Weather Records on 12 September 1986

787 weather records were set or tied worldwide on 12 September 1986. Highest significance: Natchez, US.

Key Facts for 12 September 1986

On 12 September 1986, 787 weather records were set or tied at long-record stations worldwide.
214 were record highs and 239 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 775 daily.
Natchez set a daily record precipitation of 97.3 mm (3.8 in) on 12 September 1986.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 411 records.

Record Map

787 stations

787 station records on 12 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Natchez	United States	Record daily precipitation	97.3 mm (3.8 in)	69 of 100 (Major)
Eppingen-Elsenz	Germany	Record daily precipitation	34.8 mm (1.4 in)	61 of 100 (Major)
Strasbourg-Entzheim	France	Record daily precipitation	28.4 mm (1.1 in)	60 of 100 (Major)
Toledo Blade	United States	Record daily precipitation	51.6 mm (2.0 in)	54 of 100 (Notable)
Eppingen	Germany	Record daily precipitation	34.4 mm (1.4 in)	53 of 100 (Notable)
Kalkaska	United States	Record daily precipitation	73.7 mm (2.9 in)	53 of 100 (Notable)
Streaky Bay	Australia	Record daily precipitation	30.0 mm (1.2 in)	50 of 100 (Notable)
Simmern-Wahlbach	Germany	Record daily precipitation	27.8 mm (1.1 in)	50 of 100 (Notable)
Cold Bay AP	United States	Record daily precipitation	48.0 mm (1.9 in)	50 of 100 (Notable)
Grayling	United States	Record daily precipitation	42.7 mm (1.7 in)	49 of 100 (Notable)
Port Gibson 1 NE	United States	Record daily precipitation	72.4 mm (2.9 in)	48 of 100 (Notable)
Karlsruhe	Germany	Record daily precipitation	39.1 mm (1.5 in)	47 of 100 (Notable)
Bad Bergzabern	Germany	Record daily precipitation	38.9 mm (1.5 in)	47 of 100 (Notable)
Sebewaing	United States	Record daily precipitation	68.8 mm (2.7 in)	46 of 100 (Notable)
Saarbrucken/Ensheim	Germany	Record daily precipitation	38.3 mm (1.5 in)	45 of 100 (Notable)
Cambridge City 3 N	United States	Record daily precipitation	54.1 mm (2.1 in)	45 of 100 (Notable)
Saarbrucken-Sankt Johann	Germany	Record daily precipitation	35.2 mm (1.4 in)	44 of 100 (Notable)
Waghausel-Kirrlach	Germany	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Altrier	Luxembourg	Record daily precipitation	28.1 mm (1.1 in)	44 of 100 (Notable)
Berus	Germany	Record daily precipitation	30.5 mm (1.2 in)	43 of 100 (Notable)
Red Bud 2 S	United States	Record daily precipitation	63.8 mm (2.5 in)	42 of 100 (Notable)
Waynesboro	United States	Record daily precipitation	38.6 mm (1.5 in)	42 of 100 (Notable)
Saint Paul Is AP	United States	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Trier-Zewen	Germany	Record daily precipitation	25.7 mm (1.0 in)	41 of 100 (Notable)
Oakley Exp STN	United States	Record daily precipitation	64.5 mm (2.5 in)	41 of 100 (Notable)
Neudenau	Germany	Record daily precipitation	28.8 mm (1.1 in)	40 of 100 (Notable)
Koerich	Luxembourg	Record daily precipitation	26.4 mm (1.0 in)	40 of 100 (Notable)
Bakchar	Russia	Record daily precipitation	27.1 mm (1.1 in)	40 of 100 (Notable)
Athens 2	United States	Record daily precipitation	80.0 mm (3.1 in)	40 of 100 (Notable)
Port Kenny (Mount Cooper)	Australia	Record daily precipitation	27.6 mm (1.1 in)	39 of 100 (Notable)
Trier	Germany	Record daily precipitation	25.7 mm (1.0 in)	39 of 100 (Notable)
Gollhofen	Germany	Record daily precipitation	26.0 mm (1.0 in)	39 of 100 (Notable)
Prairie du Rocher 3 WNW	United States	Record daily precipitation	69.9 mm (2.8 in)	39 of 100 (Notable)
Hale Loud Dam	United States	Record daily precipitation	40.6 mm (1.6 in)	39 of 100 (Notable)
Nashville 1 E	United States	Record daily precipitation	61.2 mm (2.4 in)	38 of 100 (Notable)
Port Kenny (Yandra)	Australia	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Sandilands	Australia	Record daily precipitation	30.4 mm (1.2 in)	37 of 100 (Notable)
Talladega	United States	Record daily precipitation	32.8 mm (1.3 in)	37 of 100 (Notable)
La Grange 1N	United States	Record high minimum temperature	22.8 C (73.0 F)	37 of 100 (Notable)
Lancaster	United States	Record high minimum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Brevard	United States	Record high minimum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
Buenos Aires Observ	Argentina	Record high maximum temperature	31.7 C (89.1 F)	36 of 100 (Notable)
Ohringen	Germany	Record daily precipitation	27.8 mm (1.1 in)	36 of 100 (Notable)
Lorch/Rhein	Germany	Record daily precipitation	27.0 mm (1.1 in)	36 of 100 (Notable)
Falun	Sweden	Record low minimum temperature	-0.1 C (31.8 F)	36 of 100 (Notable)
Armagh	United Kingdom	Record low minimum temperature	1.9 C (35.4 F)	36 of 100 (Notable)
Bolivar	United States	Record high minimum temperature	17.2 C (63.0 F)	36 of 100 (Notable)
Savannah 6 SW	United States	Record daily precipitation	61.7 mm (2.4 in)	36 of 100 (Notable)
Dungowan Station	Australia	Record daily precipitation	30.0 mm (1.2 in)	35 of 100 (Notable)
Greifswald	Germany	Record low maximum temperature	13.0 C (55.4 F)	35 of 100 (Notable)
Murrhardt	Germany	Record daily precipitation	32.9 mm (1.3 in)	35 of 100 (Notable)
Kellogg	United States	Record low minimum temperature	-1.1 C (30.0 F)	35 of 100 (Notable)
Mansfield 5 W	United States	Record daily precipitation	35.3 mm (1.4 in)	35 of 100 (Notable)
Danevang 1 W	United States	Record high minimum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Le Bourget	France	Record low maximum temperature	12.5 C (54.5 F)	34 of 100 (Routine)
Heilbronn	Germany	Record daily precipitation	28.5 mm (1.1 in)	34 of 100 (Routine)
Geroda-Platz	Germany	Record daily precipitation	28.6 mm (1.1 in)	33 of 100 (Routine)
Konigstuhl	Germany	Record daily precipitation	27.0 mm (1.1 in)	33 of 100 (Routine)
Statesville 2 NNE	United States	Record high minimum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Atlanta 5 WNW	United States	Record daily precipitation	64.5 mm (2.5 in)	32 of 100 (Routine)

Counts by Type and Timescale

787 records

Records set or tied on 12 September 1986 by type: Highest daily maximum 51, Lowest daily maximum 110, Highest daily minimum 163, Lowest daily minimum 129, Heaviest daily rainfall 334.

Records on 12 September 1986 by type
Record type	Records
Highest daily maximum	51
Lowest daily maximum	110
Highest daily minimum	163
Lowest daily minimum	129
Heaviest daily rainfall	334
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 September 1986 by timescale: all-time 0, monthly 12, daily 775.

How Much Records Were Beaten By

627 broken records

Margins by which the 627 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 52.8. Ties are not counted.

Top 20 by Significance

12 September 1986

Top 20 records on 12 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 1986	Natchez, US	daily rain	97.3 mm (3.8 in)	52.8 mm (2.1 in)	93 years	69 of 100 (Major)
12 September 1986	Eppingen-Elsenz, DE	daily rain	34.8 mm (1.4 in)	24.8 mm (1.0 in)	55 years	61 of 100 (Major)
12 September 1986	Strasbourg-Entzheim, FR	daily rain	28.4 mm (1.1 in)	20.8 mm (0.8 in)	60 years	60 of 100 (Major)
12 September 1986	Toledo Blade, US	daily rain	51.6 mm (2.0 in)	18.3 mm (0.7 in)	93 years	54 of 100 (Notable)
12 September 1986	Eppingen, DE	daily rain	34.4 mm (1.4 in)	24.5 mm (1.0 in)	28 years	53 of 100 (Notable)
12 September 1986	Kalkaska, US	daily rain	73.7 mm (2.9 in)	49.1 mm (1.9 in)	32 years	53 of 100 (Notable)
12 September 1986	Streaky Bay, AU	daily rain	30.0 mm (1.2 in)	5.4 mm (0.21 in)	99 years	50 of 100 (Notable)
12 September 1986	Simmern-Wahlbach, DE	daily rain	27.8 mm (1.1 in)	20.9 mm (0.8 in)	33 years	50 of 100 (Notable)
12 September 1986	Cold Bay AP, US	daily rain	48.0 mm (1.9 in)	27.2 mm (1.1 in)	35 years	50 of 100 (Notable)
12 September 1986	Grayling, US	daily rain	42.7 mm (1.7 in)	14.8 mm (0.6 in)	85 years	49 of 100 (Notable)
12 September 1986	Port Gibson 1 NE, US	daily rain	72.4 mm (2.9 in)	36.1 mm (1.4 in)	47 years	48 of 100 (Notable)
12 September 1986	Karlsruhe, DE	daily rain	39.1 mm (1.5 in)	12.3 mm (0.5 in)	72 years	47 of 100 (Notable)
12 September 1986	Bad Bergzabern, DE	daily rain	38.9 mm (1.5 in)	27.9 mm (1.1 in)	11 years	47 of 100 (Notable)
12 September 1986	Sebewaing, US	daily rain	68.8 mm (2.7 in)	45.9 mm (1.8 in)	8 years	46 of 100 (Notable)
12 September 1986	Saarbrucken/Ensheim, DE	daily rain	38.3 mm (1.5 in)	25.9 mm (1.0 in)	11 years	45 of 100 (Notable)
12 September 1986	Cambridge City 3 N, US	daily rain	54.1 mm (2.1 in)	10.9 mm (0.4 in)	91 years	45 of 100 (Notable)
12 September 1986	Saarbrucken-Sankt Johann, DE	daily rain	35.2 mm (1.4 in)	19.4 mm (0.8 in)	36 years	44 of 100 (Notable)
12 September 1986	Waghausel-Kirrlach, DE	daily rain	33.0 mm (1.3 in)	23.2 mm (0.9 in)	11 years	44 of 100 (Notable)
12 September 1986	Altrier, LU	daily rain	28.1 mm (1.1 in)	20.6 mm (0.8 in)	28 years	44 of 100 (Notable)
12 September 1986	Berus, DE	daily rain	30.5 mm (1.2 in)	22.6 mm (0.9 in)	28 years	43 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 1986

Records set or tied on this calendar date in each year from 1793 to 1986. 1986 had 787 records.

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

Records on 09-12 in each year
Year	Records
1793	2
1809	1
1813	1
1814	2
1834	1
1837	2
1839	1
1847	1
1848	1
1854	4
1859	2
1860	2
1865	2
1866	1
1867	1
1868	2
1869	1
1872	2
1876	1
1878	1
1880	1
1881	1
1882	1
1884	2
1885	2
1886	1
1887	2
1888	2
1889	1
1891	4
1892	1
1893	4
1894	1
1895	5
1896	2
1897	3
1898	3
1899	4
1900	1
1901	5
1902	11
1903	18
1904	7
1905	8
1906	24
1907	11
1908	12
1909	11
1910	4
1911	15
1912	20
1913	12
1914	49
1915	71
1916	21
1917	231
1918	42
1919	69
1920	49
1921	60
1922	136
1923	33
1924	177
1925	443
1926	89
1927	339
1928	155
1929	118
1930	198
1931	648
1932	199
1933	360
1934	176
1935	441
1936	515
1937	318
1938	332
1939	702
1940	891
1941	172
1942	337
1943	544
1944	393
1945	414
1946	302
1947	596
1948	292
1949	512
1950	578
1951	399
1952	575
1953	515
1954	313
1955	457
1956	389
1957	727
1958	783
1959	536
1960	772
1961	750
1962	407
1963	466
1964	836
1965	459
1966	416
1967	510
1968	428
1969	558
1970	619
1971	593
1972	430
1973	588
1974	575
1975	1,102
1976	539
1977	524
1978	952
1979	765
1980	511
1981	424
1982	993
1983	915
1984	700
1985	876
1986	787
1987	686
1988	997
1989	1,313
1990	1,001
1991	672
1992	767
1993	798
1994	550
1995	532
1996	1,014
1997	737
1998	1,770
1999	938
2000	1,188
2001	797
2002	883
2003	830
2004	653
2005	1,032
2006	963
2007	776
2008	1,213
2009	876
2010	939
2011	988
2012	639
2013	1,066
2014	1,374
2015	704
2016	748
2017	1,114
2018	595
2019	884
2020	566
2021	513
2022	739
2023	844
2024	1,009
2025	433
2026	627

Download the Data

Data for records on 1986-09-12: 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	534
10 to 20	66
20 to 30	17
30 to 40	4
40 to 50	5
50 to 60	1