Weather Records on 7 September 1940

226 weather records were set or tied worldwide on 7 September 1940. Highest significance: Charlottetown Cda, CA.

Key Facts for 7 September 1940

On 7 September 1940, 226 weather records were set or tied at long-record stations worldwide.
88 were record highs and 57 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 220 daily.
Charlottetown Cda set a daily record precipitation of 56.4 mm (2.2 in) on 7 September 1940.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 452 records.

Record Map

226 stations

226 station records on 7 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 7 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Charlottetown Cda	Canada	Record daily precipitation	56.4 mm (2.2 in)	48 of 100 (Notable)
Usilampatti	India	Record daily precipitation	105.7 mm (4.2 in)	46 of 100 (Notable)
Valapady	India	Record daily precipitation	83.8 mm (3.3 in)	46 of 100 (Notable)
Orillia	Canada	Record daily precipitation	47.0 mm (1.9 in)	38 of 100 (Notable)
Vallam	India	Record daily precipitation	123.2 mm (4.9 in)	33 of 100 (Routine)
Marungapuri	India	Record daily precipitation	67.3 mm (2.6 in)	33 of 100 (Routine)
Melbourne Regional Office	Australia	Record high maximum temperature	26.4 C (79.5 F)	32 of 100 (Routine)
Kollegal	India	Record daily precipitation	40.6 mm (1.6 in)	31 of 100 (Routine)
Geilo	Norway	Record daily precipitation	26.2 mm (1.0 in)	31 of 100 (Routine)
Bourke Post Office	Australia	Record high maximum temperature	32.8 C (91.0 F)	29 of 100 (Routine)
Le Mars	United States	Record daily precipitation	50.3 mm (2.0 in)	29 of 100 (Routine)
Ponnamaravathi	India	Record daily precipitation	79.2 mm (3.1 in)	26 of 100 (Routine)
Walgett Council Depot	Australia	Record high maximum temperature	30.7 C (87.3 F)	25 of 100 (Routine)
Cobar Post Office	Australia	Record high maximum temperature	30.7 C (87.3 F)	24 of 100 (Routine)
Krishnagiri	India	Record daily precipitation	63.5 mm (2.5 in)	24 of 100 (Routine)
Risnes I Fjotland	Norway	Record daily precipitation	27.2 mm (1.1 in)	23 of 100 (Routine)
Lysebotn	Norway	Record daily precipitation	43.2 mm (1.7 in)	23 of 100 (Routine)
Lake Cochituate	United States	Record low maximum temperature	17.2 C (63.0 F)	23 of 100 (Routine)
Saint Johnsbury	United States	Record low maximum temperature	13.9 C (57.0 F)	23 of 100 (Routine)
Blue Hill Coop	United States	Record low maximum temperature	13.3 C (55.9 F)	22 of 100 (Routine)
Windsor Kings College	Canada	Record low maximum temperature	13.9 C (57.0 F)	21 of 100 (Routine)
Tenali	India	Record daily precipitation	49.5 mm (1.9 in)	21 of 100 (Routine)
Sholavandan	India	Record daily precipitation	66.5 mm (2.6 in)	21 of 100 (Routine)
Waterbury	United States	Record low maximum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Warroad	United States	Record daily precipitation	25.4 mm (1.0 in)	21 of 100 (Routine)
Vanrhysdorp	South Africa	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Grants Pass	United States	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Ilulissat (Jakobshavn)	Greenland [Denmark]	Record daily precipitation	20.0 mm (0.8 in)	20 of 100 (Routine)
Middelwater	South Africa	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Martenshoop (Pol)	South Africa	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Beringarra	Australia	Record daily precipitation	1.8 mm (0.07 in)	20 of 100 (Routine)
Beaufort West (Met)	South Africa	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Fir Glen	South Africa	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Bakensrug	South Africa	Record daily precipitation	2.5 mm (0.10 in)	20 of 100 (Routine)
Mundaring	Australia	Record daily precipitation	29.2 mm (1.1 in)	20 of 100 (Routine)
Inverell Comparison	Australia	Record high maximum temperature	26.1 C (79.0 F)	20 of 100 (Routine)
Mildura Post Office	Australia	Record high maximum temperature	31.8 C (89.2 F)	20 of 100 (Routine)
Bee Branch	United States	Record high minimum temperature	23.3 C (73.9 F)	20 of 100 (Routine)
Haverhill	United States	Record low maximum temperature	15.6 C (60.1 F)	20 of 100 (Routine)
Hyannis	United States	Record low maximum temperature	15.6 C (60.1 F)	20 of 100 (Routine)
Kakabeka Falls	Canada	Record high minimum temperature	17.2 C (63.0 F)	19 of 100 (Routine)
Susanville 2SW	United States	Record daily precipitation	0.8 mm (0.03 in)	19 of 100 (Routine)
Mackay Lost Rvr Rs	United States	Record daily precipitation	12.7 mm (0.5 in)	19 of 100 (Routine)
Blackwater Post Office	Australia	Record daily precipitation	4.6 mm (0.18 in)	18 of 100 (Routine)
Attur	India	Record daily precipitation	65.5 mm (2.6 in)	18 of 100 (Routine)
Viralimalai	India	Record daily precipitation	65.0 mm (2.6 in)	18 of 100 (Routine)
Botnen I Forde	Norway	Record daily precipitation	63.4 mm (2.5 in)	18 of 100 (Routine)
Walsingham 1	South Africa	Record daily precipitation	16.5 mm (0.6 in)	18 of 100 (Routine)
Cle Elum	United States	Record high minimum temperature	17.8 C (64.0 F)	18 of 100 (Routine)
Robe Comparison	Australia	Record high maximum temperature	20.2 C (68.4 F)	17 of 100 (Routine)
Forbes (Camp Street)	Australia	Record high maximum temperature	29.0 C (84.2 F)	17 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record high maximum temperature	23.9 C (75.0 F)	17 of 100 (Routine)
T.Narsipur	India	Record daily precipitation	22.4 mm (0.9 in)	17 of 100 (Routine)
McGregor (Pol)	South Africa	Record daily precipitation	6.4 mm (0.25 in)	17 of 100 (Routine)
Steytlerville (Mag)	South Africa	Record daily precipitation	12.2 mm (0.5 in)	17 of 100 (Routine)
Gila Bend 2SE	United States	Record daily precipitation	14.0 mm (0.6 in)	17 of 100 (Routine)
Fall River	United States	Record low minimum temperature	7.8 C (46.0 F)	17 of 100 (Routine)
Worcester	United States	Record low maximum temperature	15.6 C (60.1 F)	17 of 100 (Routine)
Manistee 3SE	United States	Record daily precipitation	47.2 mm (1.9 in)	17 of 100 (Routine)
Bozeman Montana State UNIV	United States	Record high minimum temperature	13.9 C (57.0 F)	17 of 100 (Routine)

Counts by Type and Timescale

226 records

Records set or tied on 7 September 1940 by type: Highest daily maximum 46, Lowest daily maximum 38, Highest daily minimum 42, Lowest daily minimum 19, Heaviest daily rainfall 81.

Records on 7 September 1940 by type
Record type	Records
Highest daily maximum	46
Lowest daily maximum	38
Highest daily minimum	42
Lowest daily minimum	19
Heaviest daily rainfall	81
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 7 September 1940 by timescale: all-time 0, monthly 6, daily 220.

How Much Records Were Beaten By

176 broken records

Margins by which the 176 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 73.9. Ties are not counted.

Top 20 by Significance

7 September 1940

Top 20 records on 7 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 September 1940	Charlottetown Cda, CA	daily rain	56.4 mm (2.2 in)	36.3 mm (1.4 in)	22 years	48 of 100 (Notable)
7 September 1940	Usilampatti, IN	daily rain	105.7 mm (4.2 in)	73.9 mm (2.9 in)	13 years	46 of 100 (Notable)
7 September 1940	Valapady, IN	daily rain	83.8 mm (3.3 in)	69.6 mm (2.7 in)	9 years	46 of 100 (Notable)
7 September 1940	Orillia, CA	daily rain	47.0 mm (1.9 in)	22.4 mm (0.9 in)	24 years	38 of 100 (Notable)
7 September 1940	Vallam, IN	monthly rain	123.2 mm (4.9 in)	32.0 mm (1.3 in)	8 years	33 of 100 (Routine)
7 September 1940	Marungapuri, IN	daily rain	67.3 mm (2.6 in)	46.0 mm (1.8 in)	17 years	33 of 100 (Routine)
7 September 1940	Melbourne Regional Office, AU	daily high max	26.4 C (79.5 F)	2.1 C (3.8 F)	63 years	32 of 100 (Routine)
7 September 1940	Kollegal, IN	daily rain	40.6 mm (1.6 in)	29.9 mm (1.2 in)	35 years	31 of 100 (Routine)
7 September 1940	Geilo, NO	daily rain	26.2 mm (1.0 in)	10.3 mm (0.4 in)	35 years	31 of 100 (Routine)
7 September 1940	Bourke Post Office, AU	daily high max	32.8 C (91.0 F)	2.8 C (5.0 F)	55 years	29 of 100 (Routine)
7 September 1940	Le Mars, US	daily rain	50.3 mm (2.0 in)	32.0 mm (1.3 in)	26 years	29 of 100 (Routine)
7 September 1940	Ponnamaravathi, IN	daily rain	79.2 mm (3.1 in)	37.8 mm (1.5 in)	9 years	26 of 100 (Routine)
7 September 1940	Walgett Council Depot, AU	daily high max	30.7 C (87.3 F)	1.3 C (2.3 F)	59 years	25 of 100 (Routine)
7 September 1940	Cobar Post Office, AU	daily high max	30.7 C (87.3 F)	1.3 C (2.3 F)	54 years	24 of 100 (Routine)
7 September 1940	Krishnagiri, IN	daily rain	63.5 mm (2.5 in)	32.0 mm (1.3 in)	14 years	24 of 100 (Routine)
7 September 1940	Risnes I Fjotland, NO	daily rain	27.2 mm (1.1 in)	9.2 mm (0.36 in)	37 years	23 of 100 (Routine)
7 September 1940	Lysebotn, NO	daily rain	43.2 mm (1.7 in)	22.2 mm (0.9 in)	3 years	23 of 100 (Routine)
7 September 1940	Lake Cochituate, US	daily low max	17.2 C (63.0 F)	1.7 C (3.1 F)	51 years	23 of 100 (Routine)
7 September 1940	Saint Johnsbury, US	daily low max	13.9 C (57.0 F)	3.3 C (5.9 F)	40 years	23 of 100 (Routine)
7 September 1940	Blue Hill Coop, US	daily low max	13.3 C (55.9 F)	1.1 C (2.0 F)	51 years	22 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

1802 to 1940

Records set or tied on this calendar date in each year from 1802 to 1940. 1940 had 226 records.

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

Records on 09-07 in each year
Year	Records
1802	2
1814	2
1816	1
1833	1
1845	2
1847	1
1848	1
1850	1
1852	1
1856	1
1859	1
1860	2
1861	1
1864	2
1865	3
1868	1
1870	1
1871	4
1872	3
1873	1
1877	4
1878	1
1879	1
1881	2
1882	1
1883	2
1886	1
1887	3
1888	1
1889	1
1890	2
1891	7
1892	3
1894	8
1895	7
1896	1
1897	2
1898	8
1899	3
1900	1
1901	6
1902	3
1903	7
1904	8
1905	20
1906	8
1907	5
1908	26
1909	11
1910	15
1911	20
1912	39
1913	20
1914	29
1915	28
1916	39
1917	44
1918	35
1919	184
1920	375
1921	80
1922	98
1923	125
1924	232
1925	303
1926	117
1927	147
1928	130
1929	355
1930	108
1931	400
1932	478
1933	287
1934	566
1935	275
1936	370
1937	260
1938	348
1939	634
1940	226
1941	451
1942	415
1943	591
1944	519
1945	482
1946	356
1947	625
1948	353
1949	705
1950	704
1951	342
1952	301
1953	446
1954	390
1955	405
1956	752
1957	498
1958	570
1959	583
1960	763
1961	312
1962	729
1963	448
1964	463
1965	672
1966	365
1967	535
1968	417
1969	696
1970	917
1971	648
1972	534
1973	674
1974	709
1975	423
1976	763
1977	674
1978	1,165
1979	583
1980	613
1981	622
1982	684
1983	1,235
1984	1,396
1985	1,459
1986	1,062
1987	956
1988	1,266
1989	553
1990	900
1991	957
1992	1,257
1993	720
1994	523
1995	1,093
1996	982
1997	799
1998	1,262
1999	1,087
2000	1,320
2001	1,068
2002	1,169
2003	768
2004	865
2005	708
2006	1,105
2007	1,171
2008	1,210
2009	713
2010	1,147
2011	1,452
2012	699
2013	981
2014	491
2015	637
2016	868
2017	966
2018	723
2019	743
2020	1,352
2021	794
2022	2,096
2023	1,116
2024	1,216
2025	711
2026	760

Download the Data

Data for records on 1940-09-07: 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	148
10 to 20	15
20 to 30	5
30 to 40	5
40 to 50	1
50 to 60	0
60 to 70	1
70 to 80	1