Weather Records on 21 August 1933

328 weather records were set or tied worldwide on 21 August 1933. Highest significance: Chinook, US.

Key Facts for 21 August 1933

On 21 August 1933, 328 weather records were set or tied at long-record stations worldwide.
35 were record highs and 78 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 18 monthly and 306 daily.
Chinook set a monthly record daily precipitation of 83.6 mm (3.3 in) on 21 August 1933.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 451 records.

Record Map

328 stations

328 station records on 21 August 1933 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1933: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chinook	United States	Record daily precipitation	83.6 mm (3.3 in)	53 of 100 (Notable)
Havre Wb City	United States	Record daily precipitation	39.9 mm (1.6 in)	53 of 100 (Notable)
Bethany	United States	Record daily precipitation	88.6 mm (3.5 in)	52 of 100 (Notable)
Great Falls 16St	United States	Record daily precipitation	69.1 mm (2.7 in)	52 of 100 (Notable)
Butte Bert Mooney AP	United States	Record daily precipitation	35.6 mm (1.4 in)	52 of 100 (Notable)
Chattarpur	India	Record daily precipitation	205.7 mm (8.1 in)	51 of 100 (Notable)
Atlantic City Marina	United States	Record daily precipitation	206.2 mm (8.1 in)	51 of 100 (Notable)
Mingela Post Office	Australia	Record daily precipitation	37.1 mm (1.5 in)	50 of 100 (Notable)
Asthawan	India	Record daily precipitation	129.5 mm (5.1 in)	50 of 100 (Notable)
Budapest	Hungary	Record daily precipitation	35.1 mm (1.4 in)	49 of 100 (Notable)
Alur	India	Record daily precipitation	81.5 mm (3.2 in)	49 of 100 (Notable)
Bhabua	India	Record daily precipitation	274.8 mm (10.8 in)	48 of 100 (Notable)
Sindgi	India	Record daily precipitation	95.3 mm (3.8 in)	47 of 100 (Notable)
Suri	India	Record daily precipitation	99.6 mm (3.9 in)	47 of 100 (Notable)
Bridgeville 1 NW	United States	Record daily precipitation	161.0 mm (6.3 in)	47 of 100 (Notable)
Sherthala	India	Record daily precipitation	91.4 mm (3.6 in)	40 of 100 (Notable)
Millsboro	United States	Record daily precipitation	133.4 mm (5.3 in)	40 of 100 (Notable)
Purnea	India	Record daily precipitation	132.1 mm (5.2 in)	39 of 100 (Notable)
Bundaberg Post Office	Australia	Record low maximum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Orlando Executive AP	United States	Record daily precipitation	79.0 mm (3.1 in)	38 of 100 (Notable)
Kampli	India	Record daily precipitation	63.5 mm (2.5 in)	37 of 100 (Notable)
Bagewadi	India	Record daily precipitation	73.4 mm (2.9 in)	36 of 100 (Notable)
Graz	Austria	Record daily precipitation	49.2 mm (1.9 in)	35 of 100 (Notable)
Ovando	United States	Record daily precipitation	30.2 mm (1.2 in)	35 of 100 (Notable)
Szombathely	Hungary	Record daily precipitation	41.1 mm (1.6 in)	34 of 100 (Routine)
Krishnarajnagar	India	Record daily precipitation	43.9 mm (1.7 in)	34 of 100 (Routine)
Akot	India	Record daily precipitation	70.1 mm (2.8 in)	34 of 100 (Routine)
Bathurst Gaol	Australia	Record low minimum temperature	-5.0 C (23.0 F)	31 of 100 (Routine)
Bangalore	India	Record daily precipitation	67.3 mm (2.6 in)	31 of 100 (Routine)
Ljubljana Bezigrad	Slovenia	Record daily precipitation	68.4 mm (2.7 in)	31 of 100 (Routine)
Wray	United States	Record daily precipitation	29.5 mm (1.2 in)	31 of 100 (Routine)
Bourke Post Office	Australia	Record low maximum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Baltimore Customs House	United States	Record daily precipitation	66.8 mm (2.6 in)	30 of 100 (Routine)
Bikram	India	Record daily precipitation	87.9 mm (3.5 in)	29 of 100 (Routine)
Siruguppa	India	Record daily precipitation	83.1 mm (3.3 in)	29 of 100 (Routine)
Ettumanur	India	Record daily precipitation	120.7 mm (4.8 in)	29 of 100 (Routine)
Canyon Ferry	United States	Record daily precipitation	43.7 mm (1.7 in)	29 of 100 (Routine)
Ketty	India	Record daily precipitation	43.2 mm (1.7 in)	28 of 100 (Routine)
Coleman 3 WNW	United States	Record daily precipitation	56.4 mm (2.2 in)	28 of 100 (Routine)
Cascade 5 S	United States	Record daily precipitation	51.1 mm (2.0 in)	28 of 100 (Routine)
Banana Post Office	Australia	Record daily precipitation	25.4 mm (1.0 in)	27 of 100 (Routine)
Wien	Austria	Record daily precipitation	25.3 mm (1.0 in)	27 of 100 (Routine)
Greenfield	United States	Record daily precipitation	125.2 mm (4.9 in)	27 of 100 (Routine)
Aliganj	India	Record daily precipitation	47.0 mm (1.9 in)	26 of 100 (Routine)
Miami	United States	Record daily precipitation	43.7 mm (1.7 in)	26 of 100 (Routine)
Butte Bert Mooney AP	United States	Record low maximum temperature	6.7 C (44.1 F)	26 of 100 (Routine)
Helena Wb City	United States	Record low maximum temperature	8.3 C (46.9 F)	26 of 100 (Routine)
Gayndah Post Office	Australia	Record low maximum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Vaikom	India	Record daily precipitation	81.8 mm (3.2 in)	25 of 100 (Routine)
Bolpur	India	Record daily precipitation	76.2 mm (3.0 in)	25 of 100 (Routine)
Crescent City 3 NNW	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
Mt Ayr	United States	Record daily precipitation	50.8 mm (2.0 in)	25 of 100 (Routine)
Fairbury 7S	United States	Record daily precipitation	43.9 mm (1.7 in)	25 of 100 (Routine)
W Pt	United States	Record low maximum temperature	18.9 C (66.0 F)	25 of 100 (Routine)
St John's	Canada	Record high minimum temperature	17.8 C (64.0 F)	24 of 100 (Routine)
Drobeta Turnu Severin	Romania	Record high maximum temperature	40.5 C (104.9 F)	24 of 100 (Routine)
Millington 1 SE	United States	Record daily precipitation	68.1 mm (2.7 in)	24 of 100 (Routine)
Grant City	United States	Record daily precipitation	58.4 mm (2.3 in)	24 of 100 (Routine)
Mc Cook	United States	Record daily precipitation	26.7 mm (1.1 in)	24 of 100 (Routine)
Pawhuska	United States	Record daily precipitation	64.5 mm (2.5 in)	24 of 100 (Routine)

Counts by Type and Timescale

328 records

Records set or tied on 21 August 1933 by type: Highest daily maximum 11, Lowest daily maximum 58, Highest daily minimum 24, Lowest daily minimum 20, Heaviest daily rainfall 214, Heaviest daily snowfall 1.

Records on 21 August 1933 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	58
Highest daily minimum	24
Lowest daily minimum	20
Heaviest daily rainfall	214
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 21 August 1933 by timescale: all-time 4, monthly 18, daily 306.

How Much Records Were Beaten By

276 broken records

Margins by which the 276 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 184.4. Ties are not counted.

Top 20 by Significance

21 August 1933

Top 20 records on 21 August 1933 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1933	Chinook, US	monthly rain	83.6 mm (3.3 in)	45.0 mm (1.8 in)	0 years	53 of 100 (Notable)
21 August 1933	Havre Wb City, US	daily rain	39.9 mm (1.6 in)	25.9 mm (1.0 in)	27 years	53 of 100 (Notable)
21 August 1933	Bethany, US	daily rain	88.6 mm (3.5 in)	58.9 mm (2.3 in)	32 years	52 of 100 (Notable)
21 August 1933	Great Falls 16St, US	monthly rain	69.1 mm (2.7 in)	24.6 mm (1.0 in)	0 years	52 of 100 (Notable)
21 August 1933	Butte Bert Mooney AP, US	monthly rain	35.6 mm (1.4 in)	12.7 mm (0.5 in)	34 years	52 of 100 (Notable)
21 August 1933	Chattarpur, IN	daily rain	205.7 mm (8.1 in)	142.2 mm (5.6 in)	28 years	51 of 100 (Notable)
21 August 1933	Atlantic City Marina, US	daily rain	206.2 mm (8.1 in)	184.4 mm (7.3 in)	19 years	51 of 100 (Notable)
21 August 1933	Mingela Post Office, AU	daily rain	37.1 mm (1.5 in)	37.1 mm (1.5 in)	33 years	50 of 100 (Notable)
21 August 1933	Asthawan, IN	daily rain	129.5 mm (5.1 in)	80.0 mm (3.1 in)	28 years	50 of 100 (Notable)
21 August 1933	Budapest, HU	daily rain	35.1 mm (1.4 in)	31.3 mm (1.2 in)	20 years	49 of 100 (Notable)
21 August 1933	Alur, IN	daily rain	81.5 mm (3.2 in)	59.1 mm (2.3 in)	28 years	49 of 100 (Notable)
21 August 1933	Bhabua, IN	all-time rain	274.8 mm (10.8 in)	43.2 mm (1.7 in)	24 years	48 of 100 (Notable)
21 August 1933	Sindgi, IN	monthly rain	95.3 mm (3.8 in)	30.3 mm (1.2 in)	29 years	47 of 100 (Notable)
21 August 1933	Suri, IN	daily rain	99.6 mm (3.9 in)	70.4 mm (2.8 in)	15 years	47 of 100 (Notable)
21 August 1933	Bridgeville 1 NW, US	all-time rain	161.0 mm (6.3 in)	20.3 mm (0.8 in)	34 years	47 of 100 (Notable)
21 August 1933	Sherthala, IN	daily rain	91.4 mm (3.6 in)	49.2 mm (1.9 in)	27 years	40 of 100 (Notable)
21 August 1933	Millsboro, US	all-time rain	133.4 mm (5.3 in)	15.3 mm (0.6 in)	27 years	40 of 100 (Notable)
21 August 1933	Purnea, IN	daily rain	132.1 mm (5.2 in)	82.1 mm (3.2 in)	0 years	39 of 100 (Notable)
21 August 1933	Bundaberg Post Office, AU	daily low max	15.6 C (60.1 F)	5.0 C (9.0 F)	32 years	38 of 100 (Notable)
21 August 1933	Orlando Executive AP, US	daily rain	79.0 mm (3.1 in)	42.9 mm (1.7 in)	12 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

1800 to 1933

Records set or tied on this calendar date in each year from 1800 to 1933. 1933 had 328 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 1933-08-21: 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 25	236
25 to 50	32
50 to 75	4
75 to 100	2
100 to 125	0
125 to 150	1
150 to 175	0
175 to 200	1