Weather Records on 15 August 1973

499 weather records were set or tied worldwide on 15 August 1973. Highest significance: Yellowknife A, CA.

Key Facts for 15 August 1973

On 15 August 1973, 499 weather records were set or tied at long-record stations worldwide.
122 were record highs and 153 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 8 monthly and 490 daily.
Yellowknife A set an all-time record daily precipitation of 82.8 mm (3.3 in) on 15 August 1973.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 454 records.

Record Map

499 stations

499 station records on 15 August 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yellowknife A	Canada	Record daily precipitation	82.8 mm (3.3 in)	64 of 100 (Major)
San Sebastian - Igueldo	Spain	Record daily precipitation	71.7 mm (2.8 in)	56 of 100 (Notable)
Dansville	United States	Record daily precipitation	61.5 mm (2.4 in)	53 of 100 (Notable)
Gavriila Buhta	Russia	Record daily precipitation	58.4 mm (2.3 in)	47 of 100 (Notable)
Marion 2 N	United States	Record daily precipitation	55.9 mm (2.2 in)	46 of 100 (Notable)
Clarion 3 SW	United States	Record daily precipitation	67.1 mm (2.6 in)	46 of 100 (Notable)
Le Roy	United States	Record daily precipitation	33.5 mm (1.3 in)	44 of 100 (Notable)
Mae Dagua de Dentro	Brazil	Record daily precipitation	28.3 mm (1.1 in)	43 of 100 (Notable)
Mont-Joli A	Canada	Record daily precipitation	39.6 mm (1.6 in)	43 of 100 (Notable)
Mazapa	Mexico	Record daily precipitation	48.3 mm (1.9 in)	42 of 100 (Notable)
Ft Pierce	United States	Record daily precipitation	59.2 mm (2.3 in)	42 of 100 (Notable)
Lake Konomoc	United States	Record daily precipitation	94.0 mm (3.7 in)	40 of 100 (Notable)
Brockton	United States	Record daily precipitation	85.6 mm (3.4 in)	40 of 100 (Notable)
Cedar Run (River)	United States	Record daily precipitation	64.0 mm (2.5 in)	40 of 100 (Notable)
N Loup	United States	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Romney 1 SW	United States	Record daily precipitation	67.8 mm (2.7 in)	39 of 100 (Notable)
Fall River	United States	Record daily precipitation	86.4 mm (3.4 in)	38 of 100 (Notable)
Portageville 1N	United States	Record daily precipitation	29.2 mm (1.1 in)	38 of 100 (Notable)
Sandusky	United States	Record daily precipitation	57.2 mm (2.3 in)	38 of 100 (Notable)
Valle de Santiago	Mexico	Record daily precipitation	69.6 mm (2.7 in)	35 of 100 (Notable)
Burketown Post Office	Australia	Record high maximum temperature	34.5 C (94.1 F)	34 of 100 (Routine)
Oaklandon Geist Rsvr	United States	Record daily precipitation	62.2 mm (2.4 in)	34 of 100 (Routine)
Price	Canada	Record daily precipitation	28.2 mm (1.1 in)	33 of 100 (Routine)
Umea	Sweden	Record high maximum temperature	26.0 C (78.8 F)	33 of 100 (Routine)
Norwalk Wwtp	United States	Record daily precipitation	46.5 mm (1.8 in)	33 of 100 (Routine)
Juchitan de Zaragoza	Mexico	Record high maximum temperature	41.1 C (106.0 F)	32 of 100 (Routine)
Newton Rigg	United Kingdom	Record high maximum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Durham	United Kingdom	Record high maximum temperature	26.9 C (80.4 F)	32 of 100 (Routine)
Jamestown 2 NW	United States	Record daily precipitation	34.8 mm (1.4 in)	32 of 100 (Routine)
Richmond Post Office	Australia	Record high maximum temperature	35.4 C (95.7 F)	31 of 100 (Routine)
Kokomo 3 WSW	United States	Record daily precipitation	84.3 mm (3.3 in)	31 of 100 (Routine)
Whitestown	United States	Record low maximum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Elk	United States	Record high minimum temperature	16.7 C (62.1 F)	31 of 100 (Routine)
Canton 1 NW	United States	Record daily precipitation	37.6 mm (1.5 in)	31 of 100 (Routine)
Ketchikan AP	United States	Record low minimum temperature	5.0 C (41.0 F)	31 of 100 (Routine)
Utuado	Puerto Rico [United States]	Record low maximum temperature	29.4 C (84.9 F)	30 of 100 (Routine)
Moorestown 4 E	United States	Record high minimum temperature	23.9 C (75.0 F)	30 of 100 (Routine)
Weslaco	United States	Record low maximum temperature	30.6 C (87.1 F)	30 of 100 (Routine)
Cadiz	United States	Record daily precipitation	34.5 mm (1.4 in)	29 of 100 (Routine)
Webster Springs	United States	Record low maximum temperature	23.3 C (73.9 F)	29 of 100 (Routine)
Skovorodino	Russia	Record low maximum temperature	11.5 C (52.7 F)	28 of 100 (Routine)
Junction 4SSW	United States	Record low minimum temperature	15.6 C (60.1 F)	28 of 100 (Routine)
Charters Towers Post Office	Australia	Record high minimum temperature	19.1 C (66.4 F)	27 of 100 (Routine)
Ajojucar	Mexico	Record daily precipitation	30.0 mm (1.2 in)	27 of 100 (Routine)
C.A.E. Llera	Mexico	Record low minimum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Galeton	United States	Record daily precipitation	32.0 mm (1.3 in)	27 of 100 (Routine)
Philippi	United States	Record daily precipitation	37.3 mm (1.5 in)	27 of 100 (Routine)
Syracuse Hancock Intl AP	United States	Record daily precipitation	30.2 mm (1.2 in)	27 of 100 (Routine)
Vitoria Aerodromo	Spain	Record daily precipitation	44.8 mm (1.8 in)	26 of 100 (Routine)
Valley	United Kingdom	Record high minimum temperature	17.1 C (62.8 F)	26 of 100 (Routine)
Lowestoft	United Kingdom	Record high minimum temperature	17.0 C (62.6 F)	26 of 100 (Routine)
Oolitic Purdue Ex Fm	United States	Record low maximum temperature	23.3 C (73.9 F)	26 of 100 (Routine)
Pascagoula 3 NE	United States	Record low maximum temperature	28.3 C (82.9 F)	26 of 100 (Routine)
Gonzales 2S	United States	Record daily precipitation	35.6 mm (1.4 in)	26 of 100 (Routine)
Jefferson	United States	Record daily precipitation	32.3 mm (1.3 in)	26 of 100 (Routine)
Griffiss AFB	United States	Record daily precipitation	25.4 mm (1.0 in)	26 of 100 (Routine)
Denmark	Australia	Record daily precipitation	26.4 mm (1.0 in)	25 of 100 (Routine)
Pyalong West (Cavan Park)	Australia	Record daily precipitation	32.5 mm (1.3 in)	25 of 100 (Routine)
Carcross	Canada	Record low maximum temperature	9.4 C (48.9 F)	25 of 100 (Routine)
Sable Island	Canada	Record low minimum temperature	9.4 C (48.9 F)	25 of 100 (Routine)

Counts by Type and Timescale

499 records

Records set or tied on 15 August 1973 by type: Highest daily maximum 60, Lowest daily maximum 93, Highest daily minimum 62, Lowest daily minimum 60, Heaviest daily rainfall 224.

Records on 15 August 1973 by type
Record type	Records
Highest daily maximum	60
Lowest daily maximum	93
Highest daily minimum	62
Lowest daily minimum	60
Heaviest daily rainfall	224
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1973 by timescale: all-time 1, monthly 8, daily 490.

How Much Records Were Beaten By

393 broken records

Margins by which the 393 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 47.2. Ties are not counted.

Top 20 by Significance

15 August 1973

Top 20 records on 15 August 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1973	Yellowknife A, CA	all-time rain	82.8 mm (3.3 in)	37.6 mm (1.5 in)	3 years	64 of 100 (Major)
15 August 1973	San Sebastian - Igueldo, ES	daily rain	71.7 mm (2.8 in)	47.2 mm (1.9 in)	36 years	56 of 100 (Notable)
15 August 1973	Dansville, US	daily rain	61.5 mm (2.4 in)	46.3 mm (1.8 in)	28 years	53 of 100 (Notable)
15 August 1973	Gavriila Buhta, RU	daily rain	58.4 mm (2.3 in)	35.9 mm (1.4 in)	16 years	47 of 100 (Notable)
15 August 1973	Marion 2 N, US	daily rain	55.9 mm (2.2 in)	20.6 mm (0.8 in)	72 years	46 of 100 (Notable)
15 August 1973	Clarion 3 SW, US	daily rain	67.1 mm (2.6 in)	38.1 mm (1.5 in)	16 years	46 of 100 (Notable)
15 August 1973	Le Roy, US	daily rain	33.5 mm (1.3 in)	18.8 mm (0.7 in)	68 years	44 of 100 (Notable)
15 August 1973	Mae Dagua de Dentro, BR	daily rain	28.3 mm (1.1 in)	28.3 mm (1.1 in)	39 years	43 of 100 (Notable)
15 August 1973	Mont-Joli A, CA	daily rain	39.6 mm (1.6 in)	30.7 mm (1.2 in)	30 years	43 of 100 (Notable)
15 August 1973	Mazapa, MX	daily rain	48.3 mm (1.9 in)	32.8 mm (1.3 in)	6 years	42 of 100 (Notable)
15 August 1973	Ft Pierce, US	daily rain	59.2 mm (2.3 in)	39.1 mm (1.5 in)	39 years	42 of 100 (Notable)
15 August 1973	Lake Konomoc, US	daily rain	94.0 mm (3.7 in)	30.2 mm (1.2 in)	46 years	40 of 100 (Notable)
15 August 1973	Brockton, US	daily rain	85.6 mm (3.4 in)	38.6 mm (1.5 in)	20 years	40 of 100 (Notable)
15 August 1973	Cedar Run (River), US	daily rain	64.0 mm (2.5 in)	37.8 mm (1.5 in)	7 years	40 of 100 (Notable)
15 August 1973	N Loup, US	daily rain	61.0 mm (2.4 in)	20.4 mm (0.8 in)	56 years	39 of 100 (Notable)
15 August 1973	Romney 1 SW, US	daily rain	67.8 mm (2.7 in)	32.2 mm (1.3 in)	19 years	39 of 100 (Notable)
15 August 1973	Fall River, US	daily rain	86.4 mm (3.4 in)	29.0 mm (1.1 in)	46 years	38 of 100 (Notable)
15 August 1973	Portageville 1N, US	daily rain	29.2 mm (1.1 in)	12.7 mm (0.5 in)	62 years	38 of 100 (Notable)
15 August 1973	Sandusky, US	daily rain	57.2 mm (2.3 in)	29.3 mm (1.2 in)	32 years	38 of 100 (Notable)
15 August 1973	Valle de Santiago, MX	monthly rain	69.6 mm (2.7 in)	13.7 mm (0.5 in)	21 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 1973

Records set or tied on this calendar date in each year from 1793 to 1973. 1973 had 499 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 1973-08-15: 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).