Weather Records on 15 August 1971

899 weather records were set or tied worldwide on 15 August 1971. Highest significance: Port Hastings, CA.

Key Facts for 15 August 1971

On 15 August 1971, 899 weather records were set or tied at long-record stations worldwide.
176 were record highs and 158 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 25 monthly and 868 daily.
Port Hastings set a daily record precipitation of 113.8 mm (4.5 in) on 15 August 1971.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 452 records.

Record Map

899 stations

899 station records on 15 August 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Port Hastings	Canada	Record daily precipitation	113.8 mm (4.5 in)	72 of 100 (Major)
Alliston	Canada	Record daily precipitation	127.5 mm (5.0 in)	69 of 100 (Major)
Bunya Bunya	Australia	Record daily precipitation	56.1 mm (2.2 in)	66 of 100 (Major)
Gleneva	Australia	Record daily precipitation	66.0 mm (2.6 in)	66 of 100 (Major)
Barnong	Australia	Record daily precipitation	34.3 mm (1.4 in)	65 of 100 (Major)
Collegeville	Canada	Record daily precipitation	203.2 mm (8.0 in)	65 of 100 (Major)
Halifax	Canada	Record daily precipitation	185.2 mm (7.3 in)	61 of 100 (Major)
Boonara	Australia	Record daily precipitation	26.2 mm (1.0 in)	60 of 100 (Major)
Mount Uniacke	Canada	Record daily precipitation	151.4 mm (6.0 in)	60 of 100 (Major)
Upper Stewiacke	Canada	Record daily precipitation	132.6 mm (5.2 in)	60 of 100 (Major)
Bowes	Australia	Record daily precipitation	63.5 mm (2.5 in)	59 of 100 (Notable)
Sunderland	Australia	Record daily precipitation	61.0 mm (2.4 in)	57 of 100 (Notable)
Sandsprings	Australia	Record daily precipitation	36.8 mm (1.4 in)	56 of 100 (Notable)
Avington	Australia	Record daily precipitation	34.5 mm (1.4 in)	55 of 100 (Notable)
Mullewa	Australia	Record daily precipitation	47.5 mm (1.9 in)	54 of 100 (Notable)
Mumby	Australia	Record daily precipitation	54.6 mm (2.1 in)	53 of 100 (Notable)
Naraling	Australia	Record daily precipitation	52.6 mm (2.1 in)	53 of 100 (Notable)
Nangetty	Australia	Record daily precipitation	37.6 mm (1.5 in)	53 of 100 (Notable)
Tenindewa	Australia	Record daily precipitation	47.8 mm (1.9 in)	53 of 100 (Notable)
Jimbour State School	Australia	Record daily precipitation	30.2 mm (1.2 in)	53 of 100 (Notable)
Baddeck	Canada	Record daily precipitation	94.7 mm (3.7 in)	53 of 100 (Notable)
Hamelin Pool	Australia	Record daily precipitation	40.1 mm (1.6 in)	52 of 100 (Notable)
Nabawa	Australia	Record daily precipitation	44.5 mm (1.8 in)	52 of 100 (Notable)
Lynton	Australia	Record daily precipitation	52.1 mm (2.1 in)	52 of 100 (Notable)
Perangery	Australia	Record daily precipitation	33.5 mm (1.3 in)	52 of 100 (Notable)
Pindar	Australia	Record daily precipitation	36.1 mm (1.4 in)	52 of 100 (Notable)
Yuna	Australia	Record daily precipitation	56.1 mm (2.2 in)	52 of 100 (Notable)
Canna	Australia	Record daily precipitation	40.6 mm (1.6 in)	52 of 100 (Notable)
Oberlin	United States	Record daily precipitation	62.2 mm (2.4 in)	52 of 100 (Notable)
Wurarga	Australia	Record daily precipitation	29.5 mm (1.2 in)	51 of 100 (Notable)
Canna 1	Australia	Record daily precipitation	42.2 mm (1.7 in)	51 of 100 (Notable)
Isseka	Australia	Record daily precipitation	46.5 mm (1.8 in)	51 of 100 (Notable)
Chinchilla Water Treatment Pla	Australia	Record daily precipitation	32.8 mm (1.3 in)	51 of 100 (Notable)
Mallee Vale	Australia	Record daily precipitation	44.5 mm (1.8 in)	50 of 100 (Notable)
Tardun	Australia	Record daily precipitation	35.6 mm (1.4 in)	50 of 100 (Notable)
Yandanooka	Australia	Record daily precipitation	41.1 mm (1.6 in)	50 of 100 (Notable)
Balline	Australia	Record daily precipitation	75.4 mm (3.0 in)	49 of 100 (Notable)
Manarra	Australia	Record daily precipitation	35.1 mm (1.4 in)	49 of 100 (Notable)
Urella	Australia	Record daily precipitation	34.3 mm (1.4 in)	49 of 100 (Notable)
Tenindewa Bindu	Australia	Record daily precipitation	49.3 mm (1.9 in)	49 of 100 (Notable)
Howatharra	Australia	Record daily precipitation	38.9 mm (1.5 in)	49 of 100 (Notable)
Neendalling	Australia	Record daily precipitation	26.4 mm (1.0 in)	49 of 100 (Notable)
Kilkivan Post Office	Australia	Record daily precipitation	47.8 mm (1.9 in)	49 of 100 (Notable)
Greenmount Post Office	Australia	Record daily precipitation	33.5 mm (1.3 in)	49 of 100 (Notable)
Marnhull	Australia	Record daily precipitation	26.2 mm (1.0 in)	49 of 100 (Notable)
Yamma	Australia	Record daily precipitation	41.9 mm (1.6 in)	48 of 100 (Notable)
South Holmwood	Australia	Record daily precipitation	37.1 mm (1.5 in)	48 of 100 (Notable)
Sydney A	Canada	Record daily precipitation	56.9 mm (2.2 in)	47 of 100 (Notable)
Umba	Russia	Record daily precipitation	29.1 mm (1.1 in)	47 of 100 (Notable)
St Petersburg	United States	Record daily precipitation	120.7 mm (4.8 in)	47 of 100 (Notable)
Lamesa 1 SSE	United States	Record daily precipitation	65.0 mm (2.6 in)	46 of 100 (Notable)
Wichita Falls Muni AP	United States	Record daily precipitation	114.8 mm (4.5 in)	46 of 100 (Notable)
Morawa West	Australia	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Vjazemskaja	Russia	Record daily precipitation	85.1 mm (3.4 in)	45 of 100 (Notable)
Mingenew	Australia	Record daily precipitation	37.3 mm (1.5 in)	44 of 100 (Notable)
Boddington Shire	Australia	Record daily precipitation	30.0 mm (1.2 in)	44 of 100 (Notable)
Amistad 5 SSW	United States	Record daily precipitation	69.9 mm (2.8 in)	44 of 100 (Notable)
Hamlin 1SW	United States	Record daily precipitation	87.4 mm (3.4 in)	44 of 100 (Notable)
Ogilvie	Australia	Record daily precipitation	66.0 mm (2.6 in)	43 of 100 (Notable)
Dartmoor	Australia	Record daily precipitation	42.7 mm (1.7 in)	42 of 100 (Notable)

Counts by Type and Timescale

899 records

Records set or tied on 15 August 1971 by type: Highest daily maximum 74, Lowest daily maximum 114, Highest daily minimum 102, Lowest daily minimum 44, Heaviest daily rainfall 565.

Records on 15 August 1971 by type
Record type	Records
Highest daily maximum	74
Lowest daily maximum	114
Highest daily minimum	102
Lowest daily minimum	44
Heaviest daily rainfall	565
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1971 by timescale: all-time 6, monthly 25, daily 868.

How Much Records Were Beaten By

758 broken records

Margins by which the 758 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 93.5. Ties are not counted.

Top 20 by Significance

15 August 1971

Top 20 records on 15 August 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1971	Port Hastings, CA	daily rain	113.8 mm (4.5 in)	82.0 mm (3.2 in)	77 years	72 of 100 (Major)
15 August 1971	Alliston, CA	all-time rain	127.5 mm (5.0 in)	45.7 mm (1.8 in)	21 years	69 of 100 (Major)
15 August 1971	Bunya Bunya, AU	monthly rain	56.1 mm (2.2 in)	20.5 mm (0.8 in)	39 years	66 of 100 (Major)
15 August 1971	Gleneva, AU	monthly rain	66.0 mm (2.6 in)	22.6 mm (0.9 in)	39 years	66 of 100 (Major)
15 August 1971	Barnong, AU	daily rain	34.3 mm (1.4 in)	26.7 mm (1.1 in)	60 years	65 of 100 (Major)
15 August 1971	Collegeville, CA	all-time rain	203.2 mm (8.0 in)	66.8 mm (2.6 in)	2 years	65 of 100 (Major)
15 August 1971	Halifax, CA	monthly rain	185.2 mm (7.3 in)	93.5 mm (3.7 in)	28 years	61 of 100 (Major)
15 August 1971	Boonara, AU	daily rain	26.2 mm (1.0 in)	25.2 mm (1.0 in)	74 years	60 of 100 (Major)
15 August 1971	Mount Uniacke, CA	monthly rain	151.4 mm (6.0 in)	56.1 mm (2.2 in)	23 years	60 of 100 (Major)
15 August 1971	Upper Stewiacke, CA	all-time rain	132.6 mm (5.2 in)	42.2 mm (1.7 in)	3 years	60 of 100 (Major)
15 August 1971	Bowes, AU	monthly rain	63.5 mm (2.5 in)	21.6 mm (0.9 in)	39 years	59 of 100 (Notable)
15 August 1971	Sunderland, AU	monthly rain	61.0 mm (2.4 in)	28.5 mm (1.1 in)	13 years	57 of 100 (Notable)
15 August 1971	Sandsprings, AU	daily rain	36.8 mm (1.4 in)	27.4 mm (1.1 in)	58 years	56 of 100 (Notable)
15 August 1971	Avington, AU	daily rain	34.5 mm (1.4 in)	30.7 mm (1.2 in)	40 years	55 of 100 (Notable)
15 August 1971	Mullewa, AU	daily rain	47.5 mm (1.9 in)	31.5 mm (1.2 in)	25 years	54 of 100 (Notable)
15 August 1971	Mumby, AU	daily rain	54.6 mm (2.1 in)	29.2 mm (1.1 in)	25 years	53 of 100 (Notable)
15 August 1971	Naraling, AU	daily rain	52.6 mm (2.1 in)	33.8 mm (1.3 in)	25 years	53 of 100 (Notable)
15 August 1971	Nangetty, AU	daily rain	37.6 mm (1.5 in)	24.9 mm (1.0 in)	25 years	53 of 100 (Notable)
15 August 1971	Tenindewa, AU	daily rain	47.8 mm (1.9 in)	30.8 mm (1.2 in)	25 years	53 of 100 (Notable)
15 August 1971	Jimbour State School, AU	daily rain	30.2 mm (1.2 in)	19.3 mm (0.8 in)	70 years	53 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 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 899 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 1971-08-15: 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 20	667
20 to 40	76
40 to 60	11
60 to 80	2
80 to 100	2