Weather Records on 25 August 1966

715 weather records were set or tied worldwide on 25 August 1966. Highest significance: Winters 9 NNE, US.

Key Facts for 25 August 1966

On 25 August 1966, 715 weather records were set or tied at long-record stations worldwide.
128 were record highs and 460 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 51 monthly and 664 daily.
Winters 9 NNE set a daily record precipitation of 52.1 mm (2.1 in) on 25 August 1966.
Across 168 earlier years (1796 to 2026) the same calendar date averaged 436 records.

Record Map

715 stations

715 station records on 25 August 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 August 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Winters 9 NNE	United States	Record daily precipitation	52.1 mm (2.1 in)	52 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record daily precipitation	54.6 mm (2.1 in)	47 of 100 (Notable)
Haskell	United States	Record low maximum temperature	16.7 C (62.1 F)	43 of 100 (Notable)
Quanah 2 SW	United States	Record low maximum temperature	18.9 C (66.0 F)	43 of 100 (Notable)
Corsicana	United States	Record low maximum temperature	20.6 C (69.1 F)	42 of 100 (Notable)
Mexia	United States	Record low maximum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Houston Wb City	United States	Record low maximum temperature	23.3 C (73.9 F)	42 of 100 (Notable)
Hachita 1W	United States	Record low minimum temperature	5.6 C (42.1 F)	41 of 100 (Notable)
Brownwood 2NE	United States	Record low maximum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Arnett 3NE	United States	Record low maximum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Hereford	United States	Record low maximum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Kaufman 3 SE	United States	Record low maximum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Mission 4 W	United States	Record daily precipitation	61.7 mm (2.4 in)	39 of 100 (Notable)
Paris	United States	Record low maximum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Zagreb-Gric	Croatia	Record low maximum temperature	14.7 C (58.5 F)	38 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record high maximum temperature	37.2 C (99.0 F)	38 of 100 (Notable)
Lumberton	United States	Record daily precipitation	78.7 mm (3.1 in)	38 of 100 (Notable)
Grapevine Dam	United States	Record low maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Georgetown	United States	Record low maximum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Runge	United States	Record daily precipitation	40.9 mm (1.6 in)	37 of 100 (Notable)
Throckmorton	United States	Record low maximum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Nova Cruz	Brazil	Record daily precipitation	28.3 mm (1.1 in)	36 of 100 (Notable)
Nurnberg	Germany	Record low minimum temperature	3.6 C (38.5 F)	36 of 100 (Notable)
Attabari	India	Record daily precipitation	106.7 mm (4.2 in)	36 of 100 (Notable)
Anadarko 3 E	United States	Record low maximum temperature	27.8 C (82.0 F)	36 of 100 (Notable)
Florence 8 NE	United States	Record daily precipitation	62.7 mm (2.5 in)	36 of 100 (Notable)
Eastland	United States	Record low maximum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Lamesa 1 SSE	United States	Record low maximum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Wills Pt	United States	Record low maximum temperature	20.0 C (68.0 F)	36 of 100 (Notable)
Crosbyton	United States	Record low maximum temperature	18.9 C (66.0 F)	35 of 100 (Notable)
Greenville Kgvl Radio	United States	Record low maximum temperature	19.4 C (66.9 F)	35 of 100 (Notable)
Henrietta	United States	Record low maximum temperature	19.4 C (66.9 F)	35 of 100 (Notable)
Pecos	United States	Record low maximum temperature	20.0 C (68.0 F)	35 of 100 (Notable)
Seymour 3NW	United States	Record low maximum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Houston Wb City	United States	Record low minimum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
Rangia	India	Record daily precipitation	90.0 mm (3.5 in)	34 of 100 (Routine)
Ljubljana Bezigrad	Slovenia	Record low maximum temperature	12.9 C (55.2 F)	34 of 100 (Routine)
Tarnaby	Sweden	Record low minimum temperature	-3.5 C (25.7 F)	34 of 100 (Routine)
Hawthorne AP	United States	Record high maximum temperature	39.4 C (102.9 F)	34 of 100 (Routine)
Bamberg	Germany	Record low minimum temperature	5.2 C (41.4 F)	33 of 100 (Routine)
Talladega	United States	Record low maximum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Hatch	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Flatonia 4SE	United States	Record low minimum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Hillsboro	United States	Record low maximum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Miami	United States	Record low maximum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Plainview	United States	Record low maximum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Weatherford	United States	Record low maximum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Ft Myers Page Fld AP	United States	Record high minimum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
San Angelo	United States	Record low maximum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Heinersreuth-Vollhof	Germany	Record low minimum temperature	5.0 C (41.0 F)	32 of 100 (Routine)
Pine Bluff	United States	Record low minimum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
Milan Exp STN	United States	Record low maximum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Clarksville 2NE	United States	Record low maximum temperature	19.4 C (66.9 F)	32 of 100 (Routine)
Tura	India	Record daily precipitation	130.4 mm (5.1 in)	31 of 100 (Routine)
Livingston	United States	Record low maximum temperature	27.8 C (82.0 F)	31 of 100 (Routine)
Sierraville Rs	United States	Record high minimum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Quakertown	United States	Record high maximum temperature	35.6 C (96.1 F)	31 of 100 (Routine)
Albany	United States	Record low maximum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Gainesville	United States	Record low maximum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Graham	United States	Record low maximum temperature	18.3 C (64.9 F)	31 of 100 (Routine)

Counts by Type and Timescale

715 records

Records set or tied on 25 August 1966 by type: Highest daily maximum 81, Lowest daily maximum 248, Highest daily minimum 47, Lowest daily minimum 212, Heaviest daily rainfall 127.

Records on 25 August 1966 by type
Record type	Records
Highest daily maximum	81
Lowest daily maximum	248
Highest daily minimum	47
Lowest daily minimum	212
Heaviest daily rainfall	127
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 25 August 1966 by timescale: all-time 0, monthly 51, daily 664.

How Much Records Were Beaten By

547 broken records

Margins by which the 547 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.0. Ties are not counted.

Top 20 by Significance

25 August 1966

Top 20 records on 25 August 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 August 1966	Winters 9 NNE, US	daily rain	52.1 mm (2.1 in)	38.6 mm (1.5 in)	55 years	52 of 100 (Notable)
25 August 1966	Isabela Substn, PR	daily rain	54.6 mm (2.1 in)	28.4 mm (1.1 in)	59 years	47 of 100 (Notable)
25 August 1966	Haskell, US	monthly low max	16.7 C (62.1 F)	5.0 C (9.0 F)	46 years	43 of 100 (Notable)
25 August 1966	Quanah 2 SW, US	daily low max	18.9 C (66.0 F)	8.3 C (14.9 F)	55 years	43 of 100 (Notable)
25 August 1966	Corsicana, US	monthly low max	20.6 C (69.1 F)	3.3 C (5.9 F)	51 years	42 of 100 (Notable)
25 August 1966	Mexia, US	daily low max	21.7 C (71.1 F)	6.1 C (11.0 F)	51 years	42 of 100 (Notable)
25 August 1966	Houston Wb City, US	monthly low max	23.3 C (73.9 F)	0.6 C (1.1 F)	74 years	42 of 100 (Notable)
25 August 1966	Hachita 1W, US	daily low min	5.6 C (42.1 F)	6.1 C (11.0 F)	35 years	41 of 100 (Notable)
25 August 1966	Brownwood 2NE, US	monthly low max	19.4 C (66.9 F)	2.8 C (5.0 F)	52 years	41 of 100 (Notable)
25 August 1966	Arnett 3NE, US	daily low max	17.8 C (64.0 F)	7.8 C (14.0 F)	55 years	40 of 100 (Notable)
25 August 1966	Hereford, US	daily low max	20.6 C (69.1 F)	6.1 C (11.0 F)	55 years	39 of 100 (Notable)
25 August 1966	Kaufman 3 SE, US	monthly low max	20.0 C (68.0 F)	3.3 C (5.9 F)	46 years	39 of 100 (Notable)
25 August 1966	Mission 4 W, US	daily rain	61.7 mm (2.4 in)	51.0 mm (2.0 in)	12 years	39 of 100 (Notable)
25 August 1966	Paris, US	monthly low max	18.9 C (66.0 F)	2.2 C (4.0 F)	54 years	39 of 100 (Notable)
25 August 1966	Zagreb-Gric, HR	monthly low max	14.7 C (58.5 F)	0.1 C (0.2 F)	69 years	38 of 100 (Notable)
25 August 1966	Ponce 4 E, PR	daily high max	37.2 C (99.0 F)	2.8 C (5.0 F)	43 years	38 of 100 (Notable)
25 August 1966	Lumberton, US	daily rain	78.7 mm (3.1 in)	41.6 mm (1.6 in)	8 years	38 of 100 (Notable)
25 August 1966	Grapevine Dam, US	monthly low max	20.0 C (68.0 F)	2.2 C (4.0 F)	50 years	38 of 100 (Notable)
25 August 1966	Georgetown, US	daily low max	25.6 C (78.1 F)	4.4 C (7.9 F)	51 years	37 of 100 (Notable)
25 August 1966	Runge, US	daily rain	40.9 mm (1.6 in)	26.9 mm (1.1 in)	56 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

1796 to 1966

Records set or tied on this calendar date in each year from 1796 to 1966. 1966 had 715 records.

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

Records on 08-25 in each year
Year	Records
1796	1
1801	1
1802	1
1807	2
1809	1
1813	1
1814	1
1816	1
1818	2
1837	1
1838	2
1839	1
1848	1
1852	1
1855	2
1859	1
1861	2
1864	1
1867	2
1869	1
1870	1
1871	2
1872	2
1875	1
1876	5
1877	3
1879	3
1880	2
1884	1
1885	2
1886	1
1887	1
1889	1
1890	3
1892	4
1893	8
1894	2
1895	4
1896	2
1897	2
1898	2
1899	5
1900	13
1901	11
1902	6
1903	13
1904	11
1905	12
1906	29
1907	15
1908	13
1909	22
1910	32
1911	32
1912	32
1913	31
1914	30
1915	94
1916	18
1917	65
1918	37
1919	172
1920	174
1921	50
1922	70
1923	117
1924	402
1925	145
1926	224
1927	356
1928	167
1929	174
1930	247
1931	251
1932	270
1933	307
1934	457
1935	317
1936	859
1937	333
1938	620
1939	366
1940	658
1941	474
1942	514
1943	496
1944	589
1945	462
1946	305
1947	627
1948	876
1949	281
1950	327
1951	352
1952	585
1953	461
1954	520
1955	711
1956	273
1957	479
1958	958
1959	576
1960	585
1961	487
1962	398
1963	510
1964	557
1965	401
1966	715
1967	439
1968	596
1969	631
1970	721
1971	628
1972	596
1973	537
1974	466
1975	650
1976	459
1977	731
1978	702
1979	828
1980	750
1981	671
1982	907
1983	1,277
1984	694
1985	1,048
1986	778
1987	1,533
1988	815
1989	918
1990	817
1991	688
1992	1,680
1993	1,137
1994	617
1995	1,206
1996	1,058
1997	1,553
1998	1,138
1999	895
2000	790
2001	1,021
2002	1,073
2003	872
2004	947
2005	874
2006	1,020
2007	1,345
2008	1,026
2009	824
2010	1,321
2011	1,332
2012	709
2013	619
2014	853
2015	1,157
2016	887
2017	432
2018	438
2019	708
2020	931
2021	597
2022	672
2023	1,565
2024	909
2025	1,071
2026	886

Download the Data

Data for records on 1966-08-25: 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	505
10 to 20	23
20 to 30	10
30 to 40	6
40 to 50	2
50 to 60	1