Weather Records on 20 August 1976

894 weather records were set or tied worldwide on 20 August 1976. Highest significance: San Luis Obispo Poly, US.

Key Facts for 20 August 1976

On 20 August 1976, 894 weather records were set or tied at long-record stations worldwide.
289 were record highs and 319 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 27 monthly and 866 daily.
San Luis Obispo Poly set a daily record precipitation of 25.7 mm (1.0 in) on 20 August 1976.
Across 163 earlier years (1797 to 2026) the same calendar date averaged 452 records.

Record Map

894 stations

894 station records on 20 August 1976 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 August 1976: highest significance records shown on the map
Station	Country	Type	Value	Significance
San Luis Obispo Poly	United States	Record daily precipitation	25.7 mm (1.0 in)	57 of 100 (Notable)
Usina Esmeril (Cpfl) B4-005	Brazil	Record daily precipitation	41.3 mm (1.6 in)	56 of 100 (Notable)
Fazenda Santa Cecilia	Brazil	Record daily precipitation	35.1 mm (1.4 in)	55 of 100 (Notable)
Lagoa Branca	Brazil	Record daily precipitation	33.1 mm (1.3 in)	54 of 100 (Notable)
Ilha Do Ouro	Brazil	Record daily precipitation	25.0 mm (1.0 in)	53 of 100 (Notable)
Ribeiro Dos Santos	Brazil	Record daily precipitation	42.1 mm (1.7 in)	52 of 100 (Notable)
Fazenda Sao Lourenco	Brazil	Record daily precipitation	30.4 mm (1.2 in)	51 of 100 (Notable)
Biser	Russia	Record daily precipitation	49.3 mm (1.9 in)	51 of 100 (Notable)
Usina Amalia	Brazil	Record daily precipitation	25.6 mm (1.0 in)	48 of 100 (Notable)
Sao Jose Do Rio Preto	Brazil	Record daily precipitation	48.9 mm (1.9 in)	47 of 100 (Notable)
Tamandua	Brazil	Record daily precipitation	35.3 mm (1.4 in)	43 of 100 (Notable)
Armagh	United Kingdom	Record high maximum temperature	25.5 C (77.9 F)	42 of 100 (Notable)
Olimpia	Brazil	Record daily precipitation	25.1 mm (1.0 in)	41 of 100 (Notable)
Galway	Ireland	Record high maximum temperature	26.5 C (79.7 F)	41 of 100 (Notable)
Newton Rigg	United Kingdom	Record high maximum temperature	26.2 C (79.2 F)	41 of 100 (Notable)
Diablo Dam	United States	Record daily precipitation	31.0 mm (1.2 in)	41 of 100 (Notable)
Jardinopolis	Brazil	Record daily precipitation	31.9 mm (1.3 in)	40 of 100 (Notable)
Mayville	United States	Record high maximum temperature	38.9 C (102.0 F)	40 of 100 (Notable)
Mococa C4-018	Brazil	Record daily precipitation	29.4 mm (1.2 in)	39 of 100 (Notable)
Leech Lake	United States	Record high maximum temperature	36.7 C (98.1 F)	39 of 100 (Notable)
Pine Rvr Dam	United States	Record high maximum temperature	37.2 C (99.0 F)	39 of 100 (Notable)
Aquiles Serdan 46	Mexico	Record daily precipitation	41.7 mm (1.6 in)	38 of 100 (Notable)
Vanersborg	Sweden	Record high minimum temperature	17.3 C (63.1 F)	38 of 100 (Notable)
Pokegama Dam	United States	Record high maximum temperature	36.1 C (97.0 F)	38 of 100 (Notable)
Winnibigoshish Dam	United States	Record high maximum temperature	36.7 C (98.1 F)	38 of 100 (Notable)
Sao Jose Do Rio Pardo	Brazil	Record daily precipitation	27.4 mm (1.1 in)	37 of 100 (Notable)
Staunton Wtp	United States	Record low minimum temperature	6.1 C (43.0 F)	37 of 100 (Notable)
Lake Keechelus	United States	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Bayfield 6 N	United States	Record high maximum temperature	33.9 C (93.0 F)	37 of 100 (Notable)
New Iberia AP - Acadiana Rgnl	United States	Record low minimum temperature	16.7 C (62.1 F)	36 of 100 (Notable)
Sandy Lake Dam Libby	United States	Record high maximum temperature	35.0 C (95.0 F)	36 of 100 (Notable)
Saluda	United States	Record low minimum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Warsaw 2 NW	United States	Record low minimum temperature	9.4 C (48.9 F)	36 of 100 (Notable)
Monte Verde Paulista	Brazil	Record daily precipitation	25.2 mm (1.0 in)	35 of 100 (Notable)
Storrs	United States	Record low minimum temperature	5.0 C (41.0 F)	35 of 100 (Notable)
Sloan 3 S	United States	Record low maximum temperature	23.9 C (75.0 F)	35 of 100 (Notable)
Napoleon	United States	Record high minimum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Sao Joao da Boa Vista	Brazil	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)
Hialeah	United States	Record daily precipitation	86.1 mm (3.4 in)	34 of 100 (Routine)
Bergland Dam	United States	Record high maximum temperature	36.1 C (97.0 F)	34 of 100 (Routine)
Ellendale	United States	Record high maximum temperature	40.0 C (104.0 F)	34 of 100 (Routine)
Kennebec	United States	Record high maximum temperature	41.7 C (107.1 F)	34 of 100 (Routine)
Midland	United States	Record high minimum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Estacao Experimental	Brazil	Record daily precipitation	25.6 mm (1.0 in)	33 of 100 (Routine)
Aguai	Brazil	Record daily precipitation	28.7 mm (1.1 in)	33 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Tuscaloosa Oliver Dam	United States	Record low minimum temperature	14.4 C (57.9 F)	33 of 100 (Routine)
Detroit Lakes 1 NNE	United States	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Warroad	United States	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Willard 4 SW	United States	Record low maximum temperature	23.9 C (75.0 F)	33 of 100 (Routine)
Stephan 2 NW	United States	Record high maximum temperature	41.1 C (106.0 F)	33 of 100 (Routine)
Port Townsend	United States	Record low maximum temperature	13.9 C (57.0 F)	33 of 100 (Routine)
Ashland Exp Farm	United States	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Altinopolis	Brazil	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Santa Sofia	Brazil	Record daily precipitation	32.9 mm (1.3 in)	32 of 100 (Routine)
Fairhope 2 NE	United States	Record low minimum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Tucson WFO	United States	Record high minimum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Blountstown 2 SE	United States	Record low minimum temperature	18.3 C (64.9 F)	32 of 100 (Routine)
Little Falls 2NNE	United States	Record high maximum temperature	36.7 C (98.1 F)	32 of 100 (Routine)
Long Prairie	United States	Record high maximum temperature	36.7 C (98.1 F)	32 of 100 (Routine)

Counts by Type and Timescale

894 records

Records set or tied on 20 August 1976 by type: Highest daily maximum 170, Lowest daily maximum 157, Highest daily minimum 119, Lowest daily minimum 162, Heaviest daily rainfall 286.

Records on 20 August 1976 by type
Record type	Records
Highest daily maximum	170
Lowest daily maximum	157
Highest daily minimum	119
Lowest daily minimum	162
Heaviest daily rainfall	286
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 August 1976 by timescale: all-time 1, monthly 27, daily 866.

How Much Records Were Beaten By

721 broken records

Margins by which the 721 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 45.7. Ties are not counted.

Top 20 by Significance

20 August 1976

Top 20 records on 20 August 1976 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 1976	San Luis Obispo Poly, US	daily rain	25.7 mm (1.0 in)	25.7 mm (1.0 in)	82 years	57 of 100 (Notable)
20 August 1976	Usina Esmeril (Cpfl) B4-005, BR	daily rain	41.3 mm (1.6 in)	41.3 mm (1.6 in)	40 years	56 of 100 (Notable)
20 August 1976	Fazenda Santa Cecilia, BR	daily rain	35.1 mm (1.4 in)	35.1 mm (1.4 in)	39 years	55 of 100 (Notable)
20 August 1976	Lagoa Branca, BR	daily rain	33.1 mm (1.3 in)	33.1 mm (1.3 in)	39 years	54 of 100 (Notable)
20 August 1976	Ilha Do Ouro, BR	daily rain	25.0 mm (1.0 in)	18.0 mm (0.7 in)	30 years	53 of 100 (Notable)
20 August 1976	Ribeiro Dos Santos, BR	daily rain	42.1 mm (1.7 in)	42.1 mm (1.7 in)	33 years	52 of 100 (Notable)
20 August 1976	Fazenda Sao Lourenco, BR	daily rain	30.4 mm (1.2 in)	30.4 mm (1.2 in)	33 years	51 of 100 (Notable)
20 August 1976	Biser, RU	daily rain	49.3 mm (1.9 in)	17.3 mm (0.7 in)	68 years	51 of 100 (Notable)
20 August 1976	Usina Amalia, BR	daily rain	25.6 mm (1.0 in)	25.6 mm (1.0 in)	34 years	48 of 100 (Notable)
20 August 1976	Sao Jose Do Rio Preto, BR	daily rain	48.9 mm (1.9 in)	43.4 mm (1.7 in)	23 years	47 of 100 (Notable)
20 August 1976	Tamandua, BR	daily rain	35.3 mm (1.4 in)	32.1 mm (1.3 in)	23 years	43 of 100 (Notable)
20 August 1976	Armagh, GB	daily high max	25.5 C (77.9 F)	0.6 C (1.1 F)	118 years	42 of 100 (Notable)
20 August 1976	Olimpia, BR	daily rain	25.1 mm (1.0 in)	22.6 mm (0.9 in)	23 years	41 of 100 (Notable)
20 August 1976	Galway, IE	daily high max	26.5 C (79.7 F)	0.4 C (0.7 F)	105 years	41 of 100 (Notable)
20 August 1976	Newton Rigg, GB	daily high max	26.2 C (79.2 F)	4.5 C (8.1 F)	58 years	41 of 100 (Notable)
20 August 1976	Diablo Dam, US	daily rain	31.0 mm (1.2 in)	18.0 mm (0.7 in)	22 years	41 of 100 (Notable)
20 August 1976	Jardinopolis, BR	daily rain	31.9 mm (1.3 in)	31.8 mm (1.3 in)	4 years	40 of 100 (Notable)
20 August 1976	Mayville, US	daily high max	38.9 C (102.0 F)	4.5 C (8.1 F)	75 years	40 of 100 (Notable)
20 August 1976	Mococa C4-018, BR	daily rain	29.4 mm (1.2 in)	29.4 mm (1.2 in)	39 years	39 of 100 (Notable)
20 August 1976	Leech Lake, US	daily high max	36.7 C (98.1 F)	3.9 C (7.0 F)	75 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 1976

Records set or tied on this calendar date in each year from 1797 to 1976. 1976 had 894 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 1976-08-20: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Histogram of margins by which records were beaten on 20 August 1976
Margin	Records
0 to 10	611
10 to 20	66
20 to 30	31
30 to 40	9
40 to 50	4