Weather Records on 20 August 1947

988 weather records were set or tied worldwide on 20 August 1947. Highest significance: Mt Clemens Ang Base, US.

Key Facts for 20 August 1947

On 20 August 1947, 988 weather records were set or tied at long-record stations worldwide.
584 were record highs and 108 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 10 monthly and 975 daily.
Mt Clemens Ang Base set a daily record precipitation of 66.0 mm (2.6 in) on 20 August 1947.
Across 163 earlier years (1797 to 2026) the same calendar date averaged 451 records.

Record Map

988 stations

988 station records on 20 August 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 August 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mt Clemens Ang Base	United States	Record daily precipitation	66.0 mm (2.6 in)	59 of 100 (Notable)
Wausau Record Herald	United States	Record daily precipitation	83.6 mm (3.3 in)	58 of 100 (Notable)
Birdsville Police Station	Australia	Record daily precipitation	39.9 mm (1.6 in)	56 of 100 (Notable)
Junagadh	India	Record daily precipitation	115.6 mm (4.6 in)	55 of 100 (Notable)
Hansot	India	Record daily precipitation	133.4 mm (5.3 in)	53 of 100 (Notable)
Alapaha Exp STN	United States	Record daily precipitation	134.6 mm (5.3 in)	53 of 100 (Notable)
Palitana	India	Record daily precipitation	121.9 mm (4.8 in)	52 of 100 (Notable)
Faribault	United States	Record daily precipitation	81.8 mm (3.2 in)	46 of 100 (Notable)
Ratnagiri	India	Record daily precipitation	144.8 mm (5.7 in)	45 of 100 (Notable)
Veraval	India	Record daily precipitation	87.1 mm (3.4 in)	44 of 100 (Notable)
Guhagar	India	Record daily precipitation	113.8 mm (4.5 in)	44 of 100 (Notable)
Begumpet Obsy	India	Record daily precipitation	67.8 mm (2.7 in)	43 of 100 (Notable)
Hillsboro	United States	Record high minimum temperature	26.7 C (80.1 F)	42 of 100 (Notable)
Mackinaw City 2	United States	Record daily precipitation	72.1 mm (2.8 in)	41 of 100 (Notable)
Devgad	India	Record daily precipitation	144.8 mm (5.7 in)	40 of 100 (Notable)
Hale Loud Dam	United States	Record daily precipitation	43.9 mm (1.7 in)	40 of 100 (Notable)
Coolanbilla	Australia	Record daily precipitation	26.7 mm (1.1 in)	39 of 100 (Notable)
Goulds Country Post Office	Australia	Record daily precipitation	41.1 mm (1.6 in)	39 of 100 (Notable)
Barkerville	Canada	Record low minimum temperature	-7.8 C (18.0 F)	39 of 100 (Notable)
Porbandar	India	Record daily precipitation	38.9 mm (1.5 in)	39 of 100 (Notable)
Shawano 2SSW	United States	Record daily precipitation	68.8 mm (2.7 in)	39 of 100 (Notable)
Blackville (Krui Vale)	Australia	Record daily precipitation	49.3 mm (1.9 in)	37 of 100 (Notable)
Bardoli	India	Record daily precipitation	96.5 mm (3.8 in)	37 of 100 (Notable)
Osmanabad	India	Record daily precipitation	71.4 mm (2.8 in)	37 of 100 (Notable)
Findlay Wpcc	United States	Record daily precipitation	45.0 mm (1.8 in)	36 of 100 (Notable)
Karimganj	India	Record daily precipitation	134.6 mm (5.3 in)	35 of 100 (Notable)
Kaimganj	India	Record daily precipitation	105.9 mm (4.2 in)	33 of 100 (Routine)
Chernjaevo	Russia	Record daily precipitation	73.0 mm (2.9 in)	33 of 100 (Routine)
Winamac 2SSE	United States	Record high maximum temperature	37.8 C (100.0 F)	32 of 100 (Routine)
Sachor	India	Record daily precipitation	114.3 mm (4.5 in)	31 of 100 (Routine)
Sultan Bazar	India	Record daily precipitation	54.6 mm (2.1 in)	30 of 100 (Routine)
Garden Valley	United States	Record high minimum temperature	18.9 C (66.0 F)	30 of 100 (Routine)
Mio Hydro Plt	United States	Record daily precipitation	77.0 mm (3.0 in)	30 of 100 (Routine)
Farmington 3NW	United States	Record daily precipitation	72.4 mm (2.9 in)	30 of 100 (Routine)
Black Creek	Australia	Record daily precipitation	25.1 mm (1.0 in)	29 of 100 (Routine)
Rangia	India	Record daily precipitation	63.0 mm (2.5 in)	29 of 100 (Routine)
Chhaygaon	India	Record daily precipitation	88.9 mm (3.5 in)	29 of 100 (Routine)
Dapoli	India	Record daily precipitation	160.0 mm (6.3 in)	29 of 100 (Routine)
Livermore	United States	Record high minimum temperature	19.4 C (66.9 F)	29 of 100 (Routine)
Redding Fire STN 2	United States	Record low maximum temperature	22.8 C (73.0 F)	29 of 100 (Routine)
Angola	United States	Record high maximum temperature	35.6 C (96.1 F)	29 of 100 (Routine)
St Peter	United States	Record daily precipitation	63.5 mm (2.5 in)	29 of 100 (Routine)
Fairlight Station	Australia	Record daily precipitation	32.3 mm (1.3 in)	28 of 100 (Routine)
Mangaon	India	Record daily precipitation	142.2 mm (5.6 in)	28 of 100 (Routine)
Russellville	United States	Record high minimum temperature	25.0 C (77.0 F)	28 of 100 (Routine)
Columbus Junction	United States	Record high minimum temperature	31.1 C (88.0 F)	28 of 100 (Routine)
Te Kowai Exp STN	Australia	Record daily precipitation	42.4 mm (1.7 in)	27 of 100 (Routine)
Batlow Post Office	Australia	Record daily precipitation	36.1 mm (1.4 in)	27 of 100 (Routine)
Lottah	Australia	Record daily precipitation	56.6 mm (2.2 in)	27 of 100 (Routine)
Ambari	India	Record daily precipitation	124.5 mm (4.9 in)	27 of 100 (Routine)
Audubon	United States	Record high minimum temperature	25.6 C (78.1 F)	27 of 100 (Routine)
Carroll	United States	Record high maximum temperature	38.9 C (102.0 F)	27 of 100 (Routine)
S Haven	United States	Record high minimum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Appleton	United States	Record daily precipitation	25.4 mm (1.0 in)	27 of 100 (Routine)
Cudgen Plantation	Australia	Record daily precipitation	44.2 mm (1.7 in)	26 of 100 (Routine)
Mundo Novo	Brazil	Record daily precipitation	25.0 mm (1.0 in)	26 of 100 (Routine)
Southampton	Canada	Record high minimum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Digri	India	Record daily precipitation	81.3 mm (3.2 in)	26 of 100 (Routine)
Britt 3E	United States	Record high maximum temperature	37.2 C (99.0 F)	26 of 100 (Routine)
Rockwell City	United States	Record high maximum temperature	38.3 C (100.9 F)	26 of 100 (Routine)

Counts by Type and Timescale

988 records

Records set or tied on 20 August 1947 by type: Highest daily maximum 197, Lowest daily maximum 54, Highest daily minimum 387, Lowest daily minimum 54, Heaviest daily rainfall 296.

Records on 20 August 1947 by type
Record type	Records
Highest daily maximum	197
Lowest daily maximum	54
Highest daily minimum	387
Lowest daily minimum	54
Heaviest daily rainfall	296
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 August 1947 by timescale: all-time 3, monthly 10, daily 975.

How Much Records Were Beaten By

756 broken records

Margins by which the 756 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 107.0. Ties are not counted.

Top 20 by Significance

20 August 1947

Top 20 records on 20 August 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 1947	Mt Clemens Ang Base, US	daily rain	66.0 mm (2.6 in)	46.7 mm (1.8 in)	46 years	59 of 100 (Notable)
20 August 1947	Wausau Record Herald, US	daily rain	83.6 mm (3.3 in)	58.2 mm (2.3 in)	44 years	58 of 100 (Notable)
20 August 1947	Birdsville Police Station, AU	monthly rain	39.9 mm (1.6 in)	22.9 mm (0.9 in)	4 years	56 of 100 (Notable)
20 August 1947	Junagadh, IN	daily rain	115.6 mm (4.6 in)	88.4 mm (3.5 in)	38 years	55 of 100 (Notable)
20 August 1947	Hansot, IN	daily rain	133.4 mm (5.3 in)	107.0 mm (4.2 in)	40 years	53 of 100 (Notable)
20 August 1947	Alapaha Exp STN, US	daily rain	134.6 mm (5.3 in)	91.4 mm (3.6 in)	29 years	53 of 100 (Notable)
20 August 1947	Palitana, IN	daily rain	121.9 mm (4.8 in)	84.3 mm (3.3 in)	28 years	52 of 100 (Notable)
20 August 1947	Faribault, US	daily rain	81.8 mm (3.2 in)	56.4 mm (2.2 in)	12 years	46 of 100 (Notable)
20 August 1947	Ratnagiri, IN	daily rain	144.8 mm (5.7 in)	73.7 mm (2.9 in)	25 years	45 of 100 (Notable)
20 August 1947	Veraval, IN	daily rain	87.1 mm (3.4 in)	73.6 mm (2.9 in)	0 years	44 of 100 (Notable)
20 August 1947	Guhagar, IN	daily rain	113.8 mm (4.5 in)	60.5 mm (2.4 in)	45 years	44 of 100 (Notable)
20 August 1947	Begumpet Obsy, IN	daily rain	67.8 mm (2.7 in)	38.8 mm (1.5 in)	29 years	43 of 100 (Notable)
20 August 1947	Hillsboro, US	all-time high min	26.7 C (80.1 F)	0.6 C (1.1 F)	54 years	42 of 100 (Notable)
20 August 1947	Mackinaw City 2, US	monthly rain	72.1 mm (2.8 in)	12.9 mm (0.5 in)	46 years	41 of 100 (Notable)
20 August 1947	Devgad, IN	daily rain	144.8 mm (5.7 in)	72.4 mm (2.9 in)	6 years	40 of 100 (Notable)
20 August 1947	Hale Loud Dam, US	daily rain	43.9 mm (1.7 in)	29.9 mm (1.2 in)	32 years	40 of 100 (Notable)
20 August 1947	Coolanbilla, AU	daily rain	26.7 mm (1.1 in)	18.8 mm (0.7 in)	45 years	39 of 100 (Notable)
20 August 1947	Goulds Country Post Office, AU	daily rain	41.1 mm (1.6 in)	25.4 mm (1.0 in)	36 years	39 of 100 (Notable)
20 August 1947	Barkerville, CA	monthly low min	-7.8 C (18.0 F)	3.4 C (6.1 F)	36 years	39 of 100 (Notable)
20 August 1947	Porbandar, IN	daily rain	38.9 mm (1.5 in)	33.1 mm (1.3 in)	38 years	39 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

1797 to 1947

Records set or tied on this calendar date in each year from 1797 to 1947. 1947 had 988 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 1947-08-20: 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	703
20 to 40	34
40 to 60	8
60 to 80	7
80 to 100	3
100 to 120	1