Weather Records on 20 August 1933

324 weather records were set or tied worldwide on 20 August 1933. Highest significance: Helena Wb City, US.

Key Facts for 20 August 1933

On 20 August 1933, 324 weather records were set or tied at long-record stations worldwide.
47 were record highs and 82 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 318 daily.
Helena Wb City set a monthly record daily precipitation of 48.0 mm (1.9 in) on 20 August 1933.
Across 163 earlier years (1797 to 2026) the same calendar date averaged 456 records.

Record Map

324 stations

324 station records on 20 August 1933 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 August 1933: highest significance records shown on the map
Station	Country	Type	Value	Significance
Helena Wb City	United States	Record daily precipitation	48.0 mm (1.9 in)	57 of 100 (Notable)
Barharwa	India	Record daily precipitation	172.7 mm (6.8 in)	49 of 100 (Notable)
Sampagaon-Bailh	India	Record daily precipitation	76.2 mm (3.0 in)	46 of 100 (Notable)
Tasgaon	India	Record daily precipitation	69.1 mm (2.7 in)	46 of 100 (Notable)
Shimoga	India	Record daily precipitation	53.1 mm (2.1 in)	43 of 100 (Notable)
Buxar	India	Record daily precipitation	114.3 mm (4.5 in)	41 of 100 (Notable)
Jagalur	India	Record daily precipitation	46.7 mm (1.8 in)	38 of 100 (Notable)
Basti	India	Record daily precipitation	194.8 mm (7.7 in)	38 of 100 (Notable)
Westgrove	Australia	Record daily precipitation	30.5 mm (1.2 in)	37 of 100 (Notable)
Adel	United States	Record daily precipitation	48.3 mm (1.9 in)	37 of 100 (Notable)
Woodward	United States	Record daily precipitation	41.1 mm (1.6 in)	37 of 100 (Notable)
Borio	India	Record daily precipitation	109.7 mm (4.3 in)	34 of 100 (Routine)
Bharatpur	India	Record daily precipitation	80.0 mm (3.1 in)	34 of 100 (Routine)
Alur	India	Record daily precipitation	72.9 mm (2.9 in)	33 of 100 (Routine)
Walnut Grove	United States	Record daily precipitation	37.3 mm (1.5 in)	33 of 100 (Routine)
Norwich	United States	Record daily precipitation	70.1 mm (2.8 in)	33 of 100 (Routine)
Purcellville	United States	Record daily precipitation	53.6 mm (2.1 in)	33 of 100 (Routine)
Davangire	India	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Vaduj	India	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Bissem-Cuttack	India	Record daily precipitation	78.2 mm (3.1 in)	32 of 100 (Routine)
Patiala Obsy	India	Record daily precipitation	58.9 mm (2.3 in)	32 of 100 (Routine)
Hambantota	Sri Lanka	Record low maximum temperature	25.6 C (78.1 F)	31 of 100 (Routine)
Ariyalur	India	Record daily precipitation	110.5 mm (4.4 in)	31 of 100 (Routine)
Ramnagar	India	Record daily precipitation	88.9 mm (3.5 in)	30 of 100 (Routine)
Washim	India	Record daily precipitation	69.3 mm (2.7 in)	29 of 100 (Routine)
Jejuri	India	Record daily precipitation	36.8 mm (1.4 in)	29 of 100 (Routine)
Rahuri	India	Record daily precipitation	27.9 mm (1.1 in)	28 of 100 (Routine)
Tiruvadanai	India	Record daily precipitation	39.4 mm (1.6 in)	28 of 100 (Routine)
Ft Pierce	United States	Record daily precipitation	74.2 mm (2.9 in)	28 of 100 (Routine)
Rajauli	India	Record daily precipitation	91.4 mm (3.6 in)	27 of 100 (Routine)
Bakhtiarpur	India	Record daily precipitation	101.6 mm (4.0 in)	27 of 100 (Routine)
Silli	India	Record daily precipitation	62.2 mm (2.4 in)	27 of 100 (Routine)
Hirekerur	India	Record daily precipitation	40.6 mm (1.6 in)	27 of 100 (Routine)
Dindigul	India	Record daily precipitation	87.6 mm (3.4 in)	27 of 100 (Routine)
Kirnur Nam	India	Record daily precipitation	35.6 mm (1.4 in)	27 of 100 (Routine)
Gangarampur	India	Record daily precipitation	78.7 mm (3.1 in)	27 of 100 (Routine)
Bhimber	Pakistan	Record daily precipitation	102.1 mm (4.0 in)	27 of 100 (Routine)
Longreach Post Office	Australia	Record low maximum temperature	17.2 C (63.0 F)	26 of 100 (Routine)
Charleville Post Office	Australia	Record low maximum temperature	12.7 C (54.9 F)	26 of 100 (Routine)
Monghyr	India	Record daily precipitation	91.4 mm (3.6 in)	26 of 100 (Routine)
Asthawan	India	Record daily precipitation	82.6 mm (3.3 in)	26 of 100 (Routine)
Challakire	India	Record daily precipitation	50.8 mm (2.0 in)	26 of 100 (Routine)
Ottawa	United States	Record daily precipitation	86.4 mm (3.4 in)	26 of 100 (Routine)
Pawhuska	United States	Record daily precipitation	105.4 mm (4.1 in)	26 of 100 (Routine)
Bikram	India	Record daily precipitation	123.2 mm (4.9 in)	24 of 100 (Routine)
Palwal	India	Record daily precipitation	40.9 mm (1.6 in)	24 of 100 (Routine)
Akhnoor	India	Record daily precipitation	111.8 mm (4.4 in)	24 of 100 (Routine)
Harapanahalli	India	Record daily precipitation	29.0 mm (1.1 in)	24 of 100 (Routine)
Haveri	India	Record daily precipitation	33.0 mm (1.3 in)	24 of 100 (Routine)
Arsikere	India	Record daily precipitation	46.7 mm (1.8 in)	24 of 100 (Routine)
Cutchogue	United States	Record daily precipitation	39.9 mm (1.6 in)	24 of 100 (Routine)
Hvar	Croatia	Record high maximum temperature	32.6 C (90.7 F)	23 of 100 (Routine)
Sheikhpura	India	Record daily precipitation	95.8 mm (3.8 in)	23 of 100 (Routine)
McPherson	United States	Record daily precipitation	55.1 mm (2.2 in)	23 of 100 (Routine)
Hailakundi India	India	Record daily precipitation	71.4 mm (2.8 in)	22 of 100 (Routine)
Arrah Obsy Sr	India	Record daily precipitation	70.6 mm (2.8 in)	22 of 100 (Routine)
Phillaur	India	Record daily precipitation	50.0 mm (2.0 in)	22 of 100 (Routine)
Chengam	India	Record daily precipitation	63.5 mm (2.5 in)	22 of 100 (Routine)
Firozabad	India	Record daily precipitation	55.4 mm (2.2 in)	22 of 100 (Routine)
Chatrapatti	India	Record daily precipitation	52.1 mm (2.1 in)	21 of 100 (Routine)

Counts by Type and Timescale

324 records

Records set or tied on 20 August 1933 by type: Highest daily maximum 21, Lowest daily maximum 67, Highest daily minimum 26, Lowest daily minimum 15, Heaviest daily rainfall 195.

Records on 20 August 1933 by type
Record type	Records
Highest daily maximum	21
Lowest daily maximum	67
Highest daily minimum	26
Lowest daily minimum	15
Heaviest daily rainfall	195
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 August 1933 by timescale: all-time 0, monthly 6, daily 318.

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 124.4. Ties are not counted.

Top 20 by Significance

20 August 1933

Top 20 records on 20 August 1933 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 1933	Helena Wb City, US	monthly rain	48.0 mm (1.9 in)	24.6 mm (1.0 in)	10 years	57 of 100 (Notable)
20 August 1933	Barharwa, IN	daily rain	172.7 mm (6.8 in)	124.4 mm (4.9 in)	20 years	49 of 100 (Notable)
20 August 1933	Sampagaon-Bailh, IN	daily rain	76.2 mm (3.0 in)	62.0 mm (2.4 in)	11 years	46 of 100 (Notable)
20 August 1933	Tasgaon, IN	daily rain	69.1 mm (2.7 in)	51.6 mm (2.0 in)	12 years	46 of 100 (Notable)
20 August 1933	Shimoga, IN	daily rain	53.1 mm (2.1 in)	27.7 mm (1.1 in)	19 years	43 of 100 (Notable)
20 August 1933	Buxar, IN	daily rain	114.3 mm (4.5 in)	64.8 mm (2.6 in)	22 years	41 of 100 (Notable)
20 August 1933	Jagalur, IN	daily rain	46.7 mm (1.8 in)	37.3 mm (1.5 in)	27 years	38 of 100 (Notable)
20 August 1933	Basti, IN	monthly rain	194.8 mm (7.7 in)	33.5 mm (1.3 in)	32 years	38 of 100 (Notable)
20 August 1933	Westgrove, AU	daily rain	30.5 mm (1.2 in)	23.1 mm (0.9 in)	24 years	37 of 100 (Notable)
20 August 1933	Adel, US	daily rain	48.3 mm (1.9 in)	23.4 mm (0.9 in)	15 years	37 of 100 (Notable)
20 August 1933	Woodward, US	daily rain	41.1 mm (1.6 in)	34.7 mm (1.4 in)	32 years	37 of 100 (Notable)
20 August 1933	Borio, IN	daily rain	109.7 mm (4.3 in)	48.5 mm (1.9 in)	28 years	34 of 100 (Routine)
20 August 1933	Bharatpur, IN	daily rain	80.0 mm (3.1 in)	59.4 mm (2.3 in)	16 years	34 of 100 (Routine)
20 August 1933	Alur, IN	daily rain	72.9 mm (2.9 in)	42.4 mm (1.7 in)	11 years	33 of 100 (Routine)
20 August 1933	Walnut Grove, US	daily rain	37.3 mm (1.5 in)	24.6 mm (1.0 in)	27 years	33 of 100 (Routine)
20 August 1933	Norwich, US	daily rain	70.1 mm (2.8 in)	45.2 mm (1.8 in)	14 years	33 of 100 (Routine)
20 August 1933	Purcellville, US	daily rain	53.6 mm (2.1 in)	37.9 mm (1.5 in)	7 years	33 of 100 (Routine)
20 August 1933	Davangire, IN	daily rain	34.3 mm (1.4 in)	21.6 mm (0.9 in)	19 years	32 of 100 (Routine)
20 August 1933	Vaduj, IN	daily rain	34.3 mm (1.4 in)	19.1 mm (0.8 in)	31 years	32 of 100 (Routine)
20 August 1933	Bissem-Cuttack, IN	daily rain	78.2 mm (3.1 in)	53.6 mm (2.1 in)	8 years	32 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

1797 to 1933

Records set or tied on this calendar date in each year from 1797 to 1933. 1933 had 324 records.

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

Records on 08-20 in each year
Year	Records
1797	1
1807	1
1809	2
1816	1
1830	1
1832	1
1838	1
1840	1
1842	1
1846	1
1849	1
1850	1
1852	1
1858	3
1863	5
1867	4
1870	3
1871	1
1873	1
1875	2
1877	1
1883	2
1884	2
1885	6
1886	1
1888	1
1889	2
1890	2
1891	2
1892	6
1893	1
1894	1
1895	1
1896	5
1897	6
1898	1
1899	5
1900	7
1901	12
1902	3
1903	7
1904	30
1905	7
1906	26
1907	15
1908	21
1909	69
1910	7
1911	18
1912	25
1913	23
1914	15
1915	14
1916	74
1917	51
1918	69
1919	25
1920	47
1921	23
1922	52
1923	83
1924	132
1925	193
1926	187
1927	338
1928	101
1929	213
1930	318
1931	214
1932	299
1933	324
1934	376
1935	339
1936	543
1937	537
1938	250
1939	448
1940	695
1941	230
1942	429
1943	436
1944	355
1945	398
1946	349
1947	988
1948	403
1949	431
1950	1,341
1951	824
1952	425
1953	441
1954	476
1955	848
1956	678
1957	342
1958	281
1959	764
1960	465
1961	520
1962	684
1963	577
1964	629
1965	470
1966	1,094
1967	657
1968	862
1969	608
1970	414
1971	585
1972	522
1973	490
1974	565
1975	411
1976	894
1977	860
1978	563
1979	1,009
1980	991
1981	856
1982	620
1983	1,465
1984	696
1985	666
1986	819
1987	564
1988	991
1989	603
1990	1,262
1991	804
1992	1,168
1993	759
1994	719
1995	1,113
1996	900
1997	1,214
1998	802
1999	810
2000	989
2001	909
2002	1,208
2003	1,031
2004	1,333
2005	1,112
2006	851
2007	1,955
2008	1,170
2009	1,414
2010	1,028
2011	987
2012	1,086
2013	545
2014	582
2015	1,075
2016	872
2017	324
2018	657
2019	698
2020	1,051
2021	1,028
2022	1,038
2023	1,479
2024	589
2025	1,134
2026	985

Download the Data

Data for records on 1933-08-20: 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	236
20 to 40	34
40 to 60	16
60 to 80	3
80 to 100	0
100 to 120	0
120 to 140	1