Weather Records on 15 September 1987

719 weather records were set or tied worldwide on 15 September 1987. Highest significance: Purdum, US.

Key Facts for 15 September 1987

On 15 September 1987, 719 weather records were set or tied at long-record stations worldwide.
441 were record highs and 125 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 30 monthly and 686 daily.
Purdum set a monthly record daily precipitation of 101.6 mm (4.0 in) on 15 September 1987.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 411 records.

Record Map

719 stations

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

Weather records on 15 September 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Purdum	United States	Record daily precipitation	101.6 mm (4.0 in)	69 of 100 (Major)
Halsey 2 W	United States	Record daily precipitation	114.3 mm (4.5 in)	52 of 100 (Notable)
E Lawai 934	United States	Record daily precipitation	34.0 mm (1.3 in)	51 of 100 (Notable)
Estherville 4E	United States	Record daily precipitation	94.0 mm (3.7 in)	49 of 100 (Notable)
Nueva Esperanza	Mexico	Record high minimum temperature	26.7 C (80.1 F)	48 of 100 (Notable)
Wien	Austria	Record high minimum temperature	20.0 C (68.0 F)	45 of 100 (Notable)
Estes Park	United States	Record daily precipitation	27.4 mm (1.1 in)	45 of 100 (Notable)
Durant	United States	Record daily precipitation	74.2 mm (2.9 in)	45 of 100 (Notable)
Drobeta Turnu Severin	Romania	Record high maximum temperature	38.1 C (100.6 F)	44 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high maximum temperature	18.1 C (64.6 F)	43 of 100 (Notable)
Tryon	United States	Record daily precipitation	42.7 mm (1.7 in)	43 of 100 (Notable)
Cape Leeuwin	Australia	Record high minimum temperature	16.5 C (61.7 F)	42 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record high minimum temperature	15.0 C (59.0 F)	42 of 100 (Notable)
Mvenyane (Bos)	South Africa	Record daily precipitation	65.0 mm (2.6 in)	42 of 100 (Notable)
Marshfield 4 WSW	United States	Record daily precipitation	93.2 mm (3.7 in)	42 of 100 (Notable)
O'Neill	United States	Record daily precipitation	49.8 mm (2.0 in)	42 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record high maximum temperature	20.3 C (68.5 F)	41 of 100 (Notable)
Kisinev	Moldova	Record high minimum temperature	19.7 C (67.5 F)	41 of 100 (Notable)
Ainsworth	United States	Record daily precipitation	39.4 mm (1.6 in)	41 of 100 (Notable)
Odesa	Ukraine	Record high maximum temperature	30.0 C (86.0 F)	39 of 100 (Notable)
Sibley	United States	Record daily precipitation	83.3 mm (3.3 in)	39 of 100 (Notable)
Mullen 3S	United States	Record daily precipitation	83.3 mm (3.3 in)	39 of 100 (Notable)
Concrete Ppl Fish STN	United States	Record daily precipitation	27.9 mm (1.1 in)	39 of 100 (Notable)
Herkimer	United States	Record daily precipitation	64.3 mm (2.5 in)	38 of 100 (Notable)
Gothenburg	United States	Record daily precipitation	34.3 mm (1.4 in)	38 of 100 (Notable)
Tularosa	United States	Record low minimum temperature	7.8 C (46.0 F)	38 of 100 (Notable)
Conroe	United States	Record high minimum temperature	24.4 C (75.9 F)	38 of 100 (Notable)
Kremsmuenster	Austria	Record high minimum temperature	18.6 C (65.5 F)	37 of 100 (Notable)
Indio Fire STN	United States	Record low minimum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Hagerstown	United States	Record high minimum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Chama	United States	Record low minimum temperature	-4.4 C (24.1 F)	36 of 100 (Notable)
Kotzebue AP	United States	Record low maximum temperature	2.2 C (36.0 F)	36 of 100 (Notable)
Baia Mare	Romania	Record high minimum temperature	16.5 C (61.7 F)	35 of 100 (Notable)
Feodosiia	Ukraine	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)
Centerville	United States	Record daily precipitation	61.2 mm (2.4 in)	35 of 100 (Notable)
Port Angeles	United States	Record daily precipitation	25.4 mm (1.0 in)	35 of 100 (Notable)
Lajes Ab	Portugal	Record daily precipitation	37.1 mm (1.5 in)	34 of 100 (Routine)
Sedalia Wtp	United States	Record daily precipitation	50.3 mm (2.0 in)	34 of 100 (Routine)
Niobrara	United States	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Marshall	United States	Record daily precipitation	37.3 mm (1.5 in)	34 of 100 (Routine)
Gilbert	United States	Record daily precipitation	119.9 mm (4.7 in)	33 of 100 (Routine)
Creighton	United States	Record daily precipitation	39.6 mm (1.6 in)	33 of 100 (Routine)
Pickstown	United States	Record daily precipitation	92.7 mm (3.6 in)	33 of 100 (Routine)
Budapest	Hungary	Record high minimum temperature	21.6 C (70.9 F)	32 of 100 (Routine)
Calarasi	Romania	Record high minimum temperature	20.1 C (68.2 F)	32 of 100 (Routine)
Ft Dodge 5NNW	United States	Record daily precipitation	58.9 mm (2.3 in)	32 of 100 (Routine)
Ravenna	United States	Record daily precipitation	41.9 mm (1.6 in)	32 of 100 (Routine)
Decatur	United States	Record daily precipitation	29.2 mm (1.1 in)	32 of 100 (Routine)
Honey Grove	United States	Record daily precipitation	67.8 mm (2.7 in)	32 of 100 (Routine)
Yellville 4 N	United States	Record daily precipitation	81.8 mm (3.2 in)	31 of 100 (Routine)
Pocahontas	United States	Record daily precipitation	50.8 mm (2.0 in)	31 of 100 (Routine)
Ozark	United States	Record daily precipitation	78.7 mm (3.1 in)	31 of 100 (Routine)
Caracas-la Mariposa	Venezuela	Record daily precipitation	60.4 mm (2.4 in)	31 of 100 (Routine)
Greenville	United States	Record high minimum temperature	24.4 C (75.9 F)	30 of 100 (Routine)
Denton 2 SE	United States	Record daily precipitation	25.7 mm (1.0 in)	30 of 100 (Routine)
Dutch Harbor	United States	Record low minimum temperature	1.1 C (34.0 F)	30 of 100 (Routine)
Eagle	United States	Record low maximum temperature	2.2 C (36.0 F)	30 of 100 (Routine)
Tashkent	Uzbekistan	Record high minimum temperature	16.5 C (61.7 F)	30 of 100 (Routine)
Tangancicuaro	Mexico	Record low minimum temperature	2.8 C (37.0 F)	29 of 100 (Routine)
Hyannis	United States	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)

Counts by Type and Timescale

719 records

Records set or tied on 15 September 1987 by type: Highest daily maximum 208, Lowest daily maximum 35, Highest daily minimum 233, Lowest daily minimum 90, Heaviest daily rainfall 150, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 15 September 1987 by type
Record type	Records
Highest daily maximum	208
Lowest daily maximum	35
Highest daily minimum	233
Lowest daily minimum	90
Heaviest daily rainfall	150
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 15 September 1987 by timescale: all-time 3, monthly 30, daily 686.

How Much Records Were Beaten By

541 broken records

Margins by which the 541 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 69.6. Ties are not counted.

Top 20 by Significance

15 September 1987

Top 20 records on 15 September 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 1987	Purdum, US	monthly rain	101.6 mm (4.0 in)	41.9 mm (1.6 in)	36 years	69 of 100 (Major)
15 September 1987	Halsey 2 W, US	all-time rain	114.3 mm (4.5 in)	1.3 mm (0.05 in)	77 years	52 of 100 (Notable)
15 September 1987	E Lawai 934, US	daily rain	34.0 mm (1.3 in)	19.3 mm (0.8 in)	78 years	51 of 100 (Notable)
15 September 1987	Estherville 4E, US	daily rain	94.0 mm (3.7 in)	69.6 mm (2.7 in)	0 years	49 of 100 (Notable)
15 September 1987	Nueva Esperanza, MX	daily high min	26.7 C (80.1 F)	3.9 C (7.0 F)	20 years	48 of 100 (Notable)
15 September 1987	Wien, AT	daily high min	20.0 C (68.0 F)	1.7 C (3.1 F)	109 years	45 of 100 (Notable)
15 September 1987	Estes Park, US	daily rain	27.4 mm (1.1 in)	9.6 mm (0.38 in)	68 years	45 of 100 (Notable)
15 September 1987	Durant, US	daily rain	74.2 mm (2.9 in)	42.4 mm (1.7 in)	56 years	45 of 100 (Notable)
15 September 1987	Drobeta Turnu Severin, RO	daily high max	38.1 C (100.6 F)	5.1 C (9.2 F)	81 years	44 of 100 (Notable)
15 September 1987	Col du Grand St-Bernard, CH	daily high max	18.1 C (64.6 F)	2.1 C (3.8 F)	93 years	43 of 100 (Notable)
15 September 1987	Tryon, US	daily rain	42.7 mm (1.7 in)	29.0 mm (1.1 in)	36 years	43 of 100 (Notable)
15 September 1987	Cape Leeuwin, AU	daily high min	16.5 C (61.7 F)	2.6 C (4.7 F)	68 years	42 of 100 (Notable)
15 September 1987	Bjelasnica, BA	daily high min	15.0 C (59.0 F)	3.8 C (6.8 F)	81 years	42 of 100 (Notable)
15 September 1987	Mvenyane (Bos), ZA	monthly rain	65.0 mm (2.6 in)	12.7 mm (0.5 in)	42 years	42 of 100 (Notable)
15 September 1987	Marshfield 4 WSW, US	daily rain	93.2 mm (3.7 in)	43.7 mm (1.7 in)	24 years	42 of 100 (Notable)
15 September 1987	O'Neill, US	daily rain	49.8 mm (2.0 in)	19.1 mm (0.8 in)	62 years	42 of 100 (Notable)
15 September 1987	Bjelasnica, BA	daily high max	20.3 C (68.5 F)	3.5 C (6.3 F)	81 years	41 of 100 (Notable)
15 September 1987	Kisinev, MD	daily high min	19.7 C (67.5 F)	1.8 C (3.2 F)	94 years	41 of 100 (Notable)
15 September 1987	Ainsworth, US	daily rain	39.4 mm (1.6 in)	24.4 mm (1.0 in)	36 years	41 of 100 (Notable)
15 September 1987	Odesa, UA	daily high max	30.0 C (86.0 F)	2.3 C (4.1 F)	81 years	39 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

1797 to 1987

Records set or tied on this calendar date in each year from 1797 to 1987. 1987 had 719 records.

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

Records on 09-15 in each year
Year	Records
1797	1
1803	1
1806	2
1810	1
1816	1
1818	1
1823	2
1833	1
1836	1
1837	2
1839	1
1841	1
1848	1
1850	1
1851	1
1854	2
1856	1
1857	1
1859	1
1864	1
1865	2
1866	1
1867	2
1868	1
1869	1
1872	1
1873	2
1876	2
1877	2
1880	1
1881	1
1882	6
1884	3
1885	4
1886	2
1887	3
1888	1
1889	5
1890	1
1894	4
1895	1
1897	1
1898	3
1899	3
1900	1
1901	12
1902	7
1903	31
1904	30
1905	16
1906	6
1907	7
1908	16
1909	16
1910	2
1911	40
1912	64
1913	43
1914	18
1915	94
1916	44
1917	50
1918	50
1919	52
1920	164
1921	122
1922	53
1923	193
1924	103
1925	112
1926	134
1927	539
1928	86
1929	99
1930	235
1931	422
1932	295
1933	322
1934	351
1935	463
1936	460
1937	337
1938	247
1939	1,098
1940	181
1941	276
1942	278
1943	360
1944	396
1945	418
1946	411
1947	621
1948	557
1949	523
1950	750
1951	283
1952	455
1953	400
1954	518
1955	532
1956	646
1957	449
1958	294
1959	844
1960	410
1961	586
1962	557
1963	455
1964	839
1965	614
1966	534
1967	578
1968	429
1969	362
1970	1,157
1971	598
1972	356
1973	774
1974	386
1975	739
1976	667
1977	400
1978	628
1979	1,022
1980	563
1981	613
1982	1,315
1983	756
1984	766
1985	764
1986	928
1987	719
1988	818
1989	955
1990	911
1991	1,165
1992	919
1993	2,227
1994	1,363
1995	723
1996	1,212
1997	1,177
1998	1,768
1999	858
2000	1,175
2001	837
2002	1,212
2003	855
2004	893
2005	1,123
2006	1,042
2007	946
2008	1,153
2009	773
2010	913
2011	1,170
2012	568
2013	854
2014	443
2015	997
2016	988
2017	825
2018	874
2019	538
2020	785
2021	467
2022	392
2023	507
2024	681
2025	503
2026	779

Download the Data

Data for records on 1987-09-15: 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	475
10 to 20	39
20 to 30	14
30 to 40	5
40 to 50	6
50 to 60	1
60 to 70	1