Weather Records on 12 August 1964

1,346 weather records were set or tied worldwide on 12 August 1964. Highest significance: Bremen-Seefahrtschule, DE.

Key Facts for 12 August 1964

On 12 August 1964, 1,346 weather records were set or tied at long-record stations worldwide.
86 were record highs and 904 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 45 monthly and 1,298 daily.
Bremen-Seefahrtschule set an all-time record daily precipitation of 78.5 mm (3.1 in) on 12 August 1964.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 442 records.

Record Map

1,346 stations

1,346 station records on 12 August 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 August 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bremen-Seefahrtschule	Germany	Record daily precipitation	78.5 mm (3.1 in)	70 of 100 (Major)
Soltau	Germany	Record daily precipitation	57.6 mm (2.3 in)	65 of 100 (Major)
Ueckermunde	Germany	Record daily precipitation	55.0 mm (2.2 in)	59 of 100 (Notable)
Aachen	Germany	Record daily precipitation	53.3 mm (2.1 in)	55 of 100 (Notable)
Truxton Canyon	United States	Record daily precipitation	37.3 mm (1.5 in)	55 of 100 (Notable)
Tierhoek	South Africa	Record daily precipitation	178.8 mm (7.0 in)	54 of 100 (Notable)
Florence	United States	Record daily precipitation	71.9 mm (2.8 in)	54 of 100 (Notable)
Ashland	United States	Record daily precipitation	58.2 mm (2.3 in)	54 of 100 (Notable)
Rotenburg (Wumme)	Germany	Record daily precipitation	56.4 mm (2.2 in)	53 of 100 (Notable)
Konigsmoor	Germany	Record daily precipitation	41.1 mm (1.6 in)	52 of 100 (Notable)
Rooirivier (Bos)	South Africa	Record daily precipitation	41.5 mm (1.6 in)	52 of 100 (Notable)
Casa Grande	United States	Record daily precipitation	86.9 mm (3.4 in)	52 of 100 (Notable)
Ignacio 1 N	United States	Record daily precipitation	50.8 mm (2.0 in)	52 of 100 (Notable)
El Rito	United States	Record daily precipitation	41.4 mm (1.6 in)	52 of 100 (Notable)
Winslow AP	United States	Record daily precipitation	52.8 mm (2.1 in)	51 of 100 (Notable)
Palmares	Brazil	Record daily precipitation	161.9 mm (6.4 in)	50 of 100 (Notable)
Zuur Anys	South Africa	Record daily precipitation	79.5 mm (3.1 in)	50 of 100 (Notable)
Alton	United States	Record daily precipitation	45.7 mm (1.8 in)	50 of 100 (Notable)
Junagadh	India	Record daily precipitation	108.7 mm (4.3 in)	49 of 100 (Notable)
Cheviot Fells	South Africa	Record daily precipitation	33.0 mm (1.3 in)	49 of 100 (Notable)
Maysville Wwtp	United States	Record daily precipitation	87.6 mm (3.4 in)	49 of 100 (Notable)
Robertson	South Africa	Record daily precipitation	28.5 mm (1.1 in)	48 of 100 (Notable)
Clifton	South Africa	Record daily precipitation	41.0 mm (1.6 in)	48 of 100 (Notable)
Mohpani	India	Record daily precipitation	241.0 mm (9.5 in)	47 of 100 (Notable)
Luchow	Germany	Record daily precipitation	42.7 mm (1.7 in)	46 of 100 (Notable)
Bareli	India	Record daily precipitation	126.0 mm (5.0 in)	46 of 100 (Notable)
Niphad	India	Record daily precipitation	49.7 mm (2.0 in)	46 of 100 (Notable)
Van Staadens (Rsv)	South Africa	Record daily precipitation	49.0 mm (1.9 in)	46 of 100 (Notable)
Eagle Nest	United States	Record daily precipitation	48.3 mm (1.9 in)	46 of 100 (Notable)
Roomal	India	Record daily precipitation	141.4 mm (5.6 in)	45 of 100 (Notable)
Gavilan	United States	Record daily precipitation	37.1 mm (1.5 in)	45 of 100 (Notable)
Seoni	India	Record daily precipitation	190.4 mm (7.5 in)	44 of 100 (Notable)
Adolphskraal	South Africa	Record daily precipitation	38.0 mm (1.5 in)	43 of 100 (Notable)
Wolwefontein (Pol)	South Africa	Record daily precipitation	28.0 mm (1.1 in)	43 of 100 (Notable)
Abilene	United States	Record low minimum temperature	7.8 C (46.0 F)	43 of 100 (Notable)
Goldberg	Germany	Record daily precipitation	30.1 mm (1.2 in)	42 of 100 (Notable)
Prospect	South Africa	Record daily precipitation	31.0 mm (1.2 in)	42 of 100 (Notable)
Durham	Canada	Record low maximum temperature	13.9 C (57.0 F)	41 of 100 (Notable)
Port Stanley	Canada	Record low maximum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Waren	Germany	Record daily precipitation	32.0 mm (1.3 in)	41 of 100 (Notable)
Harrai	India	Record daily precipitation	222.4 mm (8.8 in)	41 of 100 (Notable)
Grahamstown	South Africa	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Somerset East	South Africa	Record daily precipitation	37.5 mm (1.5 in)	41 of 100 (Notable)
Riva	Italy	Record low maximum temperature	19.0 C (66.2 F)	40 of 100 (Notable)
Ter Apel	Netherlands	Record daily precipitation	41.0 mm (1.6 in)	40 of 100 (Notable)
Bathurst Ns,	South Africa	Record daily precipitation	29.5 mm (1.2 in)	40 of 100 (Notable)
Rabula (Bos)	South Africa	Record daily precipitation	30.5 mm (1.2 in)	40 of 100 (Notable)
Genoa 2 W	United States	Record low minimum temperature	3.9 C (39.0 F)	40 of 100 (Notable)
Regina	United States	Record daily precipitation	36.8 mm (1.4 in)	40 of 100 (Notable)
Camp Crook	United States	Record low minimum temperature	-1.1 C (30.0 F)	40 of 100 (Notable)
Medford	United States	Record low maximum temperature	13.9 C (57.0 F)	40 of 100 (Notable)
Amreli	India	Record daily precipitation	88.9 mm (3.5 in)	39 of 100 (Notable)
Ghansore	India	Record daily precipitation	120.4 mm (4.7 in)	39 of 100 (Notable)
Silverdales	South Africa	Record daily precipitation	41.0 mm (1.6 in)	39 of 100 (Notable)
Broken Bow 2 W	United States	Record low minimum temperature	1.7 C (35.1 F)	39 of 100 (Notable)
Concordia ASOS	United States	Record low minimum temperature	7.2 C (45.0 F)	39 of 100 (Notable)
Umbergaon	India	Record daily precipitation	181.0 mm (7.1 in)	38 of 100 (Notable)
Alur	India	Record daily precipitation	48.3 mm (1.9 in)	38 of 100 (Notable)
Sedalia Wtp	United States	Record low minimum temperature	9.4 C (48.9 F)	38 of 100 (Notable)
Gann Valley 4NW	United States	Record low minimum temperature	1.1 C (34.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

1,346 records

Records set or tied on 12 August 1964 by type: Highest daily maximum 27, Lowest daily maximum 487, Highest daily minimum 59, Lowest daily minimum 417, Heaviest daily rainfall 356.

Records on 12 August 1964 by type
Record type	Records
Highest daily maximum	27
Lowest daily maximum	487
Highest daily minimum	59
Lowest daily minimum	417
Heaviest daily rainfall	356
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 August 1964 by timescale: all-time 3, monthly 45, daily 1,298.

How Much Records Were Beaten By

1,156 broken records

Margins by which the 1,156 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 185.1. Ties are not counted.

Top 20 by Significance

12 August 1964

Top 20 records on 12 August 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 August 1964	Bremen-Seefahrtschule, DE	all-time rain	78.5 mm (3.1 in)	15.7 mm (0.6 in)	54 years	70 of 100 (Major)
12 August 1964	Soltau, DE	daily rain	57.6 mm (2.3 in)	36.7 mm (1.4 in)	63 years	65 of 100 (Major)
12 August 1964	Ueckermunde, DE	daily rain	55.0 mm (2.2 in)	35.0 mm (1.4 in)	43 years	59 of 100 (Notable)
12 August 1964	Aachen, DE	daily rain	53.3 mm (2.1 in)	37.2 mm (1.5 in)	29 years	55 of 100 (Notable)
12 August 1964	Truxton Canyon, US	daily rain	37.3 mm (1.5 in)	32.2 mm (1.3 in)	53 years	55 of 100 (Notable)
12 August 1964	Tierhoek, ZA	monthly rain	178.8 mm (7.0 in)	84.6 mm (3.3 in)	4 years	54 of 100 (Notable)
12 August 1964	Florence, US	all-time rain	71.9 mm (2.8 in)	14.2 mm (0.6 in)	43 years	54 of 100 (Notable)
12 August 1964	Ashland, US	daily rain	58.2 mm (2.3 in)	45.0 mm (1.8 in)	43 years	54 of 100 (Notable)
12 August 1964	Rotenburg (Wumme), DE	daily rain	56.4 mm (2.2 in)	26.0 mm (1.0 in)	34 years	53 of 100 (Notable)
12 August 1964	Konigsmoor, DE	daily rain	41.1 mm (1.6 in)	30.1 mm (1.2 in)	33 years	52 of 100 (Notable)
12 August 1964	Rooirivier (Bos), ZA	daily rain	41.5 mm (1.6 in)	34.6 mm (1.4 in)	25 years	52 of 100 (Notable)
12 August 1964	Casa Grande, US	monthly rain	86.9 mm (3.4 in)	25.9 mm (1.0 in)	34 years	52 of 100 (Notable)
12 August 1964	Ignacio 1 N, US	monthly rain	50.8 mm (2.0 in)	15.7 mm (0.6 in)	42 years	52 of 100 (Notable)
12 August 1964	El Rito, US	daily rain	41.4 mm (1.6 in)	31.2 mm (1.2 in)	23 years	52 of 100 (Notable)
12 August 1964	Winslow AP, US	daily rain	52.8 mm (2.1 in)	37.1 mm (1.5 in)	18 years	51 of 100 (Notable)
12 August 1964	Palmares, BR	all-time rain	161.9 mm (6.4 in)	22.6 mm (0.9 in)	3 years	50 of 100 (Notable)
12 August 1964	Zuur Anys, ZA	daily rain	79.5 mm (3.1 in)	77.2 mm (3.0 in)	25 years	50 of 100 (Notable)
12 August 1964	Alton, US	daily rain	45.7 mm (1.8 in)	29.7 mm (1.2 in)	19 years	50 of 100 (Notable)
12 August 1964	Junagadh, IN	daily rain	108.7 mm (4.3 in)	57.6 mm (2.3 in)	38 years	49 of 100 (Notable)
12 August 1964	Cheviot Fells, ZA	daily rain	33.0 mm (1.3 in)	16.2 mm (0.6 in)	67 years	49 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

1793 to 1964

Records set or tied on this calendar date in each year from 1793 to 1964. 1964 had 1,346 records.

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

Records on 08-12 in each year
Year	Records
1793	1
1796	1
1811	2
1814	1
1815	1
1825	1
1843	1
1851	1
1854	1
1855	2
1856	1
1861	1
1864	3
1865	1
1867	1
1868	1
1871	2
1872	1
1873	1
1874	2
1875	3
1876	2
1879	1
1881	2
1883	1
1884	1
1885	1
1887	2
1888	2
1889	4
1890	4
1891	4
1892	2
1893	1
1894	1
1895	6
1896	2
1897	4
1898	1
1899	10
1900	1
1901	5
1902	9
1903	14
1904	13
1905	16
1906	8
1907	8
1908	31
1909	42
1910	16
1911	33
1912	40
1913	39
1914	26
1915	46
1916	31
1917	134
1918	37
1919	42
1920	26
1921	174
1922	71
1923	89
1924	267
1925	150
1926	154
1927	145
1928	173
1929	276
1930	501
1931	708
1932	418
1933	271
1934	471
1935	408
1936	591
1937	356
1938	237
1939	282
1940	545
1941	481
1942	257
1943	523
1944	595
1945	295
1946	655
1947	729
1948	384
1949	469
1950	442
1951	357
1952	533
1953	227
1954	969
1955	590
1956	265
1957	384
1958	406
1959	388
1960	707
1961	381
1962	466
1963	559
1964	1,346
1965	977
1966	777
1967	1,135
1968	444
1969	629
1970	422
1971	486
1972	473
1973	442
1974	560
1975	593
1976	495
1977	747
1978	571
1979	1,192
1980	692
1981	665
1982	789
1983	923
1984	665
1985	935
1986	615
1987	935
1988	1,518
1989	827
1990	727
1991	726
1992	1,134
1993	936
1994	861
1995	1,654
1996	1,336
1997	1,363
1998	1,215
1999	1,325
2000	741
2001	855
2002	1,345
2003	1,752
2004	1,872
2005	1,085
2006	874
2007	1,209
2008	970
2009	814
2010	1,907
2011	903
2012	910
2013	427
2014	787
2015	757
2016	1,290
2017	533
2018	571
2019	695
2020	730
2021	980
2022	616
2023	779
2024	659
2025	639
2026	849

Download the Data

Data for records on 1964-08-12: 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 25	1,092
25 to 50	45
50 to 75	12
75 to 100	5
100 to 125	1
125 to 150	0
150 to 175	0
175 to 200	1