Weather Records on 15 September 1986

928 weather records were set or tied worldwide on 15 September 1986. Highest significance: Zerbst, DE.

Key Facts for 15 September 1986

On 15 September 1986, 928 weather records were set or tied at long-record stations worldwide.
204 were record highs and 357 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 44 monthly and 884 daily.
Zerbst set a daily record precipitation of 36.2 mm (1.4 in) on 15 September 1986.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 410 records.

Record Map

928 stations

928 station records on 15 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Zerbst	Germany	Record daily precipitation	36.2 mm (1.4 in)	78 of 100 (Major)
Bernburg/Saale (Nord)	Germany	Record daily precipitation	33.1 mm (1.3 in)	72 of 100 (Major)
Potsdam	Germany	Record daily precipitation	34.3 mm (1.4 in)	70 of 100 (Major)
Aschersleben	Germany	Record daily precipitation	40.0 mm (1.6 in)	67 of 100 (Major)
Brocken	Germany	Record daily precipitation	47.5 mm (1.9 in)	65 of 100 (Major)
Yakima AP	United States	Record daily precipitation	34.5 mm (1.4 in)	59 of 100 (Notable)
Magdeburg	Germany	Record daily precipitation	30.2 mm (1.2 in)	58 of 100 (Notable)
Bad Wildungen	Germany	Record daily precipitation	55.8 mm (2.2 in)	58 of 100 (Notable)
Hilgenroth	Germany	Record daily precipitation	39.8 mm (1.6 in)	56 of 100 (Notable)
Berlin-Dahlem	Germany	Record daily precipitation	30.0 mm (1.2 in)	55 of 100 (Notable)
Kall-Sistig	Germany	Record daily precipitation	40.6 mm (1.6 in)	54 of 100 (Notable)
Gavriila Buhta	Russia	Record daily precipitation	39.8 mm (1.6 in)	54 of 100 (Notable)
Logan 1 WNW	United States	Record daily precipitation	57.2 mm (2.3 in)	54 of 100 (Notable)
Eden (Caravan Park)	Australia	Record daily precipitation	57.2 mm (2.3 in)	53 of 100 (Notable)
Stiege	Germany	Record daily precipitation	55.2 mm (2.2 in)	53 of 100 (Notable)
Witzenhausen	Germany	Record daily precipitation	53.9 mm (2.1 in)	53 of 100 (Notable)
Gilserberg-Moischeid	Germany	Record daily precipitation	60.7 mm (2.4 in)	52 of 100 (Notable)
Arnsberg	Germany	Record daily precipitation	43.7 mm (1.7 in)	52 of 100 (Notable)
Dillenburg	Germany	Record daily precipitation	51.6 mm (2.0 in)	52 of 100 (Notable)
Berlin-Tempelhof	Germany	Record daily precipitation	31.0 mm (1.2 in)	51 of 100 (Notable)
Mayen	Germany	Record daily precipitation	38.5 mm (1.5 in)	51 of 100 (Notable)
Clervaux-Hautbellain	Luxembourg	Record daily precipitation	47.7 mm (1.9 in)	51 of 100 (Notable)
Valladolid (Villanubla)	Spain	Record daily precipitation	49.7 mm (2.0 in)	51 of 100 (Notable)
Fremantle	Australia	Record daily precipitation	25.4 mm (1.0 in)	49 of 100 (Notable)
Twistetal-Muhlhausen	Germany	Record daily precipitation	41.1 mm (1.6 in)	49 of 100 (Notable)
Stillwater 1 SE	United States	Record daily precipitation	36.6 mm (1.4 in)	49 of 100 (Notable)
Ploumanac'h	France	Record daily precipitation	41.8 mm (1.6 in)	48 of 100 (Notable)
Ebeleben	Germany	Record daily precipitation	27.6 mm (1.1 in)	48 of 100 (Notable)
Mehringen	Germany	Record daily precipitation	40.7 mm (1.6 in)	48 of 100 (Notable)
Schulenberg	Germany	Record daily precipitation	42.9 mm (1.7 in)	48 of 100 (Notable)
Weilerswist-Lommersum	Germany	Record daily precipitation	30.7 mm (1.2 in)	47 of 100 (Notable)
Friedrichsbrunn	Germany	Record daily precipitation	57.4 mm (2.3 in)	47 of 100 (Notable)
Elsdorf/Erftkreis	Germany	Record daily precipitation	31.5 mm (1.2 in)	46 of 100 (Notable)
Brandenburg-Gorden	Germany	Record daily precipitation	28.0 mm (1.1 in)	46 of 100 (Notable)
Waurika	United States	Record daily precipitation	63.5 mm (2.5 in)	46 of 100 (Notable)
Barcelos	Portugal	Record daily precipitation	67.0 mm (2.6 in)	45 of 100 (Notable)
Raymond Terrace Post Office	Australia	Record daily precipitation	27.0 mm (1.1 in)	44 of 100 (Notable)
Muncheberg	Germany	Record daily precipitation	26.4 mm (1.0 in)	44 of 100 (Notable)
Wernigerode	Germany	Record daily precipitation	61.1 mm (2.4 in)	44 of 100 (Notable)
Helmstedt	Germany	Record daily precipitation	28.4 mm (1.1 in)	43 of 100 (Notable)
Lamspringe	Germany	Record daily precipitation	41.4 mm (1.6 in)	43 of 100 (Notable)
Vatterode-Grafenstuhl	Germany	Record daily precipitation	36.0 mm (1.4 in)	43 of 100 (Notable)
Holmogadd A	Sweden	Record daily precipitation	28.7 mm (1.1 in)	43 of 100 (Notable)
Luverne	United States	Record daily precipitation	29.0 mm (1.1 in)	43 of 100 (Notable)
Bad Frankenhausen/Kyffhauser	Germany	Record daily precipitation	25.7 mm (1.0 in)	42 of 100 (Notable)
Herzberg	Germany	Record daily precipitation	48.8 mm (1.9 in)	42 of 100 (Notable)
Sondershausen	Germany	Record daily precipitation	30.6 mm (1.2 in)	42 of 100 (Notable)
Clausthal-Zellerfeld	Germany	Record daily precipitation	42.6 mm (1.7 in)	42 of 100 (Notable)
Zamora	Spain	Record daily precipitation	44.3 mm (1.7 in)	42 of 100 (Notable)
Uccle	Belgium	Record low maximum temperature	11.4 C (52.5 F)	41 of 100 (Notable)
Uccle	Belgium	Record daily precipitation	41.6 mm (1.6 in)	41 of 100 (Notable)
Berge	Germany	Record daily precipitation	27.5 mm (1.1 in)	41 of 100 (Notable)
Pipestone	United States	Record daily precipitation	32.5 mm (1.3 in)	41 of 100 (Notable)
Muswellbrook (Lower Hill St)	Australia	Record daily precipitation	28.2 mm (1.1 in)	40 of 100 (Notable)
Amiens-Glisy	France	Record daily precipitation	49.5 mm (1.9 in)	40 of 100 (Notable)
Kassel	Germany	Record daily precipitation	39.7 mm (1.6 in)	40 of 100 (Notable)
Aachen	Germany	Record daily precipitation	36.0 mm (1.4 in)	40 of 100 (Notable)
Detour Village	United States	Record low maximum temperature	9.4 C (48.9 F)	40 of 100 (Notable)
Marion	United States	Record daily precipitation	40.1 mm (1.6 in)	40 of 100 (Notable)
Boorowa Post Office	Australia	Record daily precipitation	30.6 mm (1.2 in)	39 of 100 (Notable)

Counts by Type and Timescale

928 records

Records set or tied on 15 September 1986 by type: Highest daily maximum 69, Lowest daily maximum 259, Highest daily minimum 135, Lowest daily minimum 98, Heaviest daily rainfall 365, Deepest snow cover 2.

Records on 15 September 1986 by type
Record type	Records
Highest daily maximum	69
Lowest daily maximum	259
Highest daily minimum	135
Lowest daily minimum	98
Heaviest daily rainfall	365
Heaviest daily snowfall	0
Deepest snow cover	2

Records on 15 September 1986 by timescale: all-time 0, monthly 44, daily 884.

How Much Records Were Beaten By

774 broken records

Margins by which the 774 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 52.0. Ties are not counted.

Top 20 by Significance

15 September 1986

Top 20 records on 15 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 1986	Zerbst, DE	daily rain	36.2 mm (1.4 in)	23.0 mm (0.9 in)	94 years	78 of 100 (Major)
15 September 1986	Bernburg/Saale (Nord), DE	daily rain	33.1 mm (1.3 in)	20.3 mm (0.8 in)	80 years	72 of 100 (Major)
15 September 1986	Potsdam, DE	daily rain	34.3 mm (1.4 in)	22.4 mm (0.9 in)	72 years	70 of 100 (Major)
15 September 1986	Aschersleben, DE	daily rain	40.0 mm (1.6 in)	31.1 mm (1.2 in)	63 years	67 of 100 (Major)
15 September 1986	Brocken, DE	daily rain	47.5 mm (1.9 in)	27.9 mm (1.1 in)	83 years	65 of 100 (Major)
15 September 1986	Yakima AP, US	monthly rain	34.5 mm (1.4 in)	13.4 mm (0.5 in)	31 years	59 of 100 (Notable)
15 September 1986	Magdeburg, DE	daily rain	30.2 mm (1.2 in)	13.1 mm (0.5 in)	64 years	58 of 100 (Notable)
15 September 1986	Bad Wildungen, DE	monthly rain	55.8 mm (2.2 in)	24.5 mm (1.0 in)	16 years	58 of 100 (Notable)
15 September 1986	Hilgenroth, DE	daily rain	39.8 mm (1.6 in)	25.0 mm (1.0 in)	48 years	56 of 100 (Notable)
15 September 1986	Berlin-Dahlem, DE	daily rain	30.0 mm (1.2 in)	10.7 mm (0.4 in)	83 years	55 of 100 (Notable)
15 September 1986	Kall-Sistig, DE	daily rain	40.6 mm (1.6 in)	27.0 mm (1.1 in)	36 years	54 of 100 (Notable)
15 September 1986	Gavriila Buhta, RU	daily rain	39.8 mm (1.6 in)	28.3 mm (1.1 in)	32 years	54 of 100 (Notable)
15 September 1986	Logan 1 WNW, US	daily rain	57.2 mm (2.3 in)	31.8 mm (1.3 in)	76 years	54 of 100 (Notable)
15 September 1986	Eden (Caravan Park), AU	daily rain	57.2 mm (2.3 in)	17.3 mm (0.7 in)	94 years	53 of 100 (Notable)
15 September 1986	Stiege, DE	monthly rain	55.2 mm (2.2 in)	18.6 mm (0.7 in)	2 years	53 of 100 (Notable)
15 September 1986	Witzenhausen, DE	monthly rain	53.9 mm (2.1 in)	24.4 mm (1.0 in)	2 years	53 of 100 (Notable)
15 September 1986	Gilserberg-Moischeid, DE	monthly rain	60.7 mm (2.4 in)	17.4 mm (0.7 in)	21 years	52 of 100 (Notable)
15 September 1986	Arnsberg, DE	daily rain	43.7 mm (1.7 in)	21.9 mm (0.9 in)	17 years	52 of 100 (Notable)
15 September 1986	Dillenburg, DE	monthly rain	51.6 mm (2.0 in)	15.0 mm (0.6 in)	32 years	52 of 100 (Notable)
15 September 1986	Berlin-Tempelhof, DE	daily rain	31.0 mm (1.2 in)	20.1 mm (0.8 in)	44 years	51 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 1986

Records set or tied on this calendar date in each year from 1797 to 1986. 1986 had 928 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 1986-09-15: 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	660
10 to 20	80
20 to 30	24
30 to 40	6
40 to 50	1
50 to 60	3