Weather Records on 9 September 1986

1,026 weather records were set or tied worldwide on 9 September 1986. Highest significance: Navojoa, MX.

Key Facts for 9 September 1986

On 9 September 1986, 1,026 weather records were set or tied at long-record stations worldwide.
127 were record highs and 714 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 16 monthly and 1,006 daily.
Navojoa set an all-time record daily precipitation of 210.8 mm (8.3 in) on 9 September 1986.
Across 162 earlier years (1806 to 2026) the same calendar date averaged 458 records.

Record Map

1,026 stations

1,026 station records on 9 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Navojoa	Mexico	Record daily precipitation	210.8 mm (8.3 in)	79 of 100 (Major)
Tesia	Mexico	Record daily precipitation	254.8 mm (10.0 in)	72 of 100 (Major)
Deer Flat Dam	United States	Record daily precipitation	25.9 mm (1.0 in)	57 of 100 (Notable)
Bigfork 13 S	United States	Record daily precipitation	39.6 mm (1.6 in)	50 of 100 (Notable)
Three Lynx	United States	Record daily precipitation	35.1 mm (1.4 in)	50 of 100 (Notable)
Swan Falls Ph	United States	Record daily precipitation	37.8 mm (1.5 in)	49 of 100 (Notable)
Creston	United States	Record daily precipitation	29.0 mm (1.1 in)	47 of 100 (Notable)
Koolau Dam 833	United States	Record daily precipitation	126.5 mm (5.0 in)	47 of 100 (Notable)
Valier	United States	Record daily precipitation	29.0 mm (1.1 in)	45 of 100 (Notable)
Bremen-Seefahrtschule	Germany	Record low minimum temperature	1.4 C (34.5 F)	42 of 100 (Notable)
Arcadia	United States	Record daily precipitation	73.7 mm (2.9 in)	42 of 100 (Notable)
W Glacier	United States	Record daily precipitation	35.3 mm (1.4 in)	42 of 100 (Notable)
Putbus	Germany	Record low minimum temperature	6.1 C (43.0 F)	40 of 100 (Notable)
White Hall 1 E	United States	Record low minimum temperature	2.8 C (37.0 F)	40 of 100 (Notable)
Sedalia Wtp	United States	Record low minimum temperature	3.3 C (37.9 F)	40 of 100 (Notable)
Telluride 4WNW	United States	Record daily precipitation	28.4 mm (1.1 in)	39 of 100 (Notable)
American Falls 6 NE	United States	Record low maximum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Leitchfield 2 N	United States	Record low minimum temperature	6.7 C (44.1 F)	39 of 100 (Notable)
Janesville	United States	Record daily precipitation	35.6 mm (1.4 in)	39 of 100 (Notable)
Etchojoa	Mexico	Record daily precipitation	81.3 mm (3.2 in)	38 of 100 (Notable)
Olney 2S	United States	Record low minimum temperature	5.6 C (42.1 F)	38 of 100 (Notable)
Brunswick	United States	Record low minimum temperature	5.0 C (41.0 F)	38 of 100 (Notable)
Halmstad	Sweden	Record low minimum temperature	0.5 C (32.9 F)	37 of 100 (Notable)
Buxton	United Kingdom	Record low minimum temperature	0.6 C (33.1 F)	37 of 100 (Notable)
Melbourne WFO	United States	Record daily precipitation	81.3 mm (3.2 in)	37 of 100 (Notable)
Lexington	United States	Record low maximum temperature	19.4 C (66.9 F)	37 of 100 (Notable)
Lysebotn	Norway	Record daily precipitation	35.1 mm (1.4 in)	36 of 100 (Notable)
Cet Central England	United Kingdom	Record low minimum temperature	3.0 C (37.4 F)	36 of 100 (Notable)
Wickenburg	United States	Record daily precipitation	34.3 mm (1.4 in)	36 of 100 (Notable)
Mattoon	United States	Record low minimum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Watseka Public Works	United States	Record low minimum temperature	2.2 C (36.0 F)	36 of 100 (Notable)
Fall Rvr Lake	United States	Record low maximum temperature	22.2 C (72.0 F)	36 of 100 (Notable)
Manistique Wwtp	United States	Record low minimum temperature	0.0 C (32.0 F)	36 of 100 (Notable)
Hungry Horse Dam	United States	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Statesville 2 NNE	United States	Record low maximum temperature	20.0 C (68.0 F)	36 of 100 (Notable)
Poteet	United States	Record high maximum temperature	44.4 C (111.9 F)	36 of 100 (Notable)
Schwerin	Germany	Record low minimum temperature	4.9 C (40.8 F)	35 of 100 (Notable)
Hagerstown 1E	United States	Record low minimum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Polson	United States	Record daily precipitation	35.1 mm (1.4 in)	35 of 100 (Notable)
Henderson 2 NNW	United States	Record low maximum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
Kurnool	India	Record daily precipitation	72.1 mm (2.8 in)	34 of 100 (Routine)
Oakland 1 SE	United States	Record low minimum temperature	-0.6 C (30.9 F)	34 of 100 (Routine)
Skq Dam	United States	Record daily precipitation	27.7 mm (1.1 in)	34 of 100 (Routine)
Setauket Strong	United States	Record low minimum temperature	8.3 C (46.9 F)	34 of 100 (Routine)
Raleigh State UNIV	United States	Record low maximum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Millport 4 NE	United States	Record low minimum temperature	0.0 C (32.0 F)	34 of 100 (Routine)
Montpelier	United States	Record low minimum temperature	2.8 C (37.0 F)	34 of 100 (Routine)
Santuck	United States	Record low maximum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Winthrop UNIV	United States	Record low maximum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Boxian	China	Record daily precipitation	59.9 mm (2.4 in)	33 of 100 (Routine)
Verona Villafranca	Italy	Record daily precipitation	39.2 mm (1.5 in)	33 of 100 (Routine)
Wisley	United Kingdom	Record low minimum temperature	0.6 C (33.1 F)	33 of 100 (Routine)
Grinnell 3 SW	United States	Record low minimum temperature	0.6 C (33.1 F)	33 of 100 (Routine)
New Castle 1 N	United States	Record low minimum temperature	1.7 C (35.1 F)	33 of 100 (Routine)
Attu	United States	Record low minimum temperature	-0.6 C (30.9 F)	33 of 100 (Routine)
Bradford	United Kingdom	Record low minimum temperature	2.4 C (36.3 F)	32 of 100 (Routine)
Delta	United States	Record low maximum temperature	15.6 C (60.1 F)	32 of 100 (Routine)
Silverton	United States	Record low maximum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Mt Carroll	United States	Record low minimum temperature	0.6 C (33.1 F)	32 of 100 (Routine)
Whitestown	United States	Record low minimum temperature	4.4 C (39.9 F)	32 of 100 (Routine)

Counts by Type and Timescale

1,026 records

Records set or tied on 9 September 1986 by type: Highest daily maximum 57, Lowest daily maximum 221, Highest daily minimum 70, Lowest daily minimum 493, Heaviest daily rainfall 185.

Records on 9 September 1986 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	221
Highest daily minimum	70
Lowest daily minimum	493
Heaviest daily rainfall	185
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 9 September 1986 by timescale: all-time 4, monthly 16, daily 1,006.

How Much Records Were Beaten By

793 broken records

Margins by which the 793 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 96.0. Ties are not counted.

Top 20 by Significance

9 September 1986

Top 20 records on 9 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 September 1986	Navojoa, MX	all-time rain	210.8 mm (8.3 in)	96.0 mm (3.8 in)	44 years	79 of 100 (Major)
9 September 1986	Tesia, MX	all-time rain	254.8 mm (10.0 in)	87.2 mm (3.4 in)	31 years	72 of 100 (Major)
9 September 1986	Deer Flat Dam, US	daily rain	25.9 mm (1.0 in)	21.3 mm (0.8 in)	36 years	57 of 100 (Notable)
9 September 1986	Bigfork 13 S, US	daily rain	39.6 mm (1.6 in)	32.0 mm (1.3 in)	20 years	50 of 100 (Notable)
9 September 1986	Three Lynx, US	daily rain	35.1 mm (1.4 in)	24.9 mm (1.0 in)	55 years	50 of 100 (Notable)
9 September 1986	Swan Falls Ph, US	monthly rain	37.8 mm (1.5 in)	14.4 mm (0.6 in)	5 years	49 of 100 (Notable)
9 September 1986	Creston, US	daily rain	29.0 mm (1.1 in)	20.4 mm (0.8 in)	19 years	47 of 100 (Notable)
9 September 1986	Koolau Dam 833, US	monthly rain	126.5 mm (5.0 in)	15.2 mm (0.6 in)	63 years	47 of 100 (Notable)
9 September 1986	Valier, US	daily rain	29.0 mm (1.1 in)	12.2 mm (0.5 in)	71 years	45 of 100 (Notable)
9 September 1986	Bremen-Seefahrtschule, DE	daily low min	1.4 C (34.5 F)	2.1 C (3.8 F)	91 years	42 of 100 (Notable)
9 September 1986	Arcadia, US	daily rain	73.7 mm (2.9 in)	29.2 mm (1.1 in)	65 years	42 of 100 (Notable)
9 September 1986	W Glacier, US	daily rain	35.3 mm (1.4 in)	23.4 mm (0.9 in)	1 year	42 of 100 (Notable)
9 September 1986	Putbus, DE	daily low min	6.1 C (43.0 F)	0.2 C (0.4 F)	108 years	40 of 100 (Notable)
9 September 1986	White Hall 1 E, US	daily low min	2.8 C (37.0 F)	2.8 C (5.0 F)	87 years	40 of 100 (Notable)
9 September 1986	Sedalia Wtp, US	daily low min	3.3 C (37.9 F)	2.8 C (5.0 F)	87 years	40 of 100 (Notable)
9 September 1986	Telluride 4WNW, US	daily rain	28.4 mm (1.1 in)	9.3 mm (0.37 in)	59 years	39 of 100 (Notable)
9 September 1986	American Falls 6 NE, US	daily low max	13.9 C (57.0 F)	2.2 C (4.0 F)	89 years	39 of 100 (Notable)
9 September 1986	Leitchfield 2 N, US	daily low min	6.7 C (44.1 F)	2.2 C (4.0 F)	87 years	39 of 100 (Notable)
9 September 1986	Janesville, US	daily rain	35.6 mm (1.4 in)	13.5 mm (0.5 in)	71 years	39 of 100 (Notable)
9 September 1986	Etchojoa, MX	daily rain	81.3 mm (3.2 in)	69.9 mm (2.8 in)	4 years	38 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

1806 to 1986

Records set or tied on this calendar date in each year from 1806 to 1986. 1986 had 1,026 records.

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

Records on 09-09 in each year
Year	Records
1806	1
1812	1
1813	1
1814	2
1834	1
1836	1
1845	1
1847	1
1848	1
1849	2
1850	1
1854	1
1864	2
1865	3
1866	3
1867	1
1869	1
1871	1
1873	1
1878	1
1879	1
1880	2
1883	3
1884	4
1886	1
1888	4
1889	1
1890	1
1891	1
1892	4
1893	4
1894	3
1895	7
1897	3
1898	5
1899	6
1900	1
1901	4
1902	5
1903	14
1904	9
1905	8
1906	24
1907	9
1908	5
1909	9
1910	17
1911	27
1912	48
1913	12
1914	69
1915	48
1916	16
1917	44
1918	40
1919	74
1920	145
1921	92
1922	115
1923	58
1924	232
1925	248
1926	168
1927	246
1928	108
1929	362
1930	211
1931	558
1932	302
1933	433
1934	256
1935	461
1936	297
1937	242
1938	416
1939	429
1940	294
1941	763
1942	357
1943	596
1944	719
1945	355
1946	366
1947	465
1948	307
1949	1,407
1950	426
1951	338
1952	511
1953	344
1954	283
1955	608
1956	742
1957	390
1958	419
1959	736
1960	492
1961	383
1962	847
1963	400
1964	488
1965	326
1966	366
1967	367
1968	440
1969	603
1970	584
1971	498
1972	464
1973	517
1974	689
1975	555
1976	773
1977	410
1978	702
1979	878
1980	829
1981	1,011
1982	814
1983	958
1984	1,304
1985	1,269
1986	1,026
1987	676
1988	836
1989	983
1990	762
1991	882
1992	620
1993	886
1994	892
1995	937
1996	809
1997	837
1998	1,667
1999	1,013
2000	811
2001	1,647
2002	1,355
2003	786
2004	1,603
2005	1,068
2006	917
2007	948
2008	1,161
2009	792
2010	1,049
2011	1,328
2012	681
2013	974
2014	590
2015	806
2016	1,210
2017	661
2018	876
2019	953
2020	2,579
2021	1,458
2022	1,094
2023	1,222
2024	1,146
2025	520
2026	815

Download the Data

Data for records on 1986-09-09: 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	774
20 to 40	13
40 to 60	3
60 to 80	1
80 to 100	2