Weather Records on 10 August 1977

786 weather records were set or tied worldwide on 10 August 1977. Highest significance: George Airport, ZA.

Key Facts for 10 August 1977

On 10 August 1977, 786 weather records were set or tied at long-record stations worldwide.
242 were record highs and 170 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 774 daily.
George Airport set a daily record precipitation of 72.0 mm (2.8 in) on 10 August 1977.
Across 160 earlier years (1814 to 2026) the same calendar date averaged 466 records.

Record Map

786 stations

786 station records on 10 August 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 10 August 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
George Airport	South Africa	Record daily precipitation	72.0 mm (2.8 in)	63 of 100 (Major)
Ntsubane (Bos)	South Africa	Record daily precipitation	134.0 mm (5.3 in)	61 of 100 (Major)
The Oaks	Australia	Record daily precipitation	29.2 mm (1.1 in)	58 of 100 (Notable)
Brynawe, Paddock	South Africa	Record daily precipitation	75.4 mm (3.0 in)	58 of 100 (Notable)
Rocky Ford 2 SE	United States	Record daily precipitation	41.9 mm (1.6 in)	57 of 100 (Notable)
Woodville (Bos)	South Africa	Record daily precipitation	68.0 mm (2.7 in)	56 of 100 (Notable)
Cloughton	Australia	Record daily precipitation	43.0 mm (1.7 in)	54 of 100 (Notable)
Simao Dias (Anapolis)	Brazil	Record daily precipitation	59.2 mm (2.3 in)	51 of 100 (Notable)
Hyden	Australia	Record daily precipitation	35.2 mm (1.4 in)	50 of 100 (Notable)
Mozajsk	Russia	Record daily precipitation	41.6 mm (1.6 in)	50 of 100 (Notable)
Graham Rock	Australia	Record daily precipitation	25.4 mm (1.0 in)	49 of 100 (Notable)
Oakland	Australia	Record daily precipitation	37.2 mm (1.5 in)	49 of 100 (Notable)
Barras	Brazil	Record daily precipitation	35.2 mm (1.4 in)	49 of 100 (Notable)
Redlands	Australia	Record daily precipitation	36.0 mm (1.4 in)	48 of 100 (Notable)
Hogsback (Bos)	South Africa	Record daily precipitation	52.8 mm (2.1 in)	48 of 100 (Notable)
Logansport Cicott St	United States	Record daily precipitation	50.8 mm (2.0 in)	48 of 100 (Notable)
Sugozero	Russia	Record daily precipitation	42.2 mm (1.7 in)	47 of 100 (Notable)
Sparta	United States	Record daily precipitation	56.9 mm (2.2 in)	47 of 100 (Notable)
Telenning Hill	Australia	Record daily precipitation	28.1 mm (1.1 in)	46 of 100 (Notable)
Cuballing	Australia	Record daily precipitation	51.8 mm (2.0 in)	46 of 100 (Notable)
Rushy Pool	Australia	Record daily precipitation	29.2 mm (1.1 in)	46 of 100 (Notable)
Johnson 11 ESE	United States	Record daily precipitation	44.7 mm (1.8 in)	46 of 100 (Notable)
Mundaring	Australia	Record daily precipitation	67.6 mm (2.7 in)	44 of 100 (Notable)
Bergplaats (Bos)	South Africa	Record daily precipitation	54.5 mm (2.1 in)	44 of 100 (Notable)
Metten	Germany	Record daily precipitation	33.2 mm (1.3 in)	43 of 100 (Notable)
Knysna (Tnk)	South Africa	Record daily precipitation	43.0 mm (1.7 in)	43 of 100 (Notable)
Grahamstown	South Africa	Record daily precipitation	36.5 mm (1.4 in)	43 of 100 (Notable)
Willowvale (Tnk)	South Africa	Record daily precipitation	40.0 mm (1.6 in)	43 of 100 (Notable)
Kentland	United States	Record daily precipitation	68.1 mm (2.7 in)	43 of 100 (Notable)
Wabash	United States	Record daily precipitation	79.0 mm (3.1 in)	43 of 100 (Notable)
Sandhoogte (Pur)	South Africa	Record daily precipitation	40.0 mm (1.6 in)	42 of 100 (Notable)
Conception	United States	Record daily precipitation	57.7 mm (2.3 in)	42 of 100 (Notable)
Ygnattering	Australia	Record daily precipitation	28.2 mm (1.1 in)	40 of 100 (Notable)
Port Hope	Canada	Record daily precipitation	25.7 mm (1.0 in)	40 of 100 (Notable)
Concordia (Bos)	South Africa	Record daily precipitation	46.0 mm (1.8 in)	40 of 100 (Notable)
Goodland	United States	Record daily precipitation	52.1 mm (2.1 in)	40 of 100 (Notable)
Keurboomsrivier (Bos)	South Africa	Record daily precipitation	65.7 mm (2.6 in)	39 of 100 (Notable)
Oktjabrskij-Gorodok	Russia	Record high minimum temperature	22.6 C (72.7 F)	38 of 100 (Notable)
Peddie (Mag)	South Africa	Record daily precipitation	25.5 mm (1.0 in)	38 of 100 (Notable)
Perth Regional Office	Australia	Record daily precipitation	44.6 mm (1.8 in)	37 of 100 (Notable)
Hillcroft	Australia	Record daily precipitation	27.8 mm (1.1 in)	37 of 100 (Notable)
Annaberg-Buchholz	Germany	Record daily precipitation	41.1 mm (1.6 in)	37 of 100 (Notable)
Chemnitz	Germany	Record daily precipitation	37.4 mm (1.5 in)	37 of 100 (Notable)
Zametchino	Russia	Record high minimum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
Jonkersberg (Bos)	South Africa	Record daily precipitation	51.0 mm (2.0 in)	36 of 100 (Notable)
Goudveld (Bos)	South Africa	Record daily precipitation	38.5 mm (1.5 in)	36 of 100 (Notable)
Casa Grande Nm	United States	Record daily precipitation	43.2 mm (1.7 in)	36 of 100 (Notable)
Paw Paw 2S	United States	Record daily precipitation	54.6 mm (2.1 in)	36 of 100 (Notable)
Vevay	United States	Record daily precipitation	36.6 mm (1.4 in)	36 of 100 (Notable)
Ft Benton	United States	Record low minimum temperature	2.8 C (37.0 F)	36 of 100 (Notable)
Cartwright	Canada	Record daily precipitation	47.4 mm (1.9 in)	35 of 100 (Notable)
Kotlas	Russia	Record daily precipitation	29.1 mm (1.1 in)	35 of 100 (Notable)
Bele (Bos)	South Africa	Record daily precipitation	27.0 mm (1.1 in)	35 of 100 (Notable)
Mt Vernon 3 NE	United States	Record daily precipitation	52.8 mm (2.1 in)	35 of 100 (Notable)
Armadale	Australia	Record daily precipitation	45.0 mm (1.8 in)	34 of 100 (Routine)
Henley Park	Australia	Record daily precipitation	48.8 mm (1.9 in)	34 of 100 (Routine)
Nhill	Australia	Record high maximum temperature	23.8 C (74.8 F)	34 of 100 (Routine)
Medicine Hat A	Canada	Record low minimum temperature	2.3 C (36.1 F)	34 of 100 (Routine)
Bushy Vales, Margate	South Africa	Record daily precipitation	45.0 mm (1.8 in)	34 of 100 (Routine)
Tidewater	United States	Record high maximum temperature	39.4 C (102.9 F)	34 of 100 (Routine)

Counts by Type and Timescale

786 records

Records set or tied on 10 August 1977 by type: Highest daily maximum 116, Lowest daily maximum 88, Highest daily minimum 126, Lowest daily minimum 82, Heaviest daily rainfall 374.

Records on 10 August 1977 by type
Record type	Records
Highest daily maximum	116
Lowest daily maximum	88
Highest daily minimum	126
Lowest daily minimum	82
Heaviest daily rainfall	374
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 10 August 1977 by timescale: all-time 0, monthly 12, daily 774.

How Much Records Were Beaten By

622 broken records

Margins by which the 622 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 110.6. Ties are not counted.

Top 20 by Significance

10 August 1977

Top 20 records on 10 August 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 August 1977	George Airport, ZA	daily rain	72.0 mm (2.8 in)	48.1 mm (1.9 in)	52 years	63 of 100 (Major)
10 August 1977	Ntsubane (Bos), ZA	daily rain	134.0 mm (5.3 in)	110.6 mm (4.4 in)	52 years	61 of 100 (Major)
10 August 1977	The Oaks, AU	daily rain	29.2 mm (1.1 in)	17.3 mm (0.7 in)	70 years	58 of 100 (Notable)
10 August 1977	Brynawe, Paddock, ZA	daily rain	75.4 mm (3.0 in)	62.4 mm (2.5 in)	44 years	58 of 100 (Notable)
10 August 1977	Rocky Ford 2 SE, US	daily rain	41.9 mm (1.6 in)	26.7 mm (1.1 in)	81 years	57 of 100 (Notable)
10 August 1977	Woodville (Bos), ZA	daily rain	68.0 mm (2.7 in)	51.5 mm (2.0 in)	56 years	56 of 100 (Notable)
10 August 1977	Cloughton, AU	daily rain	43.0 mm (1.7 in)	30.6 mm (1.2 in)	27 years	54 of 100 (Notable)
10 August 1977	Simao Dias (Anapolis), BR	daily rain	59.2 mm (2.3 in)	39.2 mm (1.5 in)	16 years	51 of 100 (Notable)
10 August 1977	Hyden, AU	daily rain	35.2 mm (1.4 in)	20.7 mm (0.8 in)	18 years	50 of 100 (Notable)
10 August 1977	Mozajsk, RU	daily rain	41.6 mm (1.6 in)	27.9 mm (1.1 in)	36 years	50 of 100 (Notable)
10 August 1977	Graham Rock, AU	daily rain	25.4 mm (1.0 in)	17.3 mm (0.7 in)	18 years	49 of 100 (Notable)
10 August 1977	Oakland, AU	daily rain	37.2 mm (1.5 in)	25.3 mm (1.0 in)	27 years	49 of 100 (Notable)
10 August 1977	Barras, BR	daily rain	35.2 mm (1.4 in)	33.0 mm (1.3 in)	59 years	49 of 100 (Notable)
10 August 1977	Redlands, AU	daily rain	36.0 mm (1.4 in)	22.3 mm (0.9 in)	27 years	48 of 100 (Notable)
10 August 1977	Hogsback (Bos), ZA	daily rain	52.8 mm (2.1 in)	19.8 mm (0.8 in)	80 years	48 of 100 (Notable)
10 August 1977	Logansport Cicott St, US	daily rain	50.8 mm (2.0 in)	32.0 mm (1.3 in)	44 years	48 of 100 (Notable)
10 August 1977	Sugozero, RU	daily rain	42.2 mm (1.7 in)	26.0 mm (1.0 in)	19 years	47 of 100 (Notable)
10 August 1977	Sparta, US	daily rain	56.9 mm (2.2 in)	49.8 mm (2.0 in)	8 years	47 of 100 (Notable)
10 August 1977	Telenning Hill, AU	daily rain	28.1 mm (1.1 in)	19.2 mm (0.8 in)	18 years	46 of 100 (Notable)
10 August 1977	Cuballing, AU	monthly rain	51.8 mm (2.0 in)	13.2 mm (0.5 in)	32 years	46 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

1814 to 1977

Records set or tied on this calendar date in each year from 1814 to 1977. 1977 had 786 records.

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

Records on 08-10 in each year
Year	Records
1814	1
1815	1
1838	1
1845	2
1847	1
1849	1
1852	1
1853	1
1857	2
1859	1
1861	2
1862	2
1863	1
1864	1
1869	2
1871	1
1877	1
1879	4
1881	2
1884	2
1885	1
1886	1
1887	1
1888	1
1890	2
1891	6
1892	1
1893	1
1894	5
1895	1
1896	5
1897	7
1898	4
1899	6
1900	6
1901	5
1902	7
1903	8
1904	12
1905	5
1906	16
1907	9
1908	7
1909	33
1910	10
1911	40
1912	39
1913	44
1914	27
1915	26
1916	88
1917	51
1918	43
1919	51
1920	101
1921	66
1922	78
1923	175
1924	245
1925	430
1926	80
1927	294
1928	160
1929	264
1930	299
1931	424
1932	251
1933	305
1934	662
1935	480
1936	487
1937	399
1938	382
1939	593
1940	386
1941	459
1942	420
1943	304
1944	1,006
1945	360
1946	303
1947	766
1948	339
1949	586
1950	324
1951	425
1952	395
1953	431
1954	372
1955	309
1956	522
1957	322
1958	443
1959	528
1960	470
1961	640
1962	761
1963	479
1964	553
1965	700
1966	1,231
1967	766
1968	784
1969	588
1970	702
1971	760
1972	1,175
1973	597
1974	719
1975	664
1976	855
1977	786
1978	495
1979	700
1980	849
1981	857
1982	1,070
1983	915
1984	956
1985	918
1986	535
1987	896
1988	792
1989	1,291
1990	736
1991	819
1992	1,051
1993	774
1994	1,338
1995	1,119
1996	1,027
1997	1,504
1998	1,112
1999	945
2000	990
2001	1,192
2002	1,080
2003	1,556
2004	976
2005	1,225
2006	980
2007	1,476
2008	871
2009	869
2010	1,704
2011	1,247
2012	995
2013	599
2014	516
2015	583
2016	893
2017	636
2018	1,018
2019	754
2020	816
2021	553
2022	687
2023	782
2024	882
2025	659
2026	1,149

Download the Data

Data for records on 1977-08-10: 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 20	576
20 to 40	37
40 to 60	7
60 to 80	1
80 to 100	0
100 to 120	1