Weather Records on 10 August 1940

386 weather records were set or tied worldwide on 10 August 1940. Highest significance: Sogndal - Selseng, NO.

Key Facts for 10 August 1940

On 10 August 1940, 386 weather records were set or tied at long-record stations worldwide.
150 were record highs and 119 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 6 monthly and 378 daily.
Sogndal - Selseng set a daily record precipitation of 59.3 mm (2.3 in) on 10 August 1940.
Across 160 earlier years (1814 to 2026) the same calendar date averaged 469 records.

Record Map

386 stations

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

Weather records on 10 August 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sogndal - Selseng	Norway	Record daily precipitation	59.3 mm (2.3 in)	53 of 100 (Notable)
Gunnaur	India	Record daily precipitation	213.4 mm (8.4 in)	51 of 100 (Notable)
Anupshahr	India	Record daily precipitation	201.4 mm (7.9 in)	51 of 100 (Notable)
Melville	United States	Record daily precipitation	71.1 mm (2.8 in)	47 of 100 (Notable)
Grenada	United States	Record daily precipitation	94.0 mm (3.7 in)	40 of 100 (Notable)
Marseille Obs. Palais-Lonchamp	France	Record daily precipitation	27.8 mm (1.1 in)	39 of 100 (Notable)
Yarraloola	Australia	Record daily precipitation	34.0 mm (1.3 in)	38 of 100 (Notable)
Port Blair	India	Record daily precipitation	119.6 mm (4.7 in)	38 of 100 (Notable)
Schreiber	Canada	Record high minimum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
Tasiilaq	Greenland [Denmark]	Record daily precipitation	36.3 mm (1.4 in)	37 of 100 (Notable)
Vik I Sogn III	Norway	Record daily precipitation	33.4 mm (1.3 in)	36 of 100 (Notable)
Dauphin	Canada	Record high minimum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Sambhal	India	Record daily precipitation	148.1 mm (5.8 in)	35 of 100 (Notable)
Gopalpur	India	Record daily precipitation	114.3 mm (4.5 in)	33 of 100 (Routine)
Vicksburg	United States	Record daily precipitation	56.6 mm (2.2 in)	33 of 100 (Routine)
Norway House	Canada	Record high minimum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Kaufman 3 SE	United States	Record low minimum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Bijapur	India	Record daily precipitation	25.9 mm (1.0 in)	30 of 100 (Routine)
Bjornholt	Norway	Record daily precipitation	39.0 mm (1.5 in)	30 of 100 (Routine)
Springfield	United States	Record daily precipitation	57.7 mm (2.3 in)	30 of 100 (Routine)
Hafslo	Norway	Record daily precipitation	34.4 mm (1.4 in)	29 of 100 (Routine)
Ozark 6 NNW	United States	Record daily precipitation	58.4 mm (2.3 in)	29 of 100 (Routine)
Poplar Bluff	United States	Record daily precipitation	52.1 mm (2.1 in)	29 of 100 (Routine)
Mena	United States	Record low maximum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
Seymour 1 NNW	United States	Record daily precipitation	61.0 mm (2.4 in)	27 of 100 (Routine)
Koloa 936	United States	Record high minimum temperature	24.4 C (75.9 F)	26 of 100 (Routine)
Prescott 2 NNW	United States	Record low maximum temperature	25.6 C (78.1 F)	25 of 100 (Routine)
Oskaloosa	United States	Record daily precipitation	27.9 mm (1.1 in)	25 of 100 (Routine)
Ft Scott	United States	Record low maximum temperature	23.3 C (73.9 F)	25 of 100 (Routine)
Marble Hill	United States	Record daily precipitation	40.1 mm (1.6 in)	25 of 100 (Routine)
Poplar Bluff	United States	Record low maximum temperature	26.7 C (80.1 F)	25 of 100 (Routine)
Ashland	United States	Record high minimum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Huntsville	United States	Record low maximum temperature	25.6 C (78.1 F)	25 of 100 (Routine)
Liberty	United States	Record low minimum temperature	18.3 C (64.9 F)	25 of 100 (Routine)
Kempten	Germany	Record daily precipitation	25.5 mm (1.0 in)	24 of 100 (Routine)
Camden 1	United States	Record low maximum temperature	27.2 C (81.0 F)	24 of 100 (Routine)
Beaufort	United States	Record daily precipitation	28.7 mm (1.1 in)	24 of 100 (Routine)
Chaibasa	India	Record daily precipitation	52.8 mm (2.1 in)	23 of 100 (Routine)
Newport	United States	Record daily precipitation	62.0 mm (2.4 in)	23 of 100 (Routine)
Water Valley	United States	Record low maximum temperature	25.6 C (78.1 F)	23 of 100 (Routine)
Lamar 7N	United States	Record low maximum temperature	22.2 C (72.0 F)	23 of 100 (Routine)
Cameron	United States	Record low minimum temperature	17.2 C (63.0 F)	23 of 100 (Routine)
Sugar Land	United States	Record low maximum temperature	29.4 C (84.9 F)	23 of 100 (Routine)
Sugar Land	United States	Record low minimum temperature	20.0 C (68.0 F)	23 of 100 (Routine)
Malvan	India	Record daily precipitation	121.9 mm (4.8 in)	22 of 100 (Routine)
Devgad	India	Record daily precipitation	88.9 mm (3.5 in)	22 of 100 (Routine)
Hedrum	Norway	Record daily precipitation	26.4 mm (1.0 in)	22 of 100 (Routine)
Keokuk L&D 19	United States	Record daily precipitation	34.0 mm (1.3 in)	22 of 100 (Routine)
University	United States	Record low maximum temperature	25.0 C (77.0 F)	22 of 100 (Routine)
Marion	United States	Record low minimum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Union City	United States	Record daily precipitation	52.1 mm (2.1 in)	22 of 100 (Routine)
Escalante	United States	Record high maximum temperature	36.1 C (97.0 F)	22 of 100 (Routine)
Humboldt	Canada	Record high minimum temperature	17.2 C (63.0 F)	21 of 100 (Routine)
Zugspitze	Germany	Record daily precipitation	30.1 mm (1.2 in)	21 of 100 (Routine)
Reit Im Winkl	Germany	Record daily precipitation	37.3 mm (1.5 in)	21 of 100 (Routine)
Appleton City	United States	Record low maximum temperature	20.6 C (69.1 F)	21 of 100 (Routine)
Warsaw 1	United States	Record low maximum temperature	21.1 C (70.0 F)	21 of 100 (Routine)
St George	United States	Record high maximum temperature	43.3 C (109.9 F)	21 of 100 (Routine)
Woodbrook	Australia	Record daily precipitation	11.9 mm (0.5 in)	20 of 100 (Routine)
Nossen	Germany	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)

Counts by Type and Timescale

386 records

Records set or tied on 10 August 1940 by type: Highest daily maximum 92, Lowest daily maximum 81, Highest daily minimum 58, Lowest daily minimum 38, Heaviest daily rainfall 117.

Records on 10 August 1940 by type
Record type	Records
Highest daily maximum	92
Lowest daily maximum	81
Highest daily minimum	58
Lowest daily minimum	38
Heaviest daily rainfall	117
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 10 August 1940 by timescale: all-time 2, monthly 6, daily 378.

How Much Records Were Beaten By

297 broken records

Margins by which the 297 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.9. Ties are not counted.

Top 20 by Significance

10 August 1940

Top 20 records on 10 August 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 August 1940	Sogndal - Selseng, NO	daily rain	59.3 mm (2.3 in)	37.3 mm (1.5 in)	31 years	53 of 100 (Notable)
10 August 1940	Gunnaur, IN	daily rain	213.4 mm (8.4 in)	101.9 mm (4.0 in)	26 years	51 of 100 (Notable)
10 August 1940	Anupshahr, IN	daily rain	201.4 mm (7.9 in)	101.6 mm (4.0 in)	26 years	51 of 100 (Notable)
10 August 1940	Melville, US	daily rain	71.1 mm (2.8 in)	45.7 mm (1.8 in)	43 years	47 of 100 (Notable)
10 August 1940	Grenada, US	daily rain	94.0 mm (3.7 in)	60.7 mm (2.4 in)	11 years	40 of 100 (Notable)
10 August 1940	Marseille Obs. Palais-Lonchamp, FR	daily rain	27.8 mm (1.1 in)	25.7 mm (1.0 in)	24 years	39 of 100 (Notable)
10 August 1940	Yarraloola, AU	daily rain	34.0 mm (1.3 in)	28.7 mm (1.1 in)	22 years	38 of 100 (Notable)
10 August 1940	Port Blair, IN	daily rain	119.6 mm (4.7 in)	50.0 mm (2.0 in)	39 years	38 of 100 (Notable)
10 August 1940	Schreiber, CA	all-time high min	20.0 C (68.0 F)	1.7 C (3.1 F)	31 years	37 of 100 (Notable)
10 August 1940	Tasiilaq, GL	daily rain	36.3 mm (1.4 in)	24.5 mm (1.0 in)	21 years	37 of 100 (Notable)
10 August 1940	Vik I Sogn III, NO	daily rain	33.4 mm (1.3 in)	15.6 mm (0.6 in)	17 years	36 of 100 (Notable)
10 August 1940	Dauphin, CA	daily high min	22.8 C (73.0 F)	7.8 C (14.0 F)	33 years	35 of 100 (Notable)
10 August 1940	Sambhal, IN	daily rain	148.1 mm (5.8 in)	75.2 mm (3.0 in)	4 years	35 of 100 (Notable)
10 August 1940	Gopalpur, IN	daily rain	114.3 mm (4.5 in)	47.0 mm (1.9 in)	26 years	33 of 100 (Routine)
10 August 1940	Vicksburg, US	daily rain	56.6 mm (2.2 in)	26.6 mm (1.0 in)	28 years	33 of 100 (Routine)
10 August 1940	Norway House, CA	all-time high min	22.8 C (73.0 F)	0.6 C (1.1 F)	23 years	32 of 100 (Routine)
10 August 1940	Kaufman 3 SE, US	daily low min	15.6 C (60.1 F)	3.8 C (6.8 F)	32 years	31 of 100 (Routine)
10 August 1940	Bijapur, IN	daily rain	25.9 mm (1.0 in)	24.9 mm (1.0 in)	28 years	30 of 100 (Routine)
10 August 1940	Bjornholt, NO	daily rain	39.0 mm (1.5 in)	12.0 mm (0.5 in)	51 years	30 of 100 (Routine)
10 August 1940	Springfield, US	daily rain	57.7 mm (2.3 in)	32.6 mm (1.3 in)	25 years	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

1814 to 1940

Records set or tied on this calendar date in each year from 1814 to 1940. 1940 had 386 records.

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

Records on 08-10 in each year
Year	Records
1814	1
1815	1
1838	1
1845	2
1847	1
1849	1
1852	1
1853	1
1857	2
1859	1
1861	2
1862	2
1863	1
1864	1
1869	2
1871	1
1877	1
1879	4
1881	2
1884	2
1885	1
1886	1
1887	1
1888	1
1890	2
1891	6
1892	1
1893	1
1894	5
1895	1
1896	5
1897	7
1898	4
1899	6
1900	6
1901	5
1902	7
1903	8
1904	12
1905	5
1906	16
1907	9
1908	7
1909	33
1910	10
1911	40
1912	39
1913	44
1914	27
1915	26
1916	88
1917	51
1918	43
1919	51
1920	101
1921	66
1922	78
1923	175
1924	245
1925	430
1926	80
1927	294
1928	160
1929	264
1930	299
1931	424
1932	251
1933	305
1934	662
1935	480
1936	487
1937	399
1938	382
1939	593
1940	386
1941	459
1942	420
1943	304
1944	1,006
1945	360
1946	303
1947	766
1948	339
1949	586
1950	324
1951	425
1952	395
1953	431
1954	372
1955	309
1956	522
1957	322
1958	443
1959	528
1960	470
1961	640
1962	761
1963	479
1964	553
1965	700
1966	1,231
1967	766
1968	784
1969	588
1970	702
1971	760
1972	1,175
1973	597
1974	719
1975	664
1976	855
1977	786
1978	495
1979	700
1980	849
1981	857
1982	1,070
1983	915
1984	956
1985	918
1986	535
1987	896
1988	792
1989	1,291
1990	736
1991	819
1992	1,051
1993	774
1994	1,338
1995	1,119
1996	1,027
1997	1,504
1998	1,112
1999	945
2000	990
2001	1,192
2002	1,080
2003	1,556
2004	976
2005	1,225
2006	980
2007	1,476
2008	871
2009	869
2010	1,704
2011	1,247
2012	995
2013	599
2014	516
2015	583
2016	893
2017	636
2018	1,018
2019	754
2020	816
2021	553
2022	687
2023	782
2024	882
2025	659
2026	1,149

Download the Data

Data for records on 1940-08-10: 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 20	272
20 to 40	18
40 to 60	3
60 to 80	2
80 to 100	0
100 to 120	2