

1797 to 1940

Records set or tied on this calendar date in each year from 1797 to 1940. 1940 had 333 records.

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

Records on 09-01 in each year
Year	Records
1797	1
1806	1
1819	1
1827	1
1831	1
1838	1
1851	1
1853	1
1854	1
1857	1
1858	1
1859	1
1860	2
1861	1
1865	1
1866	1
1867	2
1869	3
1871	1
1873	1
1876	2
1877	2
1878	3
1879	2
1881	5
1883	1
1886	3
1887	3
1888	2
1890	2
1892	2
1894	3
1897	4
1898	10
1899	3
1900	2
1901	14
1902	5
1903	16
1904	9
1905	6
1906	26
1907	14
1908	26
1909	34
1910	22
1911	16
1912	47
1913	32
1914	23
1915	46
1916	16
1917	24
1918	31
1919	19
1920	31
1921	46
1922	67
1923	75
1924	210
1925	127
1926	182
1927	136
1928	166
1929	324
1930	264
1931	233
1932	550
1933	622
1934	654
1935	584
1936	385
1937	502
1938	373
1939	303
1940	333
1941	497
1942	532
1943	578
1944	377
1945	497
1946	642
1947	555
1948	460
1949	1,102
1950	849
1951	668
1952	644
1953	937
1954	407
1955	413
1956	504
1957	320
1958	427
1959	519
1960	408
1961	531
1962	368
1963	416
1964	621
1965	657
1966	596
1967	1,263
1968	604
1969	493
1970	502
1971	464
1972	518
1973	874
1974	895
1975	939
1976	627
1977	500
1978	809
1979	459
1980	671
1981	649
1982	642
1983	1,167
1984	619
1985	901
1986	964
1987	909
1988	651
1989	823
1990	749
1991	687
1992	1,010
1993	1,122
1994	1,291
1995	1,165
1996	823
1997	1,161
1998	1,159
1999	925
2000	1,613
2001	904
2002	778
2003	1,254
2004	827
2005	901
2006	1,157
2007	976
2008	1,204
2009	1,003
2010	1,313
2011	1,071
2012	874
2013	775
2014	515
2015	661
2016	522
2017	686
2018	399
2019	800
2020	689
2021	751
2022	1,016
2023	720
2024	938
2025	359
2026	521

Download the Data

Data for records on 1940-09-01: 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	235
20 to 40	24
40 to 60	8
60 to 80	5
80 to 100	3