Weather Records on 21 August 1968

1,014 weather records were set or tied worldwide on 21 August 1968. Highest significance: San Jose, US.

Key Facts for 21 August 1968

On 21 August 1968, 1,014 weather records were set or tied at long-record stations worldwide.
402 were record highs and 356 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 66 monthly and 946 daily.
San Jose set a monthly record daily precipitation of 48.8 mm (1.9 in) on 21 August 1968.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 447 records.

Record Map

1,014 stations

1,014 station records on 21 August 1968 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1968: highest significance records shown on the map
Station	Country	Type	Value	Significance
San Jose	United States	Record daily precipitation	48.8 mm (1.9 in)	68 of 100 (Major)
Odesa	Ukraine	Record daily precipitation	48.3 mm (1.9 in)	65 of 100 (Major)
Port Aux Basques	Canada	Record daily precipitation	48.8 mm (1.9 in)	55 of 100 (Notable)
Canajoharie	United States	Record daily precipitation	42.4 mm (1.7 in)	51 of 100 (Notable)
Ticonderoga	United States	Record daily precipitation	51.1 mm (2.0 in)	50 of 100 (Notable)
Cameron Falls	Canada	Record daily precipitation	59.9 mm (2.4 in)	49 of 100 (Notable)
Shikohabad	India	Record daily precipitation	100.0 mm (3.9 in)	49 of 100 (Notable)
Tobermory	Canada	Record daily precipitation	53.3 mm (2.1 in)	46 of 100 (Notable)
Bombala (Nungatta)	Australia	Record daily precipitation	46.0 mm (1.8 in)	44 of 100 (Notable)
Manihari	India	Record daily precipitation	218.7 mm (8.6 in)	44 of 100 (Notable)
Sikandra Rao	India	Record daily precipitation	123.6 mm (4.9 in)	44 of 100 (Notable)
Miami	United States	Record low maximum temperature	22.2 C (72.0 F)	43 of 100 (Notable)
Premer Post Office	Australia	Record daily precipitation	25.7 mm (1.0 in)	42 of 100 (Notable)
Gilman	United States	Record daily precipitation	43.9 mm (1.7 in)	42 of 100 (Notable)
Cape Otway Lighthouse	Australia	Record daily precipitation	28.2 mm (1.1 in)	41 of 100 (Notable)
Agra	India	Record daily precipitation	92.2 mm (3.6 in)	40 of 100 (Notable)
Port Albert	Australia	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)
Orland	United States	Record daily precipitation	44.7 mm (1.8 in)	38 of 100 (Notable)
Truckee Rs	United States	Record low maximum temperature	10.6 C (51.1 F)	38 of 100 (Notable)
Atlantic City Marina	United States	Record high maximum temperature	33.9 C (93.0 F)	38 of 100 (Notable)
Bishop AP	United States	Record low maximum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Hetch Hetchy	United States	Record low minimum temperature	2.2 C (36.0 F)	36 of 100 (Notable)
Malad	United States	Record low maximum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
Clover Valley	United States	Record low maximum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
Golconda	United States	Record low maximum temperature	15.6 C (60.1 F)	36 of 100 (Notable)
Moorefield 1 SSE	United States	Record high minimum temperature	24.4 C (75.9 F)	36 of 100 (Notable)
Pickens 1	United States	Record high minimum temperature	20.6 C (69.1 F)	36 of 100 (Notable)
Bloomfield	United States	Record daily precipitation	51.1 mm (2.0 in)	35 of 100 (Notable)
Ely AP	United States	Record low maximum temperature	16.7 C (62.1 F)	35 of 100 (Notable)
Bah	India	Record daily precipitation	60.5 mm (2.4 in)	34 of 100 (Routine)
Otatitlan	Mexico	Record daily precipitation	93.0 mm (3.7 in)	34 of 100 (Routine)
Roosevelt 1 S	United States	Record low maximum temperature	24.4 C (75.9 F)	34 of 100 (Routine)
San Carlos Rsvr	United States	Record low maximum temperature	22.8 C (73.0 F)	34 of 100 (Routine)
Castle Rock	United States	Record high minimum temperature	17.2 C (63.0 F)	34 of 100 (Routine)
Montello 2NE	United States	Record low maximum temperature	17.2 C (63.0 F)	34 of 100 (Routine)
Johnstown	United States	Record high minimum temperature	24.4 C (75.9 F)	34 of 100 (Routine)
Cadia Composite	Australia	Record daily precipitation	28.2 mm (1.1 in)	33 of 100 (Routine)
Caribou Island	Canada	Record daily precipitation	78.7 mm (3.1 in)	33 of 100 (Routine)
Twin Falls 3 SE	United States	Record low maximum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Cumberland	United States	Record high minimum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Woodstock	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Reading Wb City	United States	Record high minimum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Mardan South	Australia	Record daily precipitation	26.2 mm (1.0 in)	32 of 100 (Routine)
Yosemite Park HQ	United States	Record low maximum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Cordele	United States	Record high minimum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Chestertown	United States	Record high minimum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Richmond	United States	Record daily precipitation	27.4 mm (1.1 in)	32 of 100 (Routine)
Port Washington	United States	Record high minimum temperature	23.3 C (73.9 F)	32 of 100 (Routine)
Baltimore Customs House	United States	Record high minimum temperature	28.9 C (84.0 F)	32 of 100 (Routine)
Whiteriver 1 SW	United States	Record low maximum temperature	17.2 C (63.0 F)	31 of 100 (Routine)
Barstow	United States	Record low maximum temperature	26.7 C (80.1 F)	31 of 100 (Routine)
Vacaville	United States	Record low maximum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Holly	United States	Record high minimum temperature	22.8 C (73.0 F)	31 of 100 (Routine)
Blackfoot Dam	United States	Record low maximum temperature	14.4 C (57.9 F)	31 of 100 (Routine)
Clarinda	United States	Record high minimum temperature	25.6 C (78.1 F)	31 of 100 (Routine)
Picardy	United States	Record high minimum temperature	26.1 C (79.0 F)	31 of 100 (Routine)
Austin #2	United States	Record low minimum temperature	0.0 C (32.0 F)	31 of 100 (Routine)
Wentworth 2.5 WNW	United States	Record high minimum temperature	26.1 C (79.0 F)	31 of 100 (Routine)
Pjarnu	Estonia	Record daily precipitation	28.7 mm (1.1 in)	30 of 100 (Routine)
Calarasi	Romania	Record low maximum temperature	18.0 C (64.4 F)	30 of 100 (Routine)

Counts by Type and Timescale

1,014 records

Records set or tied on 21 August 1968 by type: Highest daily maximum 108, Lowest daily maximum 266, Highest daily minimum 294, Lowest daily minimum 90, Heaviest daily rainfall 255, Heaviest daily snowfall 1.

Records on 21 August 1968 by type
Record type	Records
Highest daily maximum	108
Lowest daily maximum	266
Highest daily minimum	294
Lowest daily minimum	90
Heaviest daily rainfall	255
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 21 August 1968 by timescale: all-time 2, monthly 66, daily 946.

How Much Records Were Beaten By

780 broken records

Margins by which the 780 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 153.7. Ties are not counted.

Top 20 by Significance

21 August 1968

Top 20 records on 21 August 1968 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1968	San Jose, US	monthly rain	48.8 mm (1.9 in)	30.8 mm (1.2 in)	71 years	68 of 100 (Major)
21 August 1968	Odesa, UA	daily rain	48.3 mm (1.9 in)	42.3 mm (1.7 in)	63 years	65 of 100 (Major)
21 August 1968	Port Aux Basques, CA	daily rain	48.8 mm (1.9 in)	32.5 mm (1.3 in)	51 years	55 of 100 (Notable)
21 August 1968	Canajoharie, US	daily rain	42.4 mm (1.7 in)	39.1 mm (1.5 in)	26 years	51 of 100 (Notable)
21 August 1968	Ticonderoga, US	daily rain	51.1 mm (2.0 in)	25.2 mm (1.0 in)	66 years	50 of 100 (Notable)
21 August 1968	Cameron Falls, CA	daily rain	59.9 mm (2.4 in)	29.7 mm (1.2 in)	41 years	49 of 100 (Notable)
21 August 1968	Shikohabad, IN	daily rain	100.0 mm (3.9 in)	64.9 mm (2.6 in)	46 years	49 of 100 (Notable)
21 August 1968	Tobermory, CA	daily rain	53.3 mm (2.1 in)	34.2 mm (1.3 in)	1 year	46 of 100 (Notable)
21 August 1968	Bombala (Nungatta), AU	daily rain	46.0 mm (1.8 in)	24.7 mm (1.0 in)	67 years	44 of 100 (Notable)
21 August 1968	Manihari, IN	daily rain	218.7 mm (8.6 in)	153.7 mm (6.1 in)	6 years	44 of 100 (Notable)
21 August 1968	Sikandra Rao, IN	daily rain	123.6 mm (4.9 in)	81.7 mm (3.2 in)	10 years	44 of 100 (Notable)
21 August 1968	Miami, US	daily low max	22.2 C (72.0 F)	7.2 C (13.0 F)	47 years	43 of 100 (Notable)
21 August 1968	Premer Post Office, AU	daily rain	25.7 mm (1.0 in)	10.2 mm (0.4 in)	73 years	42 of 100 (Notable)
21 August 1968	Gilman, US	daily rain	43.9 mm (1.7 in)	31.2 mm (1.2 in)	33 years	42 of 100 (Notable)
21 August 1968	Cape Otway Lighthouse, AU	daily rain	28.2 mm (1.1 in)	2.8 mm (0.11 in)	87 years	41 of 100 (Notable)
21 August 1968	Agra, IN	daily rain	92.2 mm (3.6 in)	42.7 mm (1.7 in)	49 years	40 of 100 (Notable)
21 August 1968	Port Albert, AU	monthly rain	53.3 mm (2.1 in)	8.6 mm (0.34 in)	4 years	38 of 100 (Notable)
21 August 1968	Orland, US	monthly rain	44.7 mm (1.8 in)	18.5 mm (0.7 in)	13 years	38 of 100 (Notable)
21 August 1968	Truckee Rs, US	monthly low max	10.6 C (51.1 F)	1.6 C (2.9 F)	61 years	38 of 100 (Notable)
21 August 1968	Atlantic City Marina, US	daily high max	33.9 C (93.0 F)	1.1 C (2.0 F)	84 years	38 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

1800 to 1968

Records set or tied on this calendar date in each year from 1800 to 1968. 1968 had 1,014 records.

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

Records on 08-21 in each year
Year	Records
1800	1
1802	1
1804	1
1807	1
1816	1
1818	1
1832	1
1834	1
1839	3
1843	1
1847	1
1849	3
1850	1
1851	2
1863	1
1866	1
1867	2
1870	3
1871	2
1872	1
1873	1
1876	1
1877	2
1879	2
1884	2
1885	5
1886	1
1887	5
1888	2
1889	3
1890	4
1891	2
1893	4
1894	8
1895	3
1896	2
1897	4
1898	4
1899	7
1900	4
1901	9
1902	8
1903	6
1904	8
1905	4
1906	22
1907	20
1908	13
1909	17
1910	33
1911	19
1912	50
1913	37
1914	24
1915	21
1916	106
1917	101
1918	202
1919	19
1920	59
1921	34
1922	58
1923	111
1924	135
1925	220
1926	227
1927	228
1928	110
1929	234
1930	297
1931	277
1932	264
1933	328
1934	320
1935	318
1936	807
1937	762
1938	239
1939	630
1940	683
1941	180
1942	415
1943	438
1944	346
1945	544
1946	390
1947	954
1948	305
1949	508
1950	958
1951	699
1952	368
1953	331
1954	497
1955	885
1956	701
1957	490
1958	389
1959	704
1960	490
1961	644
1962	469
1963	338
1964	794
1965	455
1966	661
1967	541
1968	1,014
1969	650
1970	373
1971	660
1972	441
1973	438
1974	564
1975	545
1976	756
1977	764
1978	445
1979	778
1980	904
1981	1,015
1982	769
1983	1,407
1984	975
1985	623
1986	1,166
1987	740
1988	889
1989	828
1990	910
1991	828
1992	957
1993	698
1994	968
1995	962
1996	950
1997	1,291
1998	948
1999	717
2000	861
2001	797
2002	965
2003	1,241
2004	1,585
2005	1,071
2006	797
2007	1,829
2008	1,012
2009	1,319
2010	1,155
2011	1,022
2012	990
2013	513
2014	624
2015	651
2016	890
2017	347
2018	816
2019	631
2020	1,147
2021	767
2022	917
2023	1,826
2024	777
2025	1,230
2026	1,289

Download the Data

Data for records on 1968-08-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	749
20 to 40	25
40 to 60	2
60 to 80	2
80 to 100	1
100 to 120	0
120 to 140	0
140 to 160	1