Weather Records on 17 September 1986

1,314 weather records were set or tied worldwide on 17 September 1986. Highest significance: Brookings 2 NE, US.

Key Facts for 17 September 1986

On 17 September 1986, 1,314 weather records were set or tied at long-record stations worldwide.
160 were record highs and 609 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 37 monthly and 1,273 daily.
Brookings 2 NE set a monthly record daily precipitation of 104.4 mm (4.1 in) on 17 September 1986.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 417 records.

Record Map

1,314 stations

1,314 station records on 17 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Brookings 2 NE	United States	Record daily precipitation	104.4 mm (4.1 in)	84 of 100 (Exceptional)
Sonnblick	Austria	Record daily precipitation	156.1 mm (6.1 in)	83 of 100 (Exceptional)
Mingachevir	Azerbaijan	Record daily precipitation	95.1 mm (3.7 in)	70 of 100 (Major)
Wingaroo	Australia	Record daily precipitation	39.4 mm (1.6 in)	66 of 100 (Major)
Napoleon	United States	Record daily precipitation	39.4 mm (1.6 in)	66 of 100 (Major)
Canby	United States	Record daily precipitation	85.1 mm (3.4 in)	65 of 100 (Major)
Arlington 1 W	United States	Record daily precipitation	107.2 mm (4.2 in)	64 of 100 (Major)
Luverne	United States	Record daily precipitation	71.6 mm (2.8 in)	62 of 100 (Major)
Bendigo Prison	Australia	Record daily precipitation	41.5 mm (1.6 in)	59 of 100 (Notable)
Nowata	United States	Record daily precipitation	129.5 mm (5.1 in)	59 of 100 (Notable)
Vinita 2 N	United States	Record daily precipitation	100.6 mm (4.0 in)	59 of 100 (Notable)
Bartlesville Muni AP	United States	Record daily precipitation	107.4 mm (4.2 in)	59 of 100 (Notable)
Caniambo	Australia	Record daily precipitation	41.0 mm (1.6 in)	55 of 100 (Notable)
Pipestone	United States	Record daily precipitation	73.4 mm (2.9 in)	54 of 100 (Notable)
Chambers	United States	Record daily precipitation	62.2 mm (2.4 in)	54 of 100 (Notable)
Jixi	China	Record daily precipitation	48.8 mm (1.9 in)	52 of 100 (Notable)
Sedan	United States	Record daily precipitation	70.9 mm (2.8 in)	52 of 100 (Notable)
Lockwood	United States	Record daily precipitation	93.2 mm (3.7 in)	52 of 100 (Notable)
Lexton	Australia	Record daily precipitation	31.0 mm (1.2 in)	51 of 100 (Notable)
Cherdyn'	Russia	Record daily precipitation	28.1 mm (1.1 in)	51 of 100 (Notable)
Bloomfield	United States	Record daily precipitation	44.2 mm (1.7 in)	50 of 100 (Notable)
Hulah Dam	United States	Record daily precipitation	79.2 mm (3.1 in)	49 of 100 (Notable)
Wedderburn (Post Office)	Australia	Record daily precipitation	30.0 mm (1.2 in)	48 of 100 (Notable)
Schwarzburg	Germany	Record daily precipitation	26.2 mm (1.0 in)	48 of 100 (Notable)
Mena	United States	Record daily precipitation	91.7 mm (3.6 in)	48 of 100 (Notable)
Happy Camp Rs	United States	Record daily precipitation	31.8 mm (1.3 in)	48 of 100 (Notable)
Atkinson 3SW	United States	Record daily precipitation	114.3 mm (4.5 in)	48 of 100 (Notable)
Mitchell 2 N	United States	Record daily precipitation	65.3 mm (2.6 in)	48 of 100 (Notable)
Korong Vale (Post Office)	Australia	Record daily precipitation	26.8 mm (1.1 in)	47 of 100 (Notable)
Vanersborg	Sweden	Record low minimum temperature	-1.6 C (29.1 F)	47 of 100 (Notable)
Beaufort	Australia	Record daily precipitation	28.0 mm (1.1 in)	46 of 100 (Notable)
Tenosique (Smn)	Mexico	Record low minimum temperature	18.9 C (66.0 F)	46 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record low minimum temperature	18.9 C (66.0 F)	46 of 100 (Notable)
Marshall	United States	Record daily precipitation	67.8 mm (2.7 in)	46 of 100 (Notable)
Clunes	Australia	Record daily precipitation	26.2 mm (1.0 in)	45 of 100 (Notable)
Crater Lake Nps HQ	United States	Record daily snowfall	17.8 cm (7.0 in)	45 of 100 (Notable)
Milbank 4 NW	United States	Record daily precipitation	42.4 mm (1.7 in)	45 of 100 (Notable)
Superior	United States	Record daily precipitation	41.9 mm (1.6 in)	45 of 100 (Notable)
Sheffield	United Kingdom	Record low minimum temperature	2.3 C (36.1 F)	44 of 100 (Notable)
Leipzig-Holzhausen	Germany	Record low maximum temperature	10.0 C (50.0 F)	43 of 100 (Notable)
Tyler	United States	Record daily precipitation	49.5 mm (1.9 in)	43 of 100 (Notable)
Flandreau	United States	Record daily precipitation	63.0 mm (2.5 in)	43 of 100 (Notable)
Casterton (Warrock)	Australia	Record daily precipitation	34.5 mm (1.4 in)	42 of 100 (Notable)
Fayetteville Exp STN	United States	Record daily precipitation	63.0 mm (2.5 in)	42 of 100 (Notable)
Orleans	United States	Record daily precipitation	31.8 mm (1.3 in)	42 of 100 (Notable)
Walnut 4S	United States	Record daily precipitation	37.1 mm (1.5 in)	42 of 100 (Notable)
Montpelier	United States	Record daily precipitation	41.4 mm (1.6 in)	42 of 100 (Notable)
Jena Sternwarte	Germany	Record low maximum temperature	10.0 C (50.0 F)	41 of 100 (Notable)
Schwandorf	Germany	Record daily precipitation	27.1 mm (1.1 in)	41 of 100 (Notable)
Hominy	United States	Record daily precipitation	70.9 mm (2.8 in)	41 of 100 (Notable)
Dunolly	Australia	Record daily precipitation	25.8 mm (1.0 in)	40 of 100 (Notable)
Pyalong West (Cavan Park)	Australia	Record daily precipitation	37.5 mm (1.5 in)	40 of 100 (Notable)
Gorlitz	Germany	Record low maximum temperature	10.2 C (50.4 F)	40 of 100 (Notable)
Lady Barron (Franklin Parade)	Australia	Record daily precipitation	28.2 mm (1.1 in)	39 of 100 (Notable)
Goulburn River @ Shepparton	Australia	Record daily precipitation	25.2 mm (1.0 in)	38 of 100 (Notable)
Dergholm (Hillgrove)	Australia	Record daily precipitation	35.6 mm (1.4 in)	38 of 100 (Notable)
Skegness	United Kingdom	Record low minimum temperature	3.9 C (39.0 F)	38 of 100 (Notable)
Sawyers Bar Rs	United States	Record daily precipitation	34.5 mm (1.4 in)	38 of 100 (Notable)
Lowville	United States	Record low maximum temperature	10.6 C (51.1 F)	38 of 100 (Notable)
Agdam	Azerbaijan	Record daily precipitation	28.8 mm (1.1 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,314 records

Records set or tied on 17 September 1986 by type: Highest daily maximum 69, Lowest daily maximum 361, Highest daily minimum 91, Lowest daily minimum 248, Heaviest daily rainfall 539, Heaviest daily snowfall 3, Deepest snow cover 3.

Records on 17 September 1986 by type
Record type	Records
Highest daily maximum	69
Lowest daily maximum	361
Highest daily minimum	91
Lowest daily minimum	248
Heaviest daily rainfall	539
Heaviest daily snowfall	3
Deepest snow cover	3

Records on 17 September 1986 by timescale: all-time 4, monthly 37, daily 1,273.

How Much Records Were Beaten By

1,124 broken records

Margins by which the 1,124 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.0. Ties are not counted.

Top 20 by Significance

17 September 1986

Top 20 records on 17 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1986	Brookings 2 NE, US	monthly rain	104.4 mm (4.1 in)	39.9 mm (1.6 in)	86 years	84 of 100 (Exceptional)
17 September 1986	Sonnblick, AT	all-time rain	156.1 mm (6.1 in)	47.7 mm (1.9 in)	51 years	83 of 100 (Exceptional)
17 September 1986	Mingachevir, AZ	all-time rain	95.1 mm (3.7 in)	29.8 mm (1.2 in)	28 years	70 of 100 (Major)
17 September 1986	Wingaroo, AU	daily rain	39.4 mm (1.6 in)	22.6 mm (0.9 in)	68 years	66 of 100 (Major)
17 September 1986	Napoleon, US	daily rain	39.4 mm (1.6 in)	25.2 mm (1.0 in)	86 years	66 of 100 (Major)
17 September 1986	Canby, US	daily rain	85.1 mm (3.4 in)	64.3 mm (2.5 in)	63 years	65 of 100 (Major)
17 September 1986	Arlington 1 W, US	monthly rain	107.2 mm (4.2 in)	45.7 mm (1.8 in)	32 years	64 of 100 (Major)
17 September 1986	Luverne, US	daily rain	71.6 mm (2.8 in)	36.3 mm (1.4 in)	79 years	62 of 100 (Major)
17 September 1986	Bendigo Prison, AU	daily rain	41.5 mm (1.6 in)	16.4 mm (0.6 in)	89 years	59 of 100 (Notable)
17 September 1986	Nowata, US	daily rain	129.5 mm (5.1 in)	112.7 mm (4.4 in)	49 years	59 of 100 (Notable)
17 September 1986	Vinita 2 N, US	daily rain	100.6 mm (4.0 in)	58.9 mm (2.3 in)	73 years	59 of 100 (Notable)
17 September 1986	Bartlesville Muni AP, US	daily rain	107.4 mm (4.2 in)	76.9 mm (3.0 in)	63 years	59 of 100 (Notable)
17 September 1986	Caniambo, AU	daily rain	41.0 mm (1.6 in)	15.9 mm (0.6 in)	83 years	55 of 100 (Notable)
17 September 1986	Pipestone, US	daily rain	73.4 mm (2.9 in)	27.7 mm (1.1 in)	79 years	54 of 100 (Notable)
17 September 1986	Chambers, US	daily rain	62.2 mm (2.4 in)	31.7 mm (1.2 in)	63 years	54 of 100 (Notable)
17 September 1986	Jixi, CN	daily rain	48.8 mm (1.9 in)	39.9 mm (1.6 in)	31 years	52 of 100 (Notable)
17 September 1986	Sedan, US	daily rain	70.9 mm (2.8 in)	32.0 mm (1.3 in)	91 years	52 of 100 (Notable)
17 September 1986	Lockwood, US	daily rain	93.2 mm (3.7 in)	42.9 mm (1.7 in)	80 years	52 of 100 (Notable)
17 September 1986	Lexton, AU	daily rain	31.0 mm (1.2 in)	12.7 mm (0.5 in)	76 years	51 of 100 (Notable)
17 September 1986	Cherdyn', RU	daily rain	28.1 mm (1.1 in)	10.7 mm (0.4 in)	64 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

1796 to 1986

Records set or tied on this calendar date in each year from 1796 to 1986. 1986 had 1,314 records.

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

Records on 09-17 in each year
Year	Records
1796	1
1797	1
1805	1
1833	1
1834	1
1837	2
1845	1
1847	3
1848	1
1850	1
1851	2
1853	2
1854	2
1859	1
1862	1
1867	1
1870	1
1871	1
1872	1
1873	1
1874	1
1875	1
1877	1
1881	1
1882	2
1884	3
1885	3
1886	6
1888	2
1889	8
1891	1
1893	3
1894	1
1895	4
1896	9
1897	4
1898	7
1899	1
1900	4
1901	5
1902	5
1903	28
1904	2
1905	17
1906	10
1907	15
1908	13
1909	7
1910	38
1911	15
1912	17
1913	28
1914	38
1915	48
1916	40
1917	255
1918	41
1919	21
1920	40
1921	66
1922	47
1923	159
1924	80
1925	338
1926	154
1927	420
1928	78
1929	168
1930	147
1931	564
1932	425
1933	415
1934	246
1935	321
1936	219
1937	463
1938	363
1939	294
1940	326
1941	328
1942	581
1943	513
1944	403
1945	614
1946	620
1947	680
1948	630
1949	292
1950	412
1951	359
1952	263
1953	344
1954	449
1955	649
1956	437
1957	405
1958	806
1959	1,210
1960	385
1961	657
1962	432
1963	297
1964	559
1965	1,394
1966	523
1967	331
1968	691
1969	352
1970	412
1971	898
1972	556
1973	638
1974	491
1975	478
1976	636
1977	641
1978	764
1979	804
1980	794
1981	1,155
1982	606
1983	862
1984	1,006
1985	448
1986	1,314
1987	926
1988	982
1989	863
1990	650
1991	1,407
1992	686
1993	950
1994	986
1995	1,145
1996	1,342
1997	1,057
1998	1,137
1999	1,102
2000	1,318
2001	895
2002	1,025
2003	586
2004	872
2005	1,042
2006	1,344
2007	752
2008	886
2009	871
2010	907
2011	1,116
2012	597
2013	1,253
2014	571
2015	953
2016	707
2017	455
2018	899
2019	774
2020	651
2021	345
2022	313
2023	646
2024	954
2025	634
2026	968

Download the Data

Data for records on 1986-09-17: 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	1,070
20 to 40	40
40 to 60	7
60 to 80	4
80 to 100	0
100 to 120	2
120 to 140	1