Weather Records on 16 September 1986

862 weather records were set or tied worldwide on 16 September 1986. Highest significance: O'Neill, US.

Key Facts for 16 September 1986

On 16 September 1986, 862 weather records were set or tied at long-record stations worldwide.
190 were record highs and 347 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 34 monthly and 827 daily.
O'Neill set an all-time record daily precipitation of 148.3 mm (5.8 in) on 16 September 1986.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 411 records.

Record Map

862 stations

862 station records on 16 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 16 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
O'Neill	United States	Record daily precipitation	148.3 mm (5.8 in)	65 of 100 (Major)
Sunnyside	United States	Record daily precipitation	36.1 mm (1.4 in)	62 of 100 (Major)
Mt Washington	United States	Record daily snowfall	19.6 cm (7.7 in)	61 of 100 (Major)
Minneota	United States	Record daily precipitation	108.5 mm (4.3 in)	59 of 100 (Notable)
Belle Ile - le Talut	France	Record daily precipitation	39.2 mm (1.5 in)	55 of 100 (Notable)
Tyndall	United States	Record daily precipitation	59.4 mm (2.3 in)	53 of 100 (Notable)
Palencia (Observatorio)	Spain	Record daily precipitation	36.7 mm (1.4 in)	51 of 100 (Notable)
Mainz-Lerchenberg (Zdf)	Germany	Record daily precipitation	28.7 mm (1.1 in)	50 of 100 (Notable)
Wolfstein/Pfalz	Germany	Record daily precipitation	40.1 mm (1.6 in)	50 of 100 (Notable)
Neosho	United States	Record daily precipitation	71.1 mm (2.8 in)	50 of 100 (Notable)
Strasbourg-Entzheim	France	Record daily precipitation	31.6 mm (1.2 in)	49 of 100 (Notable)
Ermsdorf	Luxembourg	Record daily precipitation	30.7 mm (1.2 in)	49 of 100 (Notable)
Montevideo 1SW	United States	Record daily precipitation	62.7 mm (2.5 in)	49 of 100 (Notable)
Mora	United States	Record daily precipitation	57.2 mm (2.3 in)	48 of 100 (Notable)
Belvaux	Luxembourg	Record daily precipitation	38.9 mm (1.5 in)	47 of 100 (Notable)
Bentonville 4 S	United States	Record daily precipitation	88.9 mm (3.5 in)	47 of 100 (Notable)
Wichita Mtn Wr	United States	Record daily precipitation	106.7 mm (4.2 in)	47 of 100 (Notable)
Pollock	United States	Record daily precipitation	46.5 mm (1.8 in)	47 of 100 (Notable)
Altrier	Luxembourg	Record daily precipitation	29.2 mm (1.1 in)	46 of 100 (Notable)
Shu'j	Russia	Record daily precipitation	25.5 mm (1.0 in)	46 of 100 (Notable)
Newport	United States	Record daily precipitation	73.9 mm (2.9 in)	46 of 100 (Notable)
Mobridge 2NNW	United States	Record daily precipitation	30.0 mm (1.2 in)	46 of 100 (Notable)
Lorentzweiler	Luxembourg	Record daily precipitation	28.0 mm (1.1 in)	45 of 100 (Notable)
Vanersborg	Sweden	Record low minimum temperature	-1.0 C (30.2 F)	45 of 100 (Notable)
Berryville 6 NW	United States	Record daily precipitation	70.1 mm (2.8 in)	45 of 100 (Notable)
Atkinson 3SW	United States	Record daily precipitation	44.7 mm (1.8 in)	45 of 100 (Notable)
Kostroma	Russia	Record daily precipitation	35.0 mm (1.4 in)	44 of 100 (Notable)
Jamestown State Hosp	United States	Record daily precipitation	33.5 mm (1.3 in)	44 of 100 (Notable)
Redwood Falls Muni AP	United States	Record daily precipitation	57.9 mm (2.3 in)	44 of 100 (Notable)
Kahl/Main	Germany	Record daily precipitation	28.1 mm (1.1 in)	43 of 100 (Notable)
Ruppertsecken	Germany	Record daily precipitation	37.1 mm (1.5 in)	43 of 100 (Notable)
Santa Rosa	United States	Record daily precipitation	39.1 mm (1.5 in)	43 of 100 (Notable)
Magdeburg	Germany	Record low maximum temperature	11.1 C (52.0 F)	42 of 100 (Notable)
Bettborn-Pratz	Luxembourg	Record daily precipitation	29.6 mm (1.2 in)	42 of 100 (Notable)
Menno	United States	Record daily precipitation	36.8 mm (1.4 in)	42 of 100 (Notable)
Wrixum/Fohr	Germany	Record low minimum temperature	4.0 C (39.2 F)	41 of 100 (Notable)
Stornoway Airport	United Kingdom	Record low minimum temperature	3.0 C (37.4 F)	41 of 100 (Notable)
Siloam Springs	United States	Record daily precipitation	121.4 mm (4.8 in)	41 of 100 (Notable)
Mecca Fire STN	United States	Record low minimum temperature	8.9 C (48.0 F)	41 of 100 (Notable)
Hague	United States	Record daily precipitation	38.1 mm (1.5 in)	40 of 100 (Notable)
Mahackala	Russia	Record high minimum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Bridgeville 4 NNW	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Sioux Falls	United States	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Lamesa 1 SSE	United States	Record daily precipitation	74.9 mm (2.9 in)	37 of 100 (Notable)
Olsdorf	Germany	Record daily precipitation	28.9 mm (1.1 in)	36 of 100 (Notable)
Worms	Germany	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Patna	India	Record daily precipitation	93.0 mm (3.7 in)	36 of 100 (Notable)
Calmus	Luxembourg	Record daily precipitation	29.8 mm (1.2 in)	36 of 100 (Notable)
Koerich	Luxembourg	Record daily precipitation	29.8 mm (1.2 in)	36 of 100 (Notable)
Buzau	Romania	Record high maximum temperature	34.6 C (94.3 F)	36 of 100 (Notable)
Scotia	United States	Record daily precipitation	26.4 mm (1.0 in)	36 of 100 (Notable)
Aachen	Germany	Record low maximum temperature	10.2 C (50.4 F)	35 of 100 (Notable)
Nurburg	Germany	Record daily precipitation	26.3 mm (1.0 in)	35 of 100 (Notable)
Jerez de la Frontera	Spain	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Yreka	United States	Record low maximum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Purdum	United States	Record daily precipitation	39.1 mm (1.5 in)	35 of 100 (Notable)
Gatum	Australia	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
Drobeta Turnu Severin	Romania	Record high maximum temperature	33.6 C (92.5 F)	34 of 100 (Routine)
Creighton	United States	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Aschaffenburg	Germany	Record daily precipitation	28.4 mm (1.1 in)	33 of 100 (Routine)

Counts by Type and Timescale

862 records

Records set or tied on 16 September 1986 by type: Highest daily maximum 80, Lowest daily maximum 219, Highest daily minimum 110, Lowest daily minimum 128, Heaviest daily rainfall 321, Heaviest daily snowfall 3, Deepest snow cover 1.

Records on 16 September 1986 by type
Record type	Records
Highest daily maximum	80
Lowest daily maximum	219
Highest daily minimum	110
Lowest daily minimum	128
Heaviest daily rainfall	321
Heaviest daily snowfall	3
Deepest snow cover	1

Records on 16 September 1986 by timescale: all-time 1, monthly 34, daily 827.

How Much Records Were Beaten By

711 broken records

Margins by which the 711 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 94.0. Ties are not counted.

Top 20 by Significance

16 September 1986

Top 20 records on 16 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 September 1986	O'Neill, US	all-time rain	148.3 mm (5.8 in)	25.4 mm (1.0 in)	49 years	65 of 100 (Major)
16 September 1986	Sunnyside, US	monthly rain	36.1 mm (1.4 in)	15.8 mm (0.6 in)	15 years	62 of 100 (Major)
16 September 1986	Mt Washington, US	monthly snowfall	19.6 cm (7.7 in)	9.4 cm (3.7 in)	27 years	61 of 100 (Major)
16 September 1986	Minneota, US	monthly rain	108.5 mm (4.3 in)	55.9 mm (2.2 in)	20 years	59 of 100 (Notable)
16 September 1986	Belle Ile - le Talut, FR	daily rain	39.2 mm (1.5 in)	23.2 mm (0.9 in)	51 years	55 of 100 (Notable)
16 September 1986	Tyndall, US	daily rain	59.4 mm (2.3 in)	23.1 mm (0.9 in)	80 years	53 of 100 (Notable)
16 September 1986	Palencia (Observatorio), ES	daily rain	36.7 mm (1.4 in)	33.1 mm (1.3 in)	27 years	51 of 100 (Notable)
16 September 1986	Mainz-Lerchenberg (Zdf), DE	daily rain	28.7 mm (1.1 in)	16.6 mm (0.7 in)	21 years	50 of 100 (Notable)
16 September 1986	Wolfstein/Pfalz, DE	daily rain	40.1 mm (1.6 in)	21.4 mm (0.8 in)	27 years	50 of 100 (Notable)
16 September 1986	Neosho, US	daily rain	71.1 mm (2.8 in)	42.7 mm (1.7 in)	67 years	50 of 100 (Notable)
16 September 1986	Strasbourg-Entzheim, FR	daily rain	31.6 mm (1.2 in)	20.0 mm (0.8 in)	27 years	49 of 100 (Notable)
16 September 1986	Ermsdorf, LU	daily rain	30.7 mm (1.2 in)	21.2 mm (0.8 in)	32 years	49 of 100 (Notable)
16 September 1986	Montevideo 1SW, US	daily rain	62.7 mm (2.5 in)	27.1 mm (1.1 in)	63 years	49 of 100 (Notable)
16 September 1986	Mora, US	daily rain	57.2 mm (2.3 in)	18.8 mm (0.7 in)	79 years	48 of 100 (Notable)
16 September 1986	Belvaux, LU	daily rain	38.9 mm (1.5 in)	24.2 mm (1.0 in)	25 years	47 of 100 (Notable)
16 September 1986	Bentonville 4 S, US	daily rain	88.9 mm (3.5 in)	71.1 mm (2.8 in)	11 years	47 of 100 (Notable)
16 September 1986	Wichita Mtn Wr, US	daily rain	106.7 mm (4.2 in)	61.0 mm (2.4 in)	23 years	47 of 100 (Notable)
16 September 1986	Pollock, US	daily rain	46.5 mm (1.8 in)	32.0 mm (1.3 in)	20 years	47 of 100 (Notable)
16 September 1986	Altrier, LU	daily rain	29.2 mm (1.1 in)	21.2 mm (0.8 in)	32 years	46 of 100 (Notable)
16 September 1986	Shu'j, RU	daily rain	25.5 mm (1.0 in)	15.5 mm (0.6 in)	33 years	46 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 862 records.

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

Records on 09-16 in each year
Year	Records
1793	1
1796	1
1807	1
1809	1
1823	2
1828	1
1829	1
1833	1
1837	1
1845	1
1847	1
1848	2
1850	1
1852	1
1854	2
1857	1
1861	1
1865	1
1866	1
1867	1
1869	1
1873	1
1874	3
1875	2
1877	4
1879	1
1882	1
1884	2
1885	5
1886	1
1887	2
1888	1
1889	9
1890	1
1892	2
1893	2
1894	1
1895	2
1896	3
1897	2
1898	6
1899	4
1900	5
1901	7
1902	3
1903	18
1904	5
1905	9
1906	12
1907	14
1908	15
1909	18
1910	26
1911	18
1912	58
1913	43
1914	35
1915	50
1916	60
1917	180
1918	125
1919	26
1920	164
1921	62
1922	147
1923	151
1924	77
1925	212
1926	116
1927	382
1928	62
1929	121
1930	235
1931	568
1932	533
1933	321
1934	519
1935	303
1936	442
1937	536
1938	296
1939	666
1940	188
1941	319
1942	504
1943	270
1944	284
1945	390
1946	610
1947	763
1948	541
1949	486
1950	506
1951	290
1952	378
1953	317
1954	554
1955	490
1956	605
1957	500
1958	538
1959	983
1960	235
1961	833
1962	479
1963	491
1964	859
1965	1,159
1966	838
1967	427
1968	496
1969	360
1970	627
1971	617
1972	451
1973	608
1974	385
1975	836
1976	878
1977	577
1978	421
1979	1,025
1980	568
1981	765
1982	863
1983	814
1984	898
1985	539
1986	862
1987	783
1988	786
1989	854
1990	593
1991	1,367
1992	1,073
1993	1,542
1994	1,008
1995	976
1996	1,403
1997	1,028
1998	1,466
1999	879
2000	1,315
2001	819
2002	1,117
2003	627
2004	746
2005	1,112
2006	1,274
2007	895
2008	1,000
2009	754
2010	880
2011	1,265
2012	572
2013	673
2014	490
2015	926
2016	767
2017	583
2018	921
2019	742
2020	674
2021	454
2022	521
2023	568
2024	885
2025	578
2026	920

Download the Data

Data for records on 1986-09-16: 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	664
20 to 40	34
40 to 60	6
60 to 80	6
80 to 100	1