Weather Records on 30 August 1940

346 weather records were set or tied worldwide on 30 August 1940. Highest significance: Marshall, US.

Key Facts for 30 August 1940

On 30 August 1940, 346 weather records were set or tied at long-record stations worldwide.
114 were record highs and 67 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 10 monthly and 334 daily.
Marshall set an all-time record daily precipitation of 153.7 mm (6.1 in) on 30 August 1940.
Across 169 earlier years (1806 to 2026) the same calendar date averaged 424 records.

Record Map

346 stations

346 station records on 30 August 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 August 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Marshall	United States	Record daily precipitation	153.7 mm (6.1 in)	72 of 100 (Major)
Kaanapali AP 453.1	United States	Record daily precipitation	101.9 mm (4.0 in)	63 of 100 (Major)
Jaunpur	India	Record daily precipitation	178.3 mm (7.0 in)	55 of 100 (Notable)
Bryson City 2	United States	Record daily precipitation	114.3 mm (4.5 in)	54 of 100 (Notable)
Highlands	United States	Record daily precipitation	197.1 mm (7.8 in)	54 of 100 (Notable)
Asheville Pearson St	United States	Record daily precipitation	172.2 mm (6.8 in)	53 of 100 (Notable)
Rogersville 1 NE	United States	Record daily precipitation	61.0 mm (2.4 in)	51 of 100 (Notable)
Burnside	United States	Record daily precipitation	67.3 mm (2.6 in)	50 of 100 (Notable)
Bellefontaine	United States	Record daily precipitation	67.3 mm (2.6 in)	49 of 100 (Notable)
Mirzapur	India	Record daily precipitation	238.3 mm (9.4 in)	48 of 100 (Notable)
Kerakat	India	Record daily precipitation	232.7 mm (9.2 in)	46 of 100 (Notable)
Urbana Wrf	United States	Record daily precipitation	55.1 mm (2.2 in)	43 of 100 (Notable)
Machhlisnahr	India	Record daily precipitation	104.1 mm (4.1 in)	42 of 100 (Notable)
Jefferson 2 E	United States	Record daily precipitation	200.7 mm (7.9 in)	42 of 100 (Notable)
Waynesville 1 E	United States	Record daily precipitation	71.6 mm (2.8 in)	40 of 100 (Notable)
Olaa 92	United States	Record daily precipitation	77.5 mm (3.1 in)	40 of 100 (Notable)
Greta Post Office	Australia	Record daily precipitation	27.9 mm (1.1 in)	39 of 100 (Notable)
Kingston	United States	Record daily precipitation	49.5 mm (1.9 in)	39 of 100 (Notable)
Mendota	United States	Record daily precipitation	43.9 mm (1.7 in)	39 of 100 (Notable)
Phulpur	India	Record daily precipitation	99.6 mm (3.9 in)	38 of 100 (Notable)
Mariahu	India	Record daily precipitation	145.3 mm (5.7 in)	38 of 100 (Notable)
Newport 1 NW	United States	Record daily precipitation	54.6 mm (2.1 in)	38 of 100 (Notable)
Georgetown	Canada	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Richmond	United States	Record daily precipitation	55.9 mm (2.2 in)	37 of 100 (Notable)
Delaware	United States	Record daily precipitation	62.2 mm (2.4 in)	37 of 100 (Notable)
Dandridge	United States	Record daily precipitation	55.9 mm (2.2 in)	36 of 100 (Notable)
Warroad	United States	Record daily precipitation	40.6 mm (1.6 in)	35 of 100 (Notable)
Toronto Agincourt	Canada	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
Tranebjerg	Denmark	Record low maximum temperature	10.4 C (50.7 F)	34 of 100 (Routine)
Bluff City	United States	Record daily precipitation	45.7 mm (1.8 in)	33 of 100 (Routine)
Dickson	United States	Record daily precipitation	48.3 mm (1.9 in)	33 of 100 (Routine)
Karchana	India	Record daily precipitation	98.3 mm (3.9 in)	32 of 100 (Routine)
Marion	United States	Record daily precipitation	59.2 mm (2.3 in)	32 of 100 (Routine)
La Grange	United States	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Lucan	Canada	Record daily precipitation	30.5 mm (1.2 in)	31 of 100 (Routine)
Deogaon Lalganj	India	Record daily precipitation	137.9 mm (5.4 in)	31 of 100 (Routine)
Hiram	United States	Record daily precipitation	36.6 mm (1.4 in)	31 of 100 (Routine)
Norwalk Wwtp	United States	Record daily precipitation	48.3 mm (1.9 in)	31 of 100 (Routine)
Edmonton	Canada	Record high maximum temperature	32.2 C (90.0 F)	30 of 100 (Routine)
Paris	Canada	Record daily precipitation	37.6 mm (1.5 in)	30 of 100 (Routine)
Chunar	India	Record daily precipitation	162.1 mm (6.4 in)	30 of 100 (Routine)
Maysville Wwtp	United States	Record daily precipitation	54.1 mm (2.1 in)	30 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record daily precipitation	31.2 mm (1.2 in)	30 of 100 (Routine)
Columbus Ohio St UNIV	United States	Record daily precipitation	51.6 mm (2.0 in)	30 of 100 (Routine)
Waverly	United States	Record daily precipitation	53.6 mm (2.1 in)	30 of 100 (Routine)
Hilo 86A	United States	Record daily precipitation	84.8 mm (3.3 in)	30 of 100 (Routine)
Skegness	United Kingdom	Record high maximum temperature	28.3 C (82.9 F)	29 of 100 (Routine)
Newnan 7 WNW	United States	Record daily precipitation	56.9 mm (2.2 in)	29 of 100 (Routine)
Huntsville	Canada	Record daily precipitation	30.7 mm (1.2 in)	28 of 100 (Routine)
Brantford	Canada	Record high minimum temperature	18.9 C (66.0 F)	28 of 100 (Routine)
Guelph Oac	Canada	Record daily precipitation	28.7 mm (1.1 in)	28 of 100 (Routine)
Soraon	India	Record daily precipitation	101.6 mm (4.0 in)	28 of 100 (Routine)
Isabela Substn	Puerto Rico [United States]	Record daily precipitation	55.1 mm (2.2 in)	28 of 100 (Routine)
Clayton 1 SSW	United States	Record daily precipitation	99.3 mm (3.9 in)	28 of 100 (Routine)
Orillia	Canada	Record daily precipitation	31.0 mm (1.2 in)	27 of 100 (Routine)
Chemnitz	Germany	Record low minimum temperature	3.5 C (38.3 F)	27 of 100 (Routine)
Weissenburg	Germany	Record low maximum temperature	12.5 C (54.5 F)	27 of 100 (Routine)
Mohanlalganj	India	Record daily precipitation	86.6 mm (3.4 in)	27 of 100 (Routine)
Medowie Post Office	Australia	Record daily precipitation	36.1 mm (1.4 in)	26 of 100 (Routine)
Chand	India	Record daily precipitation	127.0 mm (5.0 in)	26 of 100 (Routine)

Counts by Type and Timescale

346 records

Records set or tied on 30 August 1940 by type: Highest daily maximum 61, Lowest daily maximum 45, Highest daily minimum 53, Lowest daily minimum 22, Heaviest daily rainfall 165.

Records on 30 August 1940 by type
Record type	Records
Highest daily maximum	61
Lowest daily maximum	45
Highest daily minimum	53
Lowest daily minimum	22
Heaviest daily rainfall	165
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 August 1940 by timescale: all-time 2, monthly 10, daily 334.

How Much Records Were Beaten By

282 broken records

Margins by which the 282 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 161.3. Ties are not counted.

Top 20 by Significance

30 August 1940

Top 20 records on 30 August 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 1940	Marshall, US	all-time rain	153.7 mm (6.1 in)	62.3 mm (2.5 in)	29 years	72 of 100 (Major)
30 August 1940	Kaanapali AP 453.1, US	monthly rain	101.9 mm (4.0 in)	50.6 mm (2.0 in)	34 years	63 of 100 (Major)
30 August 1940	Jaunpur, IN	daily rain	178.3 mm (7.0 in)	121.9 mm (4.8 in)	39 years	55 of 100 (Notable)
30 August 1940	Bryson City 2, US	monthly rain	114.3 mm (4.5 in)	41.9 mm (1.6 in)	4 years	54 of 100 (Notable)
30 August 1940	Highlands, US	daily rain	197.1 mm (7.8 in)	126.0 mm (5.0 in)	29 years	54 of 100 (Notable)
30 August 1940	Asheville Pearson St, US	monthly rain	172.2 mm (6.8 in)	36.1 mm (1.4 in)	29 years	53 of 100 (Notable)
30 August 1940	Rogersville 1 NE, US	daily rain	61.0 mm (2.4 in)	45.8 mm (1.8 in)	23 years	51 of 100 (Notable)
30 August 1940	Burnside, US	daily rain	67.3 mm (2.6 in)	60.7 mm (2.4 in)	23 years	50 of 100 (Notable)
30 August 1940	Bellefontaine, US	daily rain	67.3 mm (2.6 in)	38.1 mm (1.5 in)	44 years	49 of 100 (Notable)
30 August 1940	Mirzapur, IN	daily rain	238.3 mm (9.4 in)	161.3 mm (6.4 in)	16 years	48 of 100 (Notable)
30 August 1940	Kerakat, IN	monthly rain	232.7 mm (9.2 in)	67.1 mm (2.6 in)	0 years	46 of 100 (Notable)
30 August 1940	Urbana Wrf, US	daily rain	55.1 mm (2.2 in)	40.1 mm (1.6 in)	22 years	43 of 100 (Notable)
30 August 1940	Machhlisnahr, IN	daily rain	104.1 mm (4.1 in)	65.2 mm (2.6 in)	33 years	42 of 100 (Notable)
30 August 1940	Jefferson 2 E, US	all-time rain	200.7 mm (7.9 in)	14.0 mm (0.6 in)	24 years	42 of 100 (Notable)
30 August 1940	Waynesville 1 E, US	daily rain	71.6 mm (2.8 in)	35.0 mm (1.4 in)	7 years	40 of 100 (Notable)
30 August 1940	Olaa 92, US	daily rain	77.5 mm (3.1 in)	47.0 mm (1.9 in)	29 years	40 of 100 (Notable)
30 August 1940	Greta Post Office, AU	daily rain	27.9 mm (1.1 in)	20.3 mm (0.8 in)	38 years	39 of 100 (Notable)
30 August 1940	Kingston, US	daily rain	49.5 mm (1.9 in)	32.2 mm (1.3 in)	21 years	39 of 100 (Notable)
30 August 1940	Mendota, US	daily rain	43.9 mm (1.7 in)	26.4 mm (1.0 in)	37 years	39 of 100 (Notable)
30 August 1940	Phulpur, IN	daily rain	99.6 mm (3.9 in)	56.4 mm (2.2 in)	28 years	38 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

1806 to 1940

Records set or tied on this calendar date in each year from 1806 to 1940. 1940 had 346 records.

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

Records on 08-30 in each year
Year	Records
1806	1
1807	4
1813	1
1814	2
1827	1
1829	1
1835	1
1838	1
1839	1
1845	4
1850	1
1851	2
1855	1
1857	1
1859	1
1864	2
1867	1
1869	1
1870	2
1874	1
1875	2
1876	1
1877	2
1878	1
1880	4
1881	2
1882	1
1884	1
1885	5
1886	7
1887	1
1888	1
1889	2
1890	5
1891	1
1892	3
1893	3
1894	2
1895	1
1896	1
1897	3
1898	3
1899	2
1900	6
1901	8
1902	12
1903	19
1904	13
1905	23
1906	29
1907	8
1908	10
1909	37
1910	15
1911	41
1912	60
1913	22
1914	23
1915	47
1916	17
1917	50
1918	45
1919	17
1920	78
1921	100
1922	65
1923	61
1924	283
1925	167
1926	173
1927	109
1928	327
1929	208
1930	245
1931	192
1932	1,102
1933	274
1934	519
1935	476
1936	191
1937	418
1938	233
1939	401
1940	346
1941	422
1942	385
1943	487
1944	491
1945	455
1946	545
1947	599
1948	519
1949	240
1950	481
1951	1,091
1952	316
1953	1,124
1954	516
1955	417
1956	479
1957	321
1958	363
1959	546
1960	356
1961	573
1962	387
1963	442
1964	422
1965	1,118
1966	500
1967	536
1968	729
1969	522
1970	423
1971	443
1972	579
1973	646
1974	838
1975	664
1976	679
1977	665
1978	825
1979	517
1980	572
1981	684
1982	770
1983	696
1984	1,127
1985	629
1986	1,768
1987	638
1988	881
1989	791
1990	983
1991	938
1992	1,697
1993	1,200
1994	601
1995	940
1996	1,385
1997	960
1998	1,278
1999	864
2000	1,189
2001	750
2002	801
2003	1,226
2004	1,087
2005	1,500
2006	989
2007	1,300
2008	678
2009	1,251
2010	1,552
2011	994
2012	1,087
2013	644
2014	558
2015	1,074
2016	552
2017	924
2018	616
2019	755
2020	671
2021	429
2022	1,077
2023	651
2024	912
2025	324
2026	733

Download the Data

Data for records on 1940-08-30: 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 25	238
25 to 50	33
50 to 75	8
75 to 100	0
100 to 125	1
125 to 150	1
150 to 175	1