Weather Records on 15 August 1987

1,098 weather records were set or tied worldwide on 15 August 1987. Highest significance: Joliet, US.

Key Facts for 15 August 1987

On 15 August 1987, 1,098 weather records were set or tied at long-record stations worldwide.
481 were record highs and 250 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 42 monthly and 1,050 daily.
Joliet set a monthly record daily precipitation of 50.8 mm (2.0 in) on 15 August 1987.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 451 records.

Record Map

1,098 stations

1,098 station records on 15 August 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Joliet	United States	Record daily precipitation	50.8 mm (2.0 in)	61 of 100 (Major)
Heartsease	South Africa	Record daily precipitation	40.0 mm (1.6 in)	59 of 100 (Notable)
Vancleave	United States	Record daily precipitation	261.9 mm (10.3 in)	59 of 100 (Notable)
Norris Madison Pwr House	United States	Record daily precipitation	30.5 mm (1.2 in)	59 of 100 (Notable)
Chewelah	United States	Record daily precipitation	26.4 mm (1.0 in)	58 of 100 (Notable)
Rolla 1NE	United States	Record daily precipitation	69.3 mm (2.7 in)	57 of 100 (Notable)
Tshatsheni (Bos)	South Africa	Record daily precipitation	47.3 mm (1.9 in)	56 of 100 (Notable)
Grayling	United States	Record daily precipitation	53.3 mm (2.1 in)	56 of 100 (Notable)
Heavitree, Estcourt	South Africa	Record daily precipitation	37.8 mm (1.5 in)	55 of 100 (Notable)
Pascagoula 3 NE	United States	Record daily precipitation	182.6 mm (7.2 in)	55 of 100 (Notable)
Waterford	South Africa	Record daily precipitation	53.7 mm (2.1 in)	54 of 100 (Notable)
Lambertina	South Africa	Record daily precipitation	33.0 mm (1.3 in)	53 of 100 (Notable)
Minot Exp STN	United States	Record daily precipitation	60.2 mm (2.4 in)	53 of 100 (Notable)
Brunswick-McKinnon AP	United States	Record daily precipitation	142.5 mm (5.6 in)	53 of 100 (Notable)
Rowena (Bungara)	Australia	Record daily precipitation	38.0 mm (1.5 in)	52 of 100 (Notable)
Cramond, Albert Fall	South Africa	Record daily precipitation	38.6 mm (1.5 in)	52 of 100 (Notable)
The Meadows	South Africa	Record daily precipitation	29.0 mm (1.1 in)	50 of 100 (Notable)
Elphinstone Pocket No1	Australia	Record daily precipitation	35.0 mm (1.4 in)	49 of 100 (Notable)
De Jong Ranch, Howic	South Africa	Record daily precipitation	35.0 mm (1.4 in)	49 of 100 (Notable)
Irapuato	Mexico	Record low minimum temperature	10.0 C (50.0 F)	48 of 100 (Notable)
Highlands	South Africa	Record daily precipitation	34.0 mm (1.3 in)	48 of 100 (Notable)
Bismarck 7 N	United States	Record daily precipitation	54.6 mm (2.1 in)	48 of 100 (Notable)
Snyder	United States	Record daily precipitation	109.2 mm (4.3 in)	48 of 100 (Notable)
Mtn Dell Dam	United States	Record daily precipitation	25.1 mm (1.0 in)	48 of 100 (Notable)
Tuttle	United States	Record daily precipitation	45.5 mm (1.8 in)	47 of 100 (Notable)
Macknade Sugar Mill	Australia	Record daily precipitation	51.0 mm (2.0 in)	46 of 100 (Notable)
Atzalan	Mexico	Record high maximum temperature	30.0 C (86.0 F)	46 of 100 (Notable)
Funnystone	South Africa	Record daily precipitation	32.0 mm (1.3 in)	46 of 100 (Notable)
Van Reenen	South Africa	Record daily precipitation	25.2 mm (1.0 in)	46 of 100 (Notable)
Lowell	United States	Record daily precipitation	68.8 mm (2.7 in)	46 of 100 (Notable)
Bethany	United States	Record daily precipitation	66.5 mm (2.6 in)	46 of 100 (Notable)
Park City G.C.	United States	Record low maximum temperature	15.6 C (60.1 F)	46 of 100 (Notable)
Milwaukee Mitchell AP	United States	Record daily precipitation	60.5 mm (2.4 in)	46 of 100 (Notable)
Guadalupe Y Calvo (Smn)	Mexico	Record daily precipitation	56.9 mm (2.2 in)	45 of 100 (Notable)
Maryville 2E	United States	Record daily precipitation	100.3 mm (3.9 in)	45 of 100 (Notable)
Wewahitchka	United States	Record daily precipitation	48.3 mm (1.9 in)	44 of 100 (Notable)
E Tawas	United States	Record daily precipitation	55.9 mm (2.2 in)	44 of 100 (Notable)
Traverse Cy Cherry Capital AP	United States	Record daily precipitation	38.9 mm (1.5 in)	44 of 100 (Notable)
Tartu	Estonia	Record daily precipitation	36.1 mm (1.4 in)	43 of 100 (Notable)
Lajes Ab	Portugal	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Steeunmekaar (Pol)	South Africa	Record daily precipitation	27.0 mm (1.1 in)	43 of 100 (Notable)
Jackson	United States	Record high minimum temperature	28.3 C (82.9 F)	43 of 100 (Notable)
Ennis	United States	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)
Hansboro 4 NNE	United States	Record daily precipitation	47.5 mm (1.9 in)	43 of 100 (Notable)
Kaneohe Mauka 781	United States	Record low minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Botanic Gardens - Pmb	South Africa	Record daily precipitation	46.0 mm (1.8 in)	42 of 100 (Notable)
Albion	United States	Record high minimum temperature	26.1 C (79.0 F)	42 of 100 (Notable)
Lupton 1S	United States	Record daily precipitation	49.8 mm (2.0 in)	42 of 100 (Notable)
Pawnee City	United States	Record daily precipitation	72.6 mm (2.9 in)	42 of 100 (Notable)
Petrusberg (Pol)	South Africa	Record daily precipitation	40.5 mm (1.6 in)	41 of 100 (Notable)
Sheenspost	South Africa	Record daily precipitation	31.0 mm (1.2 in)	41 of 100 (Notable)
Barcelona -Fabra Observatory	Spain	Record high maximum temperature	38.4 C (101.1 F)	41 of 100 (Notable)
Boras	Sweden	Record low maximum temperature	14.4 C (57.9 F)	41 of 100 (Notable)
Kalkaska	United States	Record daily precipitation	46.7 mm (1.8 in)	41 of 100 (Notable)
Sault Ste Marie Sanderson Fld	United States	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Ladybrand (Skl)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Winburg (Pol)	South Africa	Record daily precipitation	27.0 mm (1.1 in)	40 of 100 (Notable)
Ft Pierce	United States	Record low minimum temperature	18.9 C (66.0 F)	40 of 100 (Notable)
Richmond Post Office	Australia	Record high minimum temperature	19.6 C (67.3 F)	39 of 100 (Notable)
Vectis, Winterton	South Africa	Record daily precipitation	35.0 mm (1.4 in)	39 of 100 (Notable)

Counts by Type and Timescale

1,098 records

Records set or tied on 15 August 1987 by type: Highest daily maximum 156, Lowest daily maximum 164, Highest daily minimum 325, Lowest daily minimum 86, Heaviest daily rainfall 367.

Records on 15 August 1987 by type
Record type	Records
Highest daily maximum	156
Lowest daily maximum	164
Highest daily minimum	325
Lowest daily minimum	86
Heaviest daily rainfall	367
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1987 by timescale: all-time 6, monthly 42, daily 1,050.

How Much Records Were Beaten By

857 broken records

Margins by which the 857 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 117.6. Ties are not counted.

Top 20 by Significance

15 August 1987

Top 20 records on 15 August 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1987	Joliet, US	monthly rain	50.8 mm (2.0 in)	22.4 mm (0.9 in)	26 years	61 of 100 (Major)
15 August 1987	Heartsease, ZA	daily rain	40.0 mm (1.6 in)	40.0 mm (1.6 in)	58 years	59 of 100 (Notable)
15 August 1987	Vancleave, US	monthly rain	261.9 mm (10.3 in)	99.3 mm (3.9 in)	17 years	59 of 100 (Notable)
15 August 1987	Norris Madison Pwr House, US	daily rain	30.5 mm (1.2 in)	20.3 mm (0.8 in)	56 years	59 of 100 (Notable)
15 August 1987	Chewelah, US	daily rain	26.4 mm (1.0 in)	21.3 mm (0.8 in)	56 years	58 of 100 (Notable)
15 August 1987	Rolla 1NE, US	daily rain	69.3 mm (2.7 in)	38.6 mm (1.5 in)	46 years	57 of 100 (Notable)
15 August 1987	Tshatsheni (Bos), ZA	daily rain	47.3 mm (1.9 in)	33.3 mm (1.3 in)	36 years	56 of 100 (Notable)
15 August 1987	Grayling, US	daily rain	53.3 mm (2.1 in)	27.9 mm (1.1 in)	77 years	56 of 100 (Notable)
15 August 1987	Heavitree, Estcourt, ZA	daily rain	37.8 mm (1.5 in)	26.9 mm (1.1 in)	62 years	55 of 100 (Notable)
15 August 1987	Pascagoula 3 NE, US	monthly rain	182.6 mm (7.2 in)	64.7 mm (2.5 in)	17 years	55 of 100 (Notable)
15 August 1987	Waterford, ZA	daily rain	53.7 mm (2.1 in)	30.3 mm (1.2 in)	48 years	54 of 100 (Notable)
15 August 1987	Lambertina, ZA	daily rain	33.0 mm (1.3 in)	26.4 mm (1.0 in)	48 years	53 of 100 (Notable)
15 August 1987	Minot Exp STN, US	daily rain	60.2 mm (2.4 in)	47.2 mm (1.9 in)	18 years	53 of 100 (Notable)
15 August 1987	Brunswick-McKinnon AP, US	daily rain	142.5 mm (5.6 in)	117.6 mm (4.6 in)	32 years	53 of 100 (Notable)
15 August 1987	Rowena (Bungara), AU	daily rain	38.0 mm (1.5 in)	35.2 mm (1.4 in)	16 years	52 of 100 (Notable)
15 August 1987	Cramond, Albert Fall, ZA	daily rain	38.6 mm (1.5 in)	28.4 mm (1.1 in)	54 years	52 of 100 (Notable)
15 August 1987	The Meadows, ZA	daily rain	29.0 mm (1.1 in)	20.6 mm (0.8 in)	48 years	50 of 100 (Notable)
15 August 1987	Elphinstone Pocket No1, AU	daily rain	35.0 mm (1.4 in)	25.9 mm (1.0 in)	20 years	49 of 100 (Notable)
15 August 1987	De Jong Ranch, Howic, ZA	daily rain	35.0 mm (1.4 in)	34.8 mm (1.4 in)	5 years	49 of 100 (Notable)
15 August 1987	Irapuato, MX	daily low min	10.0 C (50.0 F)	2.8 C (5.0 F)	64 years	48 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 1987

Records set or tied on this calendar date in each year from 1793 to 1987. 1987 had 1,098 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 1987-08-15: 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	791
20 to 40	57
40 to 60	6
60 to 80	1
80 to 100	1
100 to 120	1