Weather Records on 21 August 1930

297 weather records were set or tied worldwide on 21 August 1930. Highest significance: Maryborough, AU.

Key Facts for 21 August 1930

On 21 August 1930, 297 weather records were set or tied at long-record stations worldwide.
60 were record highs and 86 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 10 monthly and 286 daily.
Maryborough set a daily record precipitation of 39.1 mm (1.5 in) on 21 August 1930.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 451 records.

Record Map

297 stations

297 station records on 21 August 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Maryborough	Australia	Record daily precipitation	39.1 mm (1.5 in)	48 of 100 (Notable)
Fulham Park	Australia	Record daily precipitation	47.0 mm (1.9 in)	48 of 100 (Notable)
Sandy Cape Lighthouse	Australia	Record daily precipitation	82.0 mm (3.2 in)	46 of 100 (Notable)
Yandilla	Australia	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Tylden "Tulden"	South Africa	Record daily precipitation	36.1 mm (1.4 in)	45 of 100 (Notable)
Booleroo Centre (Willowie)	Australia	Record daily precipitation	25.1 mm (1.0 in)	44 of 100 (Notable)
Woomera (Arcoona)	Australia	Record daily precipitation	25.7 mm (1.0 in)	41 of 100 (Notable)
Elizabethton	United States	Record daily precipitation	58.4 mm (2.3 in)	41 of 100 (Notable)
Boonara	Australia	Record daily precipitation	26.7 mm (1.1 in)	40 of 100 (Notable)
Tilpa (Warloo)	Australia	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Oranjerivier (Sar)	South Africa	Record daily precipitation	32.3 mm (1.3 in)	40 of 100 (Notable)
Syfergat (Sar)	South Africa	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Santee	United States	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Rogersville 1 NE	United States	Record low maximum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Asheville	United States	Record low maximum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Thomas River (Sar)	South Africa	Record daily precipitation	26.2 mm (1.0 in)	31 of 100 (Routine)
Haparanda	Sweden	Record high maximum temperature	28.5 C (83.3 F)	31 of 100 (Routine)
Kilkivan Post Office	Australia	Record daily precipitation	33.8 mm (1.3 in)	30 of 100 (Routine)
Pialba Post Office	Australia	Record daily precipitation	36.8 mm (1.4 in)	30 of 100 (Routine)
Millmerran Post Office	Australia	Record daily precipitation	29.7 mm (1.2 in)	29 of 100 (Routine)
Waynesville 1 E	United States	Record daily precipitation	25.9 mm (1.0 in)	29 of 100 (Routine)
Arhangelsk	Russia	Record high minimum temperature	19.0 C (66.2 F)	28 of 100 (Routine)
Lady Grey (Pol)	South Africa	Record daily precipitation	28.7 mm (1.1 in)	28 of 100 (Routine)
Norfolk	United States	Record daily precipitation	37.3 mm (1.5 in)	28 of 100 (Routine)
Inskip Point Lighthouse	Australia	Record daily precipitation	53.8 mm (2.1 in)	27 of 100 (Routine)
Sterkstroom (Pol)	South Africa	Record daily precipitation	28.2 mm (1.1 in)	26 of 100 (Routine)
Rogersville 1 NE	United States	Record daily precipitation	35.1 mm (1.4 in)	26 of 100 (Routine)
Biser	Russia	Record high minimum temperature	17.9 C (64.2 F)	24 of 100 (Routine)
Buffelsnek (Bos)	South Africa	Record daily precipitation	26.9 mm (1.1 in)	24 of 100 (Routine)
Clayton 1 SSW	United States	Record low maximum temperature	17.8 C (64.0 F)	24 of 100 (Routine)
Tashkent	Uzbekistan	Record low maximum temperature	22.7 C (72.9 F)	24 of 100 (Routine)
Kargopol	Russia	Record high minimum temperature	18.1 C (64.6 F)	23 of 100 (Routine)
Galway	Ireland	Record low maximum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Beaufort Wwtp	United States	Record low minimum temperature	16.1 C (61.0 F)	22 of 100 (Routine)
Mackay Post Office	Australia	Record high minimum temperature	20.4 C (68.7 F)	21 of 100 (Routine)
St. Petersburg	Russia	Record high minimum temperature	19.1 C (66.4 F)	21 of 100 (Routine)
Millwood (Bos)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	21 of 100 (Routine)
Marietta Wtr Wks	United States	Record low maximum temperature	19.4 C (66.9 F)	21 of 100 (Routine)
Coondambo	Australia	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Bookaloo	Australia	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Carrieton (Yanyarrie)	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Maytown	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Gatcombe Head	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Seymour (Mag)	South Africa	Record daily precipitation	18.8 mm (0.7 in)	20 of 100 (Routine)
Bruce	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Quorn (Round Hill)	Australia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Middleton (Sar)	South Africa	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Broken Hill (Topar)	Australia	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Goudveld (Bos)	South Africa	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Johnburgh Post Office	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Kieskamahoek (Pol)	South Africa	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Stuarts Creek	Australia	Record daily precipitation	3.3 mm (0.13 in)	20 of 100 (Routine)
Walsingham 1	South Africa	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Cradock (Kanyaka)	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Cathcart	South Africa	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Pratten	Australia	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Dutson	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Burnett Heads Niell St	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Warra Post Office	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Broken Hill (Kars)	Australia	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)

Counts by Type and Timescale

297 records

Records set or tied on 21 August 1930 by type: Highest daily maximum 26, Lowest daily maximum 56, Highest daily minimum 34, Lowest daily minimum 30, Heaviest daily rainfall 151.

Records on 21 August 1930 by type
Record type	Records
Highest daily maximum	26
Lowest daily maximum	56
Highest daily minimum	34
Lowest daily minimum	30
Heaviest daily rainfall	151
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1930 by timescale: all-time 1, monthly 10, daily 286.

How Much Records Were Beaten By

249 broken records

Margins by which the 249 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 64.2. Ties are not counted.

Top 20 by Significance

21 August 1930

Top 20 records on 21 August 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1930	Maryborough, AU	daily rain	39.1 mm (1.5 in)	34.0 mm (1.3 in)	28 years	48 of 100 (Notable)
21 August 1930	Fulham Park, AU	daily rain	47.0 mm (1.9 in)	33.0 mm (1.3 in)	35 years	48 of 100 (Notable)
21 August 1930	Sandy Cape Lighthouse, AU	daily rain	82.0 mm (3.2 in)	64.2 mm (2.5 in)	7 years	46 of 100 (Notable)
21 August 1930	Yandilla, AU	daily rain	34.0 mm (1.3 in)	25.6 mm (1.0 in)	35 years	45 of 100 (Notable)
21 August 1930	Tylden "Tulden", ZA	daily rain	36.1 mm (1.4 in)	27.2 mm (1.1 in)	24 years	45 of 100 (Notable)
21 August 1930	Booleroo Centre (Willowie), AU	daily rain	25.1 mm (1.0 in)	19.3 mm (0.8 in)	12 years	44 of 100 (Notable)
21 August 1930	Woomera (Arcoona), AU	daily rain	25.7 mm (1.0 in)	18.8 mm (0.7 in)	21 years	41 of 100 (Notable)
21 August 1930	Elizabethton, US	daily rain	58.4 mm (2.3 in)	30.0 mm (1.2 in)	34 years	41 of 100 (Notable)
21 August 1930	Boonara, AU	daily rain	26.7 mm (1.1 in)	22.4 mm (0.9 in)	32 years	40 of 100 (Notable)
21 August 1930	Tilpa (Warloo), AU	daily rain	29.2 mm (1.1 in)	19.0 mm (0.7 in)	35 years	40 of 100 (Notable)
21 August 1930	Oranjerivier (Sar), ZA	daily rain	32.3 mm (1.3 in)	29.8 mm (1.2 in)	25 years	40 of 100 (Notable)
21 August 1930	Syfergat (Sar), ZA	daily rain	38.1 mm (1.5 in)	26.4 mm (1.0 in)	7 years	38 of 100 (Notable)
21 August 1930	Santee, US	daily rain	50.0 mm (2.0 in)	30.4 mm (1.2 in)	25 years	36 of 100 (Notable)
21 August 1930	Rogersville 1 NE, US	monthly low max	18.9 C (66.0 F)	2.8 C (5.0 F)	33 years	32 of 100 (Routine)
21 August 1930	Asheville, US	monthly low max	17.2 C (63.0 F)	0.6 C (1.1 F)	50 years	32 of 100 (Routine)
21 August 1930	Thomas River (Sar), ZA	daily rain	26.2 mm (1.0 in)	13.2 mm (0.5 in)	24 years	31 of 100 (Routine)
21 August 1930	Haparanda, SE	daily high max	28.5 C (83.3 F)	4.5 C (8.1 F)	47 years	31 of 100 (Routine)
21 August 1930	Kilkivan Post Office, AU	daily rain	33.8 mm (1.3 in)	17.3 mm (0.7 in)	35 years	30 of 100 (Routine)
21 August 1930	Pialba Post Office, AU	daily rain	36.8 mm (1.4 in)	29.9 mm (1.2 in)	7 years	30 of 100 (Routine)
21 August 1930	Millmerran Post Office, AU	daily rain	29.7 mm (1.2 in)	21.3 mm (0.8 in)	20 years	29 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

1800 to 1930

Records set or tied on this calendar date in each year from 1800 to 1930. 1930 had 297 records.

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

Records on 08-21 in each year
Year	Records
1800	1
1802	1
1804	1
1807	1
1816	1
1818	1
1832	1
1834	1
1839	3
1843	1
1847	1
1849	3
1850	1
1851	2
1863	1
1866	1
1867	2
1870	3
1871	2
1872	1
1873	1
1876	1
1877	2
1879	2
1884	2
1885	5
1886	1
1887	5
1888	2
1889	3
1890	4
1891	2
1893	4
1894	8
1895	3
1896	2
1897	4
1898	4
1899	7
1900	4
1901	9
1902	8
1903	6
1904	8
1905	4
1906	22
1907	20
1908	13
1909	17
1910	33
1911	19
1912	50
1913	37
1914	24
1915	21
1916	106
1917	101
1918	202
1919	19
1920	59
1921	34
1922	58
1923	111
1924	135
1925	220
1926	227
1927	228
1928	110
1929	234
1930	297
1931	277
1932	264
1933	328
1934	320
1935	318
1936	807
1937	762
1938	239
1939	630
1940	683
1941	180
1942	415
1943	438
1944	346
1945	544
1946	390
1947	954
1948	305
1949	508
1950	958
1951	699
1952	368
1953	331
1954	497
1955	885
1956	701
1957	490
1958	389
1959	704
1960	490
1961	644
1962	469
1963	338
1964	794
1965	455
1966	661
1967	541
1968	1,014
1969	650
1970	373
1971	660
1972	441
1973	438
1974	564
1975	545
1976	756
1977	764
1978	445
1979	778
1980	904
1981	1,015
1982	769
1983	1,407
1984	975
1985	623
1986	1,166
1987	740
1988	889
1989	828
1990	910
1991	828
1992	957
1993	698
1994	968
1995	962
1996	950
1997	1,291
1998	948
1999	717
2000	861
2001	797
2002	965
2003	1,241
2004	1,585
2005	1,071
2006	797
2007	1,829
2008	1,012
2009	1,319
2010	1,155
2011	1,022
2012	990
2013	513
2014	624
2015	651
2016	890
2017	347
2018	816
2019	631
2020	1,147
2021	767
2022	917
2023	1,826
2024	777
2025	1,230
2026	1,289

Download the Data

Data for records on 1930-08-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	205
10 to 20	28
20 to 30	11
30 to 40	4
40 to 50	0
50 to 60	0
60 to 70	1