Weather Records on 20 August 1975

411 weather records were set or tied worldwide on 20 August 1975. Highest significance: Morris W Cntrl Rsch & Outreach, US.

Key Facts for 20 August 1975

On 20 August 1975, 411 weather records were set or tied at long-record stations worldwide.
91 were record highs and 161 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 11 monthly and 397 daily.
Morris W Cntrl Rsch & Outreach set a daily record precipitation of 63.8 mm (2.5 in) on 20 August 1975.
Across 163 earlier years (1797 to 2026) the same calendar date averaged 455 records.

Record Map

411 stations

411 station records on 20 August 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 August 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Morris W Cntrl Rsch & Outreach	United States	Record daily precipitation	63.8 mm (2.5 in)	55 of 100 (Notable)
Forks 4 NNE	United States	Record daily precipitation	72.6 mm (2.9 in)	53 of 100 (Notable)
Caen-Carpiquet	France	Record daily precipitation	50.3 mm (2.0 in)	51 of 100 (Notable)
Mina	United States	Record low maximum temperature	21.7 C (71.1 F)	48 of 100 (Notable)
Fullerton 1 ESE	United States	Record daily precipitation	48.8 mm (1.9 in)	47 of 100 (Notable)
Victor 4 N	United States	Record daily precipitation	76.7 mm (3.0 in)	47 of 100 (Notable)
Live Oak	United States	Record daily precipitation	74.2 mm (2.9 in)	46 of 100 (Notable)
Mariinsk	Russia	Record daily precipitation	37.4 mm (1.5 in)	45 of 100 (Notable)
River Falls	United States	Record daily precipitation	76.5 mm (3.0 in)	45 of 100 (Notable)
Pioche	United States	Record low maximum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Forman 5 SSE	United States	Record daily precipitation	84.6 mm (3.3 in)	42 of 100 (Notable)
Koosharem	United States	Record low maximum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Stokes	Australia	Record daily precipitation	26.4 mm (1.0 in)	41 of 100 (Notable)
Vinga	Sweden	Record daily precipitation	28.9 mm (1.1 in)	41 of 100 (Notable)
Kaca	Russia	Record daily precipitation	28.1 mm (1.1 in)	40 of 100 (Notable)
Stillwater 1 SE	United States	Record daily precipitation	58.4 mm (2.3 in)	40 of 100 (Notable)
Bogotol	Russia	Record daily precipitation	31.9 mm (1.3 in)	39 of 100 (Notable)
Norfolk 2 SW	United States	Record low maximum temperature	17.8 C (64.0 F)	39 of 100 (Notable)
Rock 1 E	United States	Record daily precipitation	43.9 mm (1.7 in)	39 of 100 (Notable)
Tartu	Estonia	Record low minimum temperature	2.1 C (35.8 F)	37 of 100 (Notable)
Apatzingan (Smn)	Mexico	Record daily precipitation	68.8 mm (2.7 in)	37 of 100 (Notable)
Campbell	United States	Record daily precipitation	51.3 mm (2.0 in)	36 of 100 (Notable)
Garrison	United States	Record low maximum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Whiteriver 1 SW	United States	Record low maximum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Holbrook	United States	Record low maximum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Adak AP	United States	Record daily precipitation	37.1 mm (1.5 in)	33 of 100 (Routine)
Cosamaloapan de Carpio (Smn)	Mexico	Record high maximum temperature	40.0 C (104.0 F)	32 of 100 (Routine)
Tarifa	Spain	Record high minimum temperature	24.2 C (75.6 F)	32 of 100 (Routine)
Springerville	United States	Record low maximum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Fayetteville Exp STN	United States	Record daily precipitation	31.2 mm (1.2 in)	32 of 100 (Routine)
Aberdeen	United States	Record low maximum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Woodside	Australia	Record daily precipitation	33.0 mm (1.3 in)	31 of 100 (Routine)
Auburn	United States	Record low minimum temperature	7.2 C (45.0 F)	31 of 100 (Routine)
Jackson 3 NW	United States	Record daily precipitation	37.3 mm (1.5 in)	31 of 100 (Routine)
Brooksville Chin Hill	United States	Record daily precipitation	69.9 mm (2.8 in)	30 of 100 (Routine)
Minden	United States	Record low maximum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Lisbon	United States	Record daily precipitation	76.7 mm (3.0 in)	30 of 100 (Routine)
Rolla 1NE	United States	Record low maximum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Echunga Golf Course	Australia	Record daily precipitation	25.2 mm (1.0 in)	29 of 100 (Routine)
Lobethal	Australia	Record daily precipitation	30.0 mm (1.2 in)	28 of 100 (Routine)
Whitefish Pt	United States	Record low minimum temperature	5.0 C (41.0 F)	28 of 100 (Routine)
Lovelock	United States	Record low maximum temperature	22.2 C (72.0 F)	28 of 100 (Routine)
Espanola	United States	Record high minimum temperature	17.2 C (63.0 F)	28 of 100 (Routine)
Old Forge	United States	Record low minimum temperature	0.0 C (32.0 F)	28 of 100 (Routine)
Tartu-Toravere	Estonia	Record low minimum temperature	4.3 C (39.7 F)	27 of 100 (Routine)
Ohotsk	Russia	Record daily precipitation	56.7 mm (2.2 in)	27 of 100 (Routine)
Blagovescensk	Russia	Record high maximum temperature	33.5 C (92.3 F)	27 of 100 (Routine)
San Carlos Rsvr	United States	Record low maximum temperature	29.4 C (84.9 F)	27 of 100 (Routine)
Bushnell 1 E	United States	Record low minimum temperature	17.2 C (63.0 F)	27 of 100 (Routine)
Brady Aznoe	United States	Record daily precipitation	36.1 mm (1.4 in)	27 of 100 (Routine)
Mtn View 91	United States	Record low maximum temperature	21.7 C (71.1 F)	27 of 100 (Routine)
Langley Downs	Australia	Record daily precipitation	46.0 mm (1.8 in)	26 of 100 (Routine)
Cronulla Station	Australia	Record daily precipitation	32.3 mm (1.3 in)	26 of 100 (Routine)
Maria Island (Darlington)	Australia	Record daily precipitation	27.2 mm (1.1 in)	26 of 100 (Routine)
Petrified Forest Np	United States	Record low maximum temperature	23.3 C (73.9 F)	25 of 100 (Routine)
Cambridge	United States	Record daily precipitation	50.8 mm (2.0 in)	25 of 100 (Routine)
Chinook	United States	Record daily precipitation	40.9 mm (1.6 in)	25 of 100 (Routine)
Owyhee Dam	United States	Record low maximum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Bluff	United States	Record low maximum temperature	26.7 C (80.1 F)	25 of 100 (Routine)
Kenosha Wwtp	United States	Record daily precipitation	29.2 mm (1.1 in)	25 of 100 (Routine)

Counts by Type and Timescale

411 records

Records set or tied on 20 August 1975 by type: Highest daily maximum 30, Lowest daily maximum 100, Highest daily minimum 61, Lowest daily minimum 61, Heaviest daily rainfall 159.

Records on 20 August 1975 by type
Record type	Records
Highest daily maximum	30
Lowest daily maximum	100
Highest daily minimum	61
Lowest daily minimum	61
Heaviest daily rainfall	159
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 August 1975 by timescale: all-time 3, monthly 11, daily 397.

How Much Records Were Beaten By

312 broken records

Margins by which the 312 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 57.1. Ties are not counted.

Top 20 by Significance

20 August 1975

Top 20 records on 20 August 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 1975	Morris W Cntrl Rsch & Outreach, US	daily rain	63.8 mm (2.5 in)	27.0 mm (1.1 in)	85 years	55 of 100 (Notable)
20 August 1975	Forks 4 NNE, US	all-time rain	72.6 mm (2.9 in)	10.4 mm (0.4 in)	52 years	53 of 100 (Notable)
20 August 1975	Caen-Carpiquet, FR	monthly rain	50.3 mm (2.0 in)	16.5 mm (0.6 in)	24 years	51 of 100 (Notable)
20 August 1975	Mina, US	daily low max	21.7 C (71.1 F)	6.1 C (11.0 F)	68 years	48 of 100 (Notable)
20 August 1975	Fullerton 1 ESE, US	daily rain	48.8 mm (1.9 in)	24.9 mm (1.0 in)	75 years	47 of 100 (Notable)
20 August 1975	Victor 4 N, US	daily rain	76.7 mm (3.0 in)	57.1 mm (2.2 in)	8 years	47 of 100 (Notable)
20 August 1975	Live Oak, US	daily rain	74.2 mm (2.9 in)	50.6 mm (2.0 in)	18 years	46 of 100 (Notable)
20 August 1975	Mariinsk, RU	daily rain	37.4 mm (1.5 in)	20.9 mm (0.8 in)	33 years	45 of 100 (Notable)
20 August 1975	River Falls, US	daily rain	76.5 mm (3.0 in)	39.2 mm (1.5 in)	28 years	45 of 100 (Notable)
20 August 1975	Pioche, US	daily low max	18.9 C (66.0 F)	5.0 C (9.0 F)	68 years	42 of 100 (Notable)
20 August 1975	Forman 5 SSE, US	monthly rain	84.6 mm (3.3 in)	5.9 mm (0.23 in)	69 years	42 of 100 (Notable)
20 August 1975	Koosharem, US	daily low max	18.3 C (64.9 F)	3.4 C (6.1 F)	78 years	42 of 100 (Notable)
20 August 1975	Stokes, AU	daily rain	26.4 mm (1.0 in)	8.1 mm (0.32 in)	56 years	41 of 100 (Notable)
20 August 1975	Vinga, SE	daily rain	28.9 mm (1.1 in)	11.7 mm (0.5 in)	56 years	41 of 100 (Notable)
20 August 1975	Kaca, RU	daily rain	28.1 mm (1.1 in)	18.1 mm (0.7 in)	32 years	40 of 100 (Notable)
20 August 1975	Stillwater 1 SE, US	daily rain	58.4 mm (2.3 in)	19.3 mm (0.8 in)	69 years	40 of 100 (Notable)
20 August 1975	Bogotol, RU	daily rain	31.9 mm (1.3 in)	19.6 mm (0.8 in)	16 years	39 of 100 (Notable)
20 August 1975	Norfolk 2 SW, US	daily low max	17.8 C (64.0 F)	1.6 C (2.9 F)	89 years	39 of 100 (Notable)
20 August 1975	Rock 1 E, US	daily rain	43.9 mm (1.7 in)	17.2 mm (0.7 in)	54 years	39 of 100 (Notable)
20 August 1975	Tartu, EE	daily low min	2.1 C (35.8 F)	2.7 C (4.9 F)	64 years	37 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 1975

Records set or tied on this calendar date in each year from 1797 to 1975. 1975 had 411 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 1975-08-20: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 10	271
10 to 20	30
20 to 30	7
30 to 40	2
40 to 50	0
50 to 60	2