Weather Records on 10 September 1940

410 weather records were set or tied worldwide on 10 September 1940. Highest significance: Augsburg (Sankt Stephan), DE.

Key Facts for 10 September 1940

On 10 September 1940, 410 weather records were set or tied at long-record stations worldwide.
148 were record highs and 152 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 399 daily.
Augsburg (Sankt Stephan) set a daily record precipitation of 70.6 mm (2.8 in) on 10 September 1940.
Across 166 earlier years (1812 to 2026) the same calendar date averaged 429 records.

Record Map

410 stations

410 station records on 10 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 10 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Augsburg (Sankt Stephan)	Germany	Record daily precipitation	70.6 mm (2.8 in)	55 of 100 (Notable)
Passau-Maierhof	Germany	Record daily precipitation	38.3 mm (1.5 in)	47 of 100 (Notable)
Tranqubar	India	Record daily precipitation	83.3 mm (3.3 in)	47 of 100 (Notable)
Metten	Germany	Record daily precipitation	44.2 mm (1.7 in)	46 of 100 (Notable)
Mt Airy 2 W	United States	Record daily precipitation	70.1 mm (2.8 in)	44 of 100 (Notable)
Lake Alice Near	United States	Record daily precipitation	42.7 mm (1.7 in)	43 of 100 (Notable)
Hohenpeissenberg	Germany	Record daily precipitation	39.1 mm (1.5 in)	40 of 100 (Notable)
Uccle	Belgium	Record low minimum temperature	4.0 C (39.2 F)	37 of 100 (Notable)
Adanakottai	India	Record daily precipitation	77.2 mm (3.0 in)	36 of 100 (Notable)
Mettupalayam	India	Record daily precipitation	38.4 mm (1.5 in)	34 of 100 (Routine)
Iluppur	India	Record daily precipitation	114.8 mm (4.5 in)	34 of 100 (Routine)
Bethesdaweg (Sar)	South Africa	Record daily precipitation	37.6 mm (1.5 in)	33 of 100 (Routine)
Bic	Canada	Record daily precipitation	35.6 mm (1.4 in)	31 of 100 (Routine)
Chatrapatti	India	Record daily precipitation	108.0 mm (4.3 in)	30 of 100 (Routine)
Omalur	India	Record daily precipitation	72.4 mm (2.9 in)	30 of 100 (Routine)
Escanaba	United States	Record low maximum temperature	10.0 C (50.0 F)	30 of 100 (Routine)
Pointe Au Pere	Canada	Record daily precipitation	40.1 mm (1.6 in)	27 of 100 (Routine)
Satyamangalam	India	Record daily precipitation	36.6 mm (1.4 in)	26 of 100 (Routine)
Hafslo	Norway	Record daily precipitation	25.5 mm (1.0 in)	26 of 100 (Routine)
Irvington	United States	Record daily precipitation	38.4 mm (1.5 in)	26 of 100 (Routine)
St John Bethlehem Aca	United States	Record daily precipitation	33.8 mm (1.3 in)	26 of 100 (Routine)
Austin #2	United States	Record high minimum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Rossland City Yard	Canada	Record high maximum temperature	30.6 C (87.1 F)	24 of 100 (Routine)
Pendleton Dwtn	United States	Record high minimum temperature	15.6 C (60.1 F)	24 of 100 (Routine)
New Braunfels	United States	Record high maximum temperature	38.9 C (102.0 F)	24 of 100 (Routine)
Pullman Exp STN	United States	Record high minimum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Pakala	India	Record daily precipitation	55.6 mm (2.2 in)	22 of 100 (Routine)
Kavali	India	Record daily precipitation	47.0 mm (1.9 in)	22 of 100 (Routine)
Nogales	United States	Record high maximum temperature	37.8 C (100.0 F)	22 of 100 (Routine)
Glenns Ferry	United States	Record high minimum temperature	17.8 C (64.0 F)	22 of 100 (Routine)
Payette	United States	Record high minimum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Shoshone 1 WNW	United States	Record high minimum temperature	17.2 C (63.0 F)	22 of 100 (Routine)
Gooding 2 S	United States	Record high minimum temperature	16.7 C (62.1 F)	22 of 100 (Routine)
Seattle Urban Site	United States	Record high minimum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Vancouver Pmo	Canada	Record high minimum temperature	15.0 C (59.0 F)	21 of 100 (Routine)
Lakeside	United States	Record high minimum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Regensburg	Germany	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Rocky Ford 2 SE	United States	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Mtn Home	United States	Record daily precipitation	7.4 mm (0.29 in)	20 of 100 (Routine)
Cle Elum	United States	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Las Animas	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Rietfontein (Pol)	South Africa	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Avon	United States	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Port Arthur	Canada	Record low maximum temperature	7.8 C (46.0 F)	20 of 100 (Routine)
Marseille Obs. Palais-Lonchamp	France	Record low maximum temperature	17.3 C (63.1 F)	20 of 100 (Routine)
Stuttgart-Stadt	Germany	Record daily precipitation	27.0 mm (1.1 in)	20 of 100 (Routine)
Srimushnam	India	Record daily precipitation	50.3 mm (2.0 in)	20 of 100 (Routine)
Vanur	India	Record daily precipitation	36.8 mm (1.4 in)	20 of 100 (Routine)
Manamathurai	India	Record daily precipitation	73.7 mm (2.9 in)	20 of 100 (Routine)
Mayuram	India	Record daily precipitation	44.5 mm (1.8 in)	20 of 100 (Routine)
Basel Binningen	Switzerland	Record daily precipitation	33.2 mm (1.3 in)	20 of 100 (Routine)
Houston Wb City	United States	Record high maximum temperature	37.2 C (99.0 F)	20 of 100 (Routine)
Anekal	India	Record daily precipitation	31.2 mm (1.2 in)	19 of 100 (Routine)
Vellore	India	Record daily precipitation	45.0 mm (1.8 in)	19 of 100 (Routine)
Ko253Lpatti Sr	India	Record daily precipitation	17.8 mm (0.7 in)	19 of 100 (Routine)
Avon Park 2 W	United States	Record low maximum temperature	28.9 C (84.0 F)	19 of 100 (Routine)
Hailey 3 NNW	United States	Record high minimum temperature	10.6 C (51.1 F)	19 of 100 (Routine)
Woodruff	United States	Record high minimum temperature	6.7 C (44.1 F)	19 of 100 (Routine)
Moxee	United States	Record high minimum temperature	13.9 C (57.0 F)	19 of 100 (Routine)
Odessa	United States	Record high minimum temperature	16.1 C (61.0 F)	19 of 100 (Routine)

Counts by Type and Timescale

410 records

Records set or tied on 10 September 1940 by type: Highest daily maximum 58, Lowest daily maximum 78, Highest daily minimum 90, Lowest daily minimum 74, Heaviest daily rainfall 110.

Records on 10 September 1940 by type
Record type	Records
Highest daily maximum	58
Lowest daily maximum	78
Highest daily minimum	90
Lowest daily minimum	74
Heaviest daily rainfall	110
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 10 September 1940 by timescale: all-time 0, monthly 11, daily 399.

How Much Records Were Beaten By

316 broken records

Margins by which the 316 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 66.0. Ties are not counted.

Top 20 by Significance

10 September 1940

Top 20 records on 10 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 September 1940	Augsburg (Sankt Stephan), DE	daily rain	70.6 mm (2.8 in)	45.1 mm (1.8 in)	32 years	55 of 100 (Notable)
10 September 1940	Passau-Maierhof, DE	daily rain	38.3 mm (1.5 in)	19.8 mm (0.8 in)	43 years	47 of 100 (Notable)
10 September 1940	Tranqubar, IN	daily rain	83.3 mm (3.3 in)	66.0 mm (2.6 in)	14 years	47 of 100 (Notable)
10 September 1940	Metten, DE	daily rain	44.2 mm (1.7 in)	32.1 mm (1.3 in)	2 years	46 of 100 (Notable)
10 September 1940	Mt Airy 2 W, US	daily rain	70.1 mm (2.8 in)	39.6 mm (1.6 in)	46 years	44 of 100 (Notable)
10 September 1940	Lake Alice Near, US	daily rain	42.7 mm (1.7 in)	27.7 mm (1.1 in)	22 years	43 of 100 (Notable)
10 September 1940	Hohenpeissenberg, DE	daily rain	39.1 mm (1.5 in)	0.2 mm (0.01 in)	126 years	40 of 100 (Notable)
10 September 1940	Uccle, BE	daily low min	4.0 C (39.2 F)	0.6 C (1.1 F)	88 years	37 of 100 (Notable)
10 September 1940	Adanakottai, IN	daily rain	77.2 mm (3.0 in)	45.4 mm (1.8 in)	23 years	36 of 100 (Notable)
10 September 1940	Mettupalayam, IN	daily rain	38.4 mm (1.5 in)	31.0 mm (1.2 in)	32 years	34 of 100 (Routine)
10 September 1940	Iluppur, IN	monthly rain	114.8 mm (4.5 in)	15.5 mm (0.6 in)	39 years	34 of 100 (Routine)
10 September 1940	Bethesdaweg (Sar), ZA	daily rain	37.6 mm (1.5 in)	26.4 mm (1.0 in)	39 years	33 of 100 (Routine)
10 September 1940	Bic, CA	daily rain	35.6 mm (1.4 in)	10.2 mm (0.4 in)	53 years	31 of 100 (Routine)
10 September 1940	Chatrapatti, IN	monthly rain	108.0 mm (4.3 in)	14.0 mm (0.6 in)	27 years	30 of 100 (Routine)
10 September 1940	Omalur, IN	daily rain	72.4 mm (2.9 in)	27.2 mm (1.1 in)	32 years	30 of 100 (Routine)
10 September 1940	Escanaba, US	daily low max	10.0 C (50.0 F)	2.2 C (4.0 F)	64 years	30 of 100 (Routine)
10 September 1940	Pointe Au Pere, CA	daily rain	40.1 mm (1.6 in)	8.6 mm (0.34 in)	38 years	27 of 100 (Routine)
10 September 1940	Satyamangalam, IN	daily rain	36.6 mm (1.4 in)	16.8 mm (0.7 in)	39 years	26 of 100 (Routine)
10 September 1940	Hafslo, NO	daily rain	25.5 mm (1.0 in)	6.5 mm (0.26 in)	44 years	26 of 100 (Routine)
10 September 1940	Irvington, US	daily rain	38.4 mm (1.5 in)	13.5 mm (0.5 in)	37 years	26 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 1940

Records set or tied on this calendar date in each year from 1812 to 1940. 1940 had 410 records.

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

Records on 09-10 in each year
Year	Records
1812	1
1813	1
1814	2
1818	1
1838	2
1841	1
1846	1
1847	1
1848	1
1850	2
1854	3
1857	1
1858	1
1865	5
1868	1
1869	2
1871	1
1874	2
1875	1
1876	2
1878	1
1879	2
1880	3
1881	2
1883	3
1884	4
1885	2
1886	1
1887	1
1888	2
1889	3
1890	1
1891	3
1892	3
1893	2
1894	4
1895	3
1896	1
1897	7
1898	4
1899	10
1901	1
1902	10
1903	13
1904	5
1905	7
1906	23
1907	15
1908	15
1909	25
1910	26
1911	8
1912	62
1913	24
1914	43
1915	53
1916	15
1917	79
1918	33
1919	42
1920	132
1921	207
1922	78
1923	38
1924	335
1925	197
1926	68
1927	262
1928	109
1929	282
1930	161
1931	724
1932	258
1933	333
1934	247
1935	478
1936	336
1937	376
1938	369
1939	386
1940	410
1941	389
1942	271
1943	352
1944	470
1945	334
1946	295
1947	534
1948	432
1949	793
1950	394
1951	344
1952	476
1953	250
1954	271
1955	376
1956	834
1957	332
1958	435
1959	670
1960	376
1961	459
1962	798
1963	384
1964	710
1965	355
1966	330
1967	512
1968	846
1969	635
1970	582
1971	400
1972	477
1973	559
1974	522
1975	528
1976	1,041
1977	391
1978	883
1979	563
1980	716
1981	629
1982	687
1983	1,329
1984	824
1985	1,140
1986	960
1987	574
1988	783
1989	1,098
1990	782
1991	827
1992	745
1993	936
1994	816
1995	643
1996	1,003
1997	829
1998	1,832
1999	1,068
2000	1,088
2001	1,129
2002	1,298
2003	1,149
2004	652
2005	1,173
2006	1,110
2007	866
2008	975
2009	636
2010	1,273
2011	1,235
2012	793
2013	1,198
2014	894
2015	789
2016	1,085
2017	674
2018	1,030
2019	816
2020	2,105
2021	1,311
2022	633
2023	1,114
2024	933
2025	583
2026	832

Download the Data

Data for records on 1940-09-10: 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 10	283
10 to 20	21
20 to 30	5
30 to 40	4
40 to 50	2
50 to 60	0
60 to 70	1