Weather Records on 15 August 1966

340 weather records were set or tied worldwide on 15 August 1966. Highest significance: South Johnstone Exp STN, AU.

Key Facts for 15 August 1966

On 15 August 1966, 340 weather records were set or tied at long-record stations worldwide.
80 were record highs and 82 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 336 daily.
South Johnstone Exp STN set a daily record precipitation of 76.2 mm (3.0 in) on 15 August 1966.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 455 records.

Record Map

340 stations

340 station records on 15 August 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
South Johnstone Exp STN	Australia	Record daily precipitation	76.2 mm (3.0 in)	53 of 100 (Notable)
Itaberaba	Brazil	Record daily precipitation	31.3 mm (1.2 in)	53 of 100 (Notable)
Sloan 3 S	United States	Record daily precipitation	95.3 mm (3.8 in)	52 of 100 (Notable)
Renovo	United States	Record daily precipitation	47.5 mm (1.9 in)	48 of 100 (Notable)
Inverness 3 SE	United States	Record daily precipitation	51.3 mm (2.0 in)	46 of 100 (Notable)
Confluence 1 NW	United States	Record daily precipitation	73.7 mm (2.9 in)	46 of 100 (Notable)
Bemetara	India	Record daily precipitation	192.0 mm (7.6 in)	45 of 100 (Notable)
Bingil Bay	Australia	Record daily precipitation	62.0 mm (2.4 in)	41 of 100 (Notable)
Koyah	India	Record daily precipitation	105.2 mm (4.1 in)	41 of 100 (Notable)
Marshall	United States	Record daily precipitation	53.8 mm (2.1 in)	40 of 100 (Notable)
Cedar Run (River)	United States	Record daily precipitation	26.2 mm (1.0 in)	39 of 100 (Notable)
Tully Sugar Mill	Australia	Record daily precipitation	134.6 mm (5.3 in)	38 of 100 (Notable)
Hoshangabad	India	Record daily precipitation	154.0 mm (6.1 in)	38 of 100 (Notable)
Lynnville 4 SSW	United States	Record daily precipitation	55.9 mm (2.2 in)	38 of 100 (Notable)
Monroe	United States	Record daily precipitation	44.2 mm (1.7 in)	37 of 100 (Notable)
Lock Haven	United States	Record daily precipitation	43.7 mm (1.7 in)	37 of 100 (Notable)
White Lake	United States	Record daily precipitation	58.4 mm (2.3 in)	37 of 100 (Notable)
Russell	Canada	Record daily precipitation	25.7 mm (1.0 in)	36 of 100 (Notable)
Franklin	United States	Record daily precipitation	35.6 mm (1.4 in)	36 of 100 (Notable)
Rani(Ranigoda)	India	Record daily precipitation	101.6 mm (4.0 in)	35 of 100 (Notable)
Edmonton 3 W	United States	Record daily precipitation	55.9 mm (2.2 in)	35 of 100 (Notable)
Arlington	United States	Record daily precipitation	48.8 mm (1.9 in)	35 of 100 (Notable)
Wisconsin Dells Wwtp	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Hancock Exp Farm	United States	Record daily precipitation	68.6 mm (2.7 in)	33 of 100 (Routine)
Chingleput	India	Record daily precipitation	43.1 mm (1.7 in)	32 of 100 (Routine)
Tracy	United States	Record daily precipitation	46.5 mm (1.8 in)	32 of 100 (Routine)
Innisfail	Australia	Record daily precipitation	50.5 mm (2.0 in)	31 of 100 (Routine)
Ibimirim (Jeritaco)	Brazil	Record daily precipitation	25.1 mm (1.0 in)	31 of 100 (Routine)
Huell	Germany	Record daily precipitation	30.5 mm (1.2 in)	31 of 100 (Routine)
Lake Alfred Exp STN	United States	Record high minimum temperature	25.6 C (78.1 F)	31 of 100 (Routine)
Acmetonia Lock 3	United States	Record daily precipitation	42.9 mm (1.7 in)	31 of 100 (Routine)
Turbine	Canada	Record daily precipitation	32.8 mm (1.3 in)	30 of 100 (Routine)
Aldersbach-Kriestorf	Germany	Record daily precipitation	31.5 mm (1.2 in)	30 of 100 (Routine)
Armagh	United Kingdom	Record low minimum temperature	4.0 C (39.2 F)	30 of 100 (Routine)
Ludington 4 SE	United States	Record daily precipitation	43.9 mm (1.7 in)	30 of 100 (Routine)
Wentworth 2.5 WNW	United States	Record daily precipitation	25.7 mm (1.0 in)	30 of 100 (Routine)
Everett	United States	Record low minimum temperature	4.4 C (39.9 F)	30 of 100 (Routine)
Clay	United States	Record daily precipitation	47.0 mm (1.9 in)	30 of 100 (Routine)
Innsbruck	Austria	Record daily precipitation	37.9 mm (1.5 in)	29 of 100 (Routine)
Munchen-Nymphenburg	Germany	Record daily precipitation	29.5 mm (1.2 in)	29 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record high maximum temperature	34.6 C (94.3 F)	29 of 100 (Routine)
Lancaster	United States	Record daily precipitation	49.0 mm (1.9 in)	29 of 100 (Routine)
Taloda	India	Record daily precipitation	54.0 mm (2.1 in)	28 of 100 (Routine)
Garhshankar	India	Record daily precipitation	80.2 mm (3.2 in)	28 of 100 (Routine)
Lake Mills Wwtp	United States	Record daily precipitation	57.2 mm (2.3 in)	28 of 100 (Routine)
Oshkosh	United States	Record daily precipitation	65.8 mm (2.6 in)	28 of 100 (Routine)
Morsi	India	Record daily precipitation	51.1 mm (2.0 in)	27 of 100 (Routine)
Lowestoft	United Kingdom	Record low minimum temperature	6.1 C (43.0 F)	27 of 100 (Routine)
Creekside	United States	Record daily precipitation	35.6 mm (1.4 in)	27 of 100 (Routine)
Sirkali	India	Record daily precipitation	64.0 mm (2.5 in)	26 of 100 (Routine)
De Bilt	Netherlands	Record low minimum temperature	6.1 C (43.0 F)	26 of 100 (Routine)
Greensburg	United States	Record daily precipitation	45.5 mm (1.8 in)	26 of 100 (Routine)
Long Branch-Oakhurst	United States	Record daily precipitation	38.9 mm (1.5 in)	26 of 100 (Routine)
Natrona Lock 4	United States	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Nawanshahr	India	Record daily precipitation	106.8 mm (4.2 in)	25 of 100 (Routine)
Newton	United States	Record daily precipitation	25.9 mm (1.0 in)	25 of 100 (Routine)
Clearfield	United States	Record daily precipitation	29.0 mm (1.1 in)	25 of 100 (Routine)
Connellsville	United States	Record daily precipitation	63.5 mm (2.5 in)	25 of 100 (Routine)
Gettysburg	United States	Record low maximum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
Mourilyan Post Office	Australia	Record daily precipitation	81.5 mm (3.2 in)	24 of 100 (Routine)

Counts by Type and Timescale

340 records

Records set or tied on 15 August 1966 by type: Highest daily maximum 33, Lowest daily maximum 50, Highest daily minimum 47, Lowest daily minimum 32, Heaviest daily rainfall 178.

Records on 15 August 1966 by type
Record type	Records
Highest daily maximum	33
Lowest daily maximum	50
Highest daily minimum	47
Lowest daily minimum	32
Heaviest daily rainfall	178
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1966 by timescale: all-time 0, monthly 4, daily 336.

How Much Records Were Beaten By

273 broken records

Margins by which the 273 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.0. Ties are not counted.

Top 20 by Significance

15 August 1966

Top 20 records on 15 August 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1966	South Johnstone Exp STN, AU	daily rain	76.2 mm (3.0 in)	39.4 mm (1.6 in)	40 years	53 of 100 (Notable)
15 August 1966	Itaberaba, BR	monthly rain	31.3 mm (1.2 in)	9.4 mm (0.37 in)	45 years	53 of 100 (Notable)
15 August 1966	Sloan 3 S, US	daily rain	95.3 mm (3.8 in)	39.7 mm (1.6 in)	71 years	52 of 100 (Notable)
15 August 1966	Renovo, US	daily rain	47.5 mm (1.9 in)	36.1 mm (1.4 in)	36 years	48 of 100 (Notable)
15 August 1966	Inverness 3 SE, US	daily rain	51.3 mm (2.0 in)	35.8 mm (1.4 in)	61 years	46 of 100 (Notable)
15 August 1966	Confluence 1 NW, US	daily rain	73.7 mm (2.9 in)	23.9 mm (0.9 in)	60 years	46 of 100 (Notable)
15 August 1966	Bemetara, IN	monthly rain	192.0 mm (7.6 in)	44.2 mm (1.7 in)	25 years	45 of 100 (Notable)
15 August 1966	Bingil Bay, AU	daily rain	62.0 mm (2.4 in)	40.7 mm (1.6 in)	23 years	41 of 100 (Notable)
15 August 1966	Koyah, IN	daily rain	105.2 mm (4.1 in)	40.7 mm (1.6 in)	47 years	41 of 100 (Notable)
15 August 1966	Marshall, US	daily rain	53.8 mm (2.1 in)	34.2 mm (1.3 in)	8 years	40 of 100 (Notable)
15 August 1966	Cedar Run (River), US	daily rain	26.2 mm (1.0 in)	16.0 mm (0.6 in)	68 years	39 of 100 (Notable)
15 August 1966	Tully Sugar Mill, AU	daily rain	134.6 mm (5.3 in)	78.0 mm (3.1 in)	3 years	38 of 100 (Notable)
15 August 1966	Hoshangabad, IN	daily rain	154.0 mm (6.1 in)	49.4 mm (1.9 in)	49 years	38 of 100 (Notable)
15 August 1966	Lynnville 4 SSW, US	daily rain	55.9 mm (2.2 in)	18.8 mm (0.7 in)	64 years	38 of 100 (Notable)
15 August 1966	Monroe, US	daily rain	44.2 mm (1.7 in)	27.4 mm (1.1 in)	15 years	37 of 100 (Notable)
15 August 1966	Lock Haven, US	daily rain	43.7 mm (1.7 in)	16.0 mm (0.6 in)	63 years	37 of 100 (Notable)
15 August 1966	White Lake, US	daily rain	58.4 mm (2.3 in)	36.3 mm (1.4 in)	15 years	37 of 100 (Notable)
15 August 1966	Russell, CA	daily rain	25.7 mm (1.0 in)	14.0 mm (0.6 in)	44 years	36 of 100 (Notable)
15 August 1966	Franklin, US	daily rain	35.6 mm (1.4 in)	10.2 mm (0.4 in)	68 years	36 of 100 (Notable)
15 August 1966	Rani(Ranigoda), IN	daily rain	101.6 mm (4.0 in)	27.9 mm (1.1 in)	52 years	35 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 1966

Records set or tied on this calendar date in each year from 1793 to 1966. 1966 had 340 records.

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

Records on 08-15 in each year
Year	Records
1793	2
1802	1
1805	1
1812	1
1821	1
1838	2
1839	1
1841	1
1844	1
1845	3
1852	1
1854	1
1856	1
1858	1
1861	3
1867	1
1868	2
1869	1
1873	2
1875	1
1876	2
1877	1
1878	1
1879	1
1880	3
1881	2
1882	2
1883	1
1884	2
1885	3
1886	1
1887	1
1888	3
1890	2
1891	2
1892	3
1893	3
1895	1
1896	9
1897	3
1898	1
1899	2
1900	6
1901	5
1902	10
1903	5
1904	17
1905	26
1906	8
1907	14
1908	15
1909	30
1910	16
1911	26
1912	34
1913	42
1914	11
1915	26
1916	223
1917	32
1918	23
1919	22
1920	59
1921	55
1922	86
1923	116
1924	220
1925	91
1926	115
1927	223
1928	271
1929	586
1930	274
1931	351
1932	368
1933	268
1934	992
1935	414
1936	867
1937	574
1938	681
1939	450
1940	372
1941	289
1942	377
1943	426
1944	610
1945	433
1946	285
1947	559
1948	366
1949	559
1950	317
1951	597
1952	596
1953	449
1954	481
1955	539
1956	390
1957	355
1958	1,092
1959	515
1960	417
1961	704
1962	1,052
1963	972
1964	1,185
1965	535
1966	340
1967	687
1968	1,002
1969	583
1970	382
1971	899
1972	613
1973	499
1974	512
1975	490
1976	1,345
1977	550
1978	841
1979	1,788
1980	745
1981	588
1982	479
1983	955
1984	622
1985	915
1986	1,283
1987	1,098
1988	1,479
1989	495
1990	758
1991	778
1992	1,638
1993	831
1994	1,073
1995	1,298
1996	929
1997	927
1998	861
1999	956
2000	932
2001	1,254
2002	1,307
2003	1,248
2004	1,424
2005	1,067
2006	923
2007	1,317
2008	964
2009	1,038
2010	1,622
2011	770
2012	654
2013	711
2014	583
2015	759
2016	707
2017	532
2018	328
2019	435
2020	1,327
2021	900
2022	692
2023	1,414
2024	729
2025	772
2026	975

Download the Data

Data for records on 1966-08-15: 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	209
10 to 20	34
20 to 30	15
30 to 40	9
40 to 50	5
50 to 60	0
60 to 70	0
70 to 80	1