Weather Records on 15 August 1940

372 weather records were set or tied worldwide on 15 August 1940. Highest significance: Clarksville, US.

Key Facts for 15 August 1940

On 15 August 1940, 372 weather records were set or tied at long-record stations worldwide.
108 were record highs and 70 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 7 monthly and 362 daily.
Clarksville set an all-time record daily precipitation of 210.1 mm (8.3 in) on 15 August 1940.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 455 records.

Record Map

372 stations

372 station records on 15 August 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Clarksville	United States	Record daily precipitation	210.1 mm (8.3 in)	78 of 100 (Major)
Callaville	United States	Record daily precipitation	176.0 mm (6.9 in)	64 of 100 (Major)
Tarboro 1 S	United States	Record daily precipitation	166.4 mm (6.6 in)	63 of 100 (Major)
Florence #1	United States	Record daily precipitation	169.7 mm (6.7 in)	60 of 100 (Major)
Mariyna Gorka	Belarus	Record daily precipitation	47.8 mm (1.9 in)	57 of 100 (Notable)
Darlington	United States	Record daily precipitation	93.2 mm (3.7 in)	56 of 100 (Notable)
Randolph 5 NNE	United States	Record daily precipitation	175.3 mm (6.9 in)	56 of 100 (Notable)
Richmond City Locks	United States	Record daily precipitation	94.2 mm (3.7 in)	54 of 100 (Notable)
Weldon	United States	Record daily precipitation	132.6 mm (5.2 in)	53 of 100 (Notable)
Aramboly	India	Record daily precipitation	41.1 mm (1.6 in)	52 of 100 (Notable)
Lynchburg 7 St Brg	United States	Record daily precipitation	91.9 mm (3.6 in)	51 of 100 (Notable)
Richmond Chimborazo Pk	United States	Record daily precipitation	87.4 mm (3.4 in)	50 of 100 (Notable)
Dhandhuka	India	Record daily precipitation	126.2 mm (5.0 in)	49 of 100 (Notable)
Palitana	India	Record daily precipitation	63.5 mm (2.5 in)	49 of 100 (Notable)
Diamond Springs	United States	Record daily precipitation	115.1 mm (4.5 in)	48 of 100 (Notable)
Gogha	India	Record daily precipitation	121.9 mm (4.8 in)	47 of 100 (Notable)
Enfield	United States	Record daily precipitation	133.4 mm (5.3 in)	47 of 100 (Notable)
Haskell	United States	Record daily precipitation	76.2 mm (3.0 in)	46 of 100 (Notable)
Songadh	India	Record daily precipitation	86.4 mm (3.4 in)	45 of 100 (Notable)
Velikie Luki	Russia	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Columbia 2SSE	United States	Record daily precipitation	75.9 mm (3.0 in)	44 of 100 (Notable)
Yellavaram	India	Record daily precipitation	110.0 mm (4.3 in)	42 of 100 (Notable)
Louisburg	United States	Record daily precipitation	82.0 mm (3.2 in)	42 of 100 (Notable)
Radford	United States	Record daily precipitation	53.1 mm (2.1 in)	42 of 100 (Notable)
Scotland Neck	United States	Record daily precipitation	155.7 mm (6.1 in)	41 of 100 (Notable)
Goldsboro 4 SE	United States	Record daily precipitation	63.5 mm (2.5 in)	41 of 100 (Notable)
Charlottesville 2W	United States	Record daily precipitation	64.0 mm (2.5 in)	39 of 100 (Notable)
Rocky Mt	United States	Record daily precipitation	126.5 mm (5.0 in)	37 of 100 (Notable)
Buchanan	United States	Record daily precipitation	69.9 mm (2.8 in)	37 of 100 (Notable)
Henderson 2 NNW	United States	Record daily precipitation	71.9 mm (2.8 in)	36 of 100 (Notable)
Wichita Falls Muni AP	United States	Record daily precipitation	53.3 mm (2.1 in)	36 of 100 (Notable)
Vagra	India	Record daily precipitation	122.7 mm (4.8 in)	34 of 100 (Routine)
Camden 3 W	United States	Record daily precipitation	62.7 mm (2.5 in)	34 of 100 (Routine)
Effingham	United States	Record daily precipitation	79.8 mm (3.1 in)	34 of 100 (Routine)
Mudigere	India	Record daily precipitation	71.1 mm (2.8 in)	33 of 100 (Routine)
Telhara	India	Record daily precipitation	45.5 mm (1.8 in)	33 of 100 (Routine)
Bajan	India	Record daily precipitation	77.5 mm (3.1 in)	32 of 100 (Routine)
Shikarpur	India	Record daily precipitation	37.6 mm (1.5 in)	32 of 100 (Routine)
Salisbury	United States	Record daily precipitation	57.7 mm (2.3 in)	32 of 100 (Routine)
Coleman	United States	Record daily precipitation	76.2 mm (3.0 in)	32 of 100 (Routine)
Wadhwan	India	Record daily precipitation	49.3 mm (1.9 in)	31 of 100 (Routine)
Wilmington Wb City	United States	Record daily precipitation	62.7 mm (2.5 in)	31 of 100 (Routine)
Roanoke	United States	Record daily precipitation	63.5 mm (2.5 in)	31 of 100 (Routine)
Dholera	India	Record daily precipitation	86.4 mm (3.4 in)	30 of 100 (Routine)
Ankola	India	Record daily precipitation	112.8 mm (4.4 in)	30 of 100 (Routine)
Ratlam	India	Record daily precipitation	97.0 mm (3.8 in)	30 of 100 (Routine)
Pali	India	Record daily precipitation	70.1 mm (2.8 in)	30 of 100 (Routine)
Union 3 SSE	United States	Record low maximum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Jambusar	India	Record daily precipitation	93.2 mm (3.7 in)	29 of 100 (Routine)
Sanand	India	Record daily precipitation	106.7 mm (4.2 in)	28 of 100 (Routine)
Burnett Heads Niell St	Australia	Record daily precipitation	26.7 mm (1.1 in)	27 of 100 (Routine)
Eureka 1E	United States	Record daily precipitation	63.0 mm (2.5 in)	27 of 100 (Routine)
Smithfield	United States	Record daily precipitation	113.0 mm (4.4 in)	27 of 100 (Routine)
New Canton	United States	Record daily precipitation	68.1 mm (2.7 in)	27 of 100 (Routine)
Ranpur	India	Record daily precipitation	59.7 mm (2.4 in)	26 of 100 (Routine)
Bhaunagar	India	Record daily precipitation	83.1 mm (3.3 in)	26 of 100 (Routine)
Umbergaon	India	Record daily precipitation	81.3 mm (3.2 in)	26 of 100 (Routine)
Beaufort	United States	Record daily precipitation	50.8 mm (2.0 in)	26 of 100 (Routine)
Belhaven 1 SE	United States	Record daily precipitation	50.8 mm (2.0 in)	26 of 100 (Routine)
Amod	India	Record daily precipitation	73.2 mm (2.9 in)	25 of 100 (Routine)

Counts by Type and Timescale

372 records

Records set or tied on 15 August 1940 by type: Highest daily maximum 41, Lowest daily maximum 50, Highest daily minimum 67, Lowest daily minimum 20, Heaviest daily rainfall 194.

Records on 15 August 1940 by type
Record type	Records
Highest daily maximum	41
Lowest daily maximum	50
Highest daily minimum	67
Lowest daily minimum	20
Heaviest daily rainfall	194
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1940 by timescale: all-time 3, monthly 7, daily 362.

How Much Records Were Beaten By

290 broken records

Margins by which the 290 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 113.5. Ties are not counted.

Top 20 by Significance

15 August 1940

Top 20 records on 15 August 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1940	Clarksville, US	all-time rain	210.1 mm (8.3 in)	100.9 mm (4.0 in)	44 years	78 of 100 (Major)
15 August 1940	Callaville, US	all-time rain	176.0 mm (6.9 in)	46.5 mm (1.8 in)	37 years	64 of 100 (Major)
15 August 1940	Tarboro 1 S, US	monthly rain	166.4 mm (6.6 in)	52.6 mm (2.1 in)	45 years	63 of 100 (Major)
15 August 1940	Florence #1, US	monthly rain	169.7 mm (6.7 in)	51.6 mm (2.0 in)	38 years	60 of 100 (Major)
15 August 1940	Mariyna Gorka, BY	daily rain	47.8 mm (1.9 in)	29.7 mm (1.2 in)	44 years	57 of 100 (Notable)
15 August 1940	Darlington, US	daily rain	93.2 mm (3.7 in)	74.1 mm (2.9 in)	40 years	56 of 100 (Notable)
15 August 1940	Randolph 5 NNE, US	all-time rain	175.3 mm (6.9 in)	40.7 mm (1.6 in)	24 years	56 of 100 (Notable)
15 August 1940	Richmond City Locks, US	daily rain	94.2 mm (3.7 in)	62.7 mm (2.5 in)	41 years	54 of 100 (Notable)
15 August 1940	Weldon, US	daily rain	132.6 mm (5.2 in)	77.0 mm (3.0 in)	26 years	53 of 100 (Notable)
15 August 1940	Aramboly, IN	daily rain	41.1 mm (1.6 in)	35.8 mm (1.4 in)	28 years	52 of 100 (Notable)
15 August 1940	Lynchburg 7 St Brg, US	daily rain	91.9 mm (3.6 in)	72.1 mm (2.8 in)	29 years	51 of 100 (Notable)
15 August 1940	Richmond Chimborazo Pk, US	daily rain	87.4 mm (3.4 in)	60.2 mm (2.4 in)	32 years	50 of 100 (Notable)
15 August 1940	Dhandhuka, IN	daily rain	126.2 mm (5.0 in)	113.5 mm (4.5 in)	17 years	49 of 100 (Notable)
15 August 1940	Palitana, IN	daily rain	63.5 mm (2.5 in)	50.8 mm (2.0 in)	24 years	49 of 100 (Notable)
15 August 1940	Diamond Springs, US	daily rain	115.1 mm (4.5 in)	87.2 mm (3.4 in)	19 years	48 of 100 (Notable)
15 August 1940	Gogha, IN	daily rain	121.9 mm (4.8 in)	88.1 mm (3.5 in)	13 years	47 of 100 (Notable)
15 August 1940	Enfield, US	daily rain	133.4 mm (5.3 in)	102.9 mm (4.1 in)	15 years	47 of 100 (Notable)
15 August 1940	Haskell, US	daily rain	76.2 mm (3.0 in)	64.8 mm (2.6 in)	8 years	46 of 100 (Notable)
15 August 1940	Songadh, IN	daily rain	86.4 mm (3.4 in)	73.7 mm (2.9 in)	6 years	45 of 100 (Notable)
15 August 1940	Velikie Luki, RU	daily rain	34.0 mm (1.3 in)	20.5 mm (0.8 in)	32 years	45 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

1793 to 1940

Records set or tied on this calendar date in each year from 1793 to 1940. 1940 had 372 records.

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

Records on 08-15 in each year
Year	Records
1793	2
1802	1
1805	1
1812	1
1821	1
1838	2
1839	1
1841	1
1844	1
1845	3
1852	1
1854	1
1856	1
1858	1
1861	3
1867	1
1868	2
1869	1
1873	2
1875	1
1876	2
1877	1
1878	1
1879	1
1880	3
1881	2
1882	2
1883	1
1884	2
1885	3
1886	1
1887	1
1888	3
1890	2
1891	2
1892	3
1893	3
1895	1
1896	9
1897	3
1898	1
1899	2
1900	6
1901	5
1902	10
1903	5
1904	17
1905	26
1906	8
1907	14
1908	15
1909	30
1910	16
1911	26
1912	34
1913	42
1914	11
1915	26
1916	223
1917	32
1918	23
1919	22
1920	59
1921	55
1922	86
1923	116
1924	220
1925	91
1926	115
1927	223
1928	271
1929	586
1930	274
1931	351
1932	368
1933	268
1934	992
1935	414
1936	867
1937	574
1938	681
1939	450
1940	372
1941	289
1942	377
1943	426
1944	610
1945	433
1946	285
1947	559
1948	366
1949	559
1950	317
1951	597
1952	596
1953	449
1954	481
1955	539
1956	390
1957	355
1958	1,092
1959	515
1960	417
1961	704
1962	1,052
1963	972
1964	1,185
1965	535
1966	340
1967	687
1968	1,002
1969	583
1970	382
1971	899
1972	613
1973	499
1974	512
1975	490
1976	1,345
1977	550
1978	841
1979	1,788
1980	745
1981	588
1982	479
1983	955
1984	622
1985	915
1986	1,283
1987	1,098
1988	1,479
1989	495
1990	758
1991	778
1992	1,638
1993	831
1994	1,073
1995	1,298
1996	929
1997	927
1998	861
1999	956
2000	932
2001	1,254
2002	1,307
2003	1,248
2004	1,424
2005	1,067
2006	923
2007	1,317
2008	964
2009	1,038
2010	1,622
2011	770
2012	654
2013	711
2014	583
2015	759
2016	707
2017	532
2018	328
2019	435
2020	1,327
2021	900
2022	692
2023	1,414
2024	729
2025	772
2026	975

Download the Data

Data for records on 1940-08-15: 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	223
20 to 40	33
40 to 60	22
60 to 80	7
80 to 100	2
100 to 120	3