Weather Records on 9 December 1986

658 weather records were set or tied worldwide on 9 December 1986. Highest significance: Gunnison 3SW, US.

Key Facts for 9 December 1986

On 9 December 1986, 658 weather records were set or tied at long-record stations worldwide.
258 were record highs and 52 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 11 monthly and 646 daily.
Gunnison 3SW set a monthly record daily precipitation of 38.1 mm (1.5 in) on 9 December 1986.
Across 157 earlier years (1796 to 2025) the same calendar date averaged 474 records.

Record Map

658 stations

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

Weather records on 9 December 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gunnison 3SW	United States	Record daily precipitation	38.1 mm (1.5 in)	82 of 100 (Exceptional)
Randfontein (Gm)	South Africa	Record daily precipitation	96.5 mm (3.8 in)	66 of 100 (Major)
Fredrikstad (Sar)	South Africa	Record daily precipitation	60.5 mm (2.4 in)	62 of 100 (Major)
Collbran	United States	Record daily snowfall	22.9 cm (9.0 in)	58 of 100 (Notable)
Kinsley 2E	United States	Record daily precipitation	51.6 mm (2.0 in)	56 of 100 (Notable)
Gloversville	United States	Record daily precipitation	33.0 mm (1.3 in)	51 of 100 (Notable)
Chiang Mai	Thailand	Record daily precipitation	56.9 mm (2.2 in)	50 of 100 (Notable)
Turffontein	South Africa	Record daily precipitation	80.0 mm (3.1 in)	45 of 100 (Notable)
Pointe Noire	Congo (Brazzaville)	Record daily precipitation	114.0 mm (4.5 in)	44 of 100 (Notable)
Loskop	South Africa	Record daily precipitation	59.0 mm (2.3 in)	44 of 100 (Notable)
Skwentna	United States	Record daily precipitation	45.5 mm (1.8 in)	44 of 100 (Notable)
Musoma	Tanzania	Record daily precipitation	65.0 mm (2.6 in)	43 of 100 (Notable)
Ft Yukon	United States	Record daily snowfall	8.4 cm (3.3 in)	42 of 100 (Notable)
Mt Hope	United States	Record daily precipitation	29.5 mm (1.2 in)	41 of 100 (Notable)
Atlantic City Marina	United States	Record daily precipitation	33.8 mm (1.3 in)	41 of 100 (Notable)
Ibirarema	Brazil	Record daily precipitation	98.2 mm (3.9 in)	39 of 100 (Notable)
Jefferson	United States	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Analandia	Brazil	Record daily precipitation	86.1 mm (3.4 in)	38 of 100 (Notable)
Visconde de Rio Claro	Brazil	Record daily precipitation	83.0 mm (3.3 in)	38 of 100 (Notable)
Grootpoort	South Africa	Record daily precipitation	55.0 mm (2.2 in)	38 of 100 (Notable)
Bananal (Pcd)	Brazil	Record daily precipitation	72.8 mm (2.9 in)	37 of 100 (Notable)
Sao Jose Do Barreiro	Brazil	Record daily precipitation	77.5 mm (3.1 in)	37 of 100 (Notable)
Fartura	Brazil	Record daily precipitation	67.5 mm (2.7 in)	37 of 100 (Notable)
Salida	United States	Record low maximum temperature	-7.8 C (18.0 F)	37 of 100 (Notable)
Dalby Post Office	Australia	Record low minimum temperature	8.6 C (47.5 F)	36 of 100 (Notable)
Booneville	United States	Record daily precipitation	91.9 mm (3.6 in)	36 of 100 (Notable)
Faywood	United States	Record daily snowfall	10.2 cm (4.0 in)	36 of 100 (Notable)
Gayndah Post Office	Australia	Record low minimum temperature	12.6 C (54.7 F)	34 of 100 (Routine)
Memphis	United States	Record daily precipitation	25.4 mm (1.0 in)	34 of 100 (Routine)
Aguas de Santa Barbara	Brazil	Record daily precipitation	51.3 mm (2.0 in)	33 of 100 (Routine)
Mbabane	Swaziland	Record daily precipitation	44.4 mm (1.7 in)	33 of 100 (Routine)
Astara	Azerbaijan	Record daily precipitation	75.8 mm (3.0 in)	32 of 100 (Routine)
Guaianas	Brazil	Record daily precipitation	46.1 mm (1.8 in)	32 of 100 (Routine)
Sao Manuel	Brazil	Record daily precipitation	70.7 mm (2.8 in)	32 of 100 (Routine)
Bauru (Pdv)	Brazil	Record daily precipitation	54.9 mm (2.2 in)	32 of 100 (Routine)
Samburg Wr	United States	Record daily precipitation	89.4 mm (3.5 in)	31 of 100 (Routine)
Cordova AP	United States	Record daily precipitation	76.5 mm (3.0 in)	31 of 100 (Routine)
Utsira Fyr	Norway	Record high minimum temperature	8.3 C (46.9 F)	30 of 100 (Routine)
Tallahassee	United States	Record daily precipitation	41.4 mm (1.6 in)	30 of 100 (Routine)
Butchers Ridge	Australia	Record daily precipitation	25.2 mm (1.0 in)	29 of 100 (Routine)
Pindamonhangaba (Pcd)	Brazil	Record daily precipitation	56.2 mm (2.2 in)	29 of 100 (Routine)
Lencois Paulista	Brazil	Record daily precipitation	59.9 mm (2.4 in)	29 of 100 (Routine)
Barao de Antonina	Brazil	Record daily precipitation	42.6 mm (1.7 in)	29 of 100 (Routine)
Buena Vista 2S	United States	Record low minimum temperature	-26.1 C (-15.0 F)	29 of 100 (Routine)
Pueblo Mem AP	United States	Record daily snowfall	11.9 cm (4.7 in)	29 of 100 (Routine)
Corinda	Australia	Record daily precipitation	55.0 mm (2.2 in)	28 of 100 (Routine)
Meander	Australia	Record daily precipitation	41.0 mm (1.6 in)	28 of 100 (Routine)
Richmond (Brookbank)	Australia	Record daily precipitation	31.4 mm (1.2 in)	28 of 100 (Routine)
Natitingou	Benin	Record low minimum temperature	13.0 C (55.4 F)	28 of 100 (Routine)
Evart	United States	Record snow depth	20.3 cm (8.0 in)	28 of 100 (Routine)
Black Lake	United States	Record daily snowfall	17.8 cm (7.0 in)	28 of 100 (Routine)
Cabbage Tree Creek	Australia	Record daily precipitation	44.2 mm (1.7 in)	27 of 100 (Routine)
Porto Santa Terezinha An/Cesp	Brazil	Record daily precipitation	51.0 mm (2.0 in)	27 of 100 (Routine)
Squa Pan Dam	United States	Record low maximum temperature	-18.9 C (-2.0 F)	27 of 100 (Routine)
Sledge	United States	Record daily precipitation	90.2 mm (3.6 in)	27 of 100 (Routine)
Maxwell 3 NW	United States	Record snow depth	10.2 cm (4.0 in)	27 of 100 (Routine)
Alger-Dar El Beida	Algeria	Record daily precipitation	34.5 mm (1.4 in)	26 of 100 (Routine)
Pormpuraaw Township	Australia	Record daily precipitation	76.0 mm (3.0 in)	26 of 100 (Routine)
Santa Rita Do Massaim	Brazil	Record daily precipitation	75.6 mm (3.0 in)	26 of 100 (Routine)
Twyfelspoort	South Africa	Record daily precipitation	51.5 mm (2.0 in)	26 of 100 (Routine)

Counts by Type and Timescale

658 records

Records set or tied on 9 December 1986 by type: Highest daily maximum 121, Lowest daily maximum 24, Highest daily minimum 137, Lowest daily minimum 28, Heaviest daily rainfall 282, Heaviest daily snowfall 48, Deepest snow cover 18.

Records on 9 December 1986 by type
Record type	Records
Highest daily maximum	121
Lowest daily maximum	24
Highest daily minimum	137
Lowest daily minimum	28
Heaviest daily rainfall	282
Heaviest daily snowfall	48
Deepest snow cover	18

Records on 9 December 1986 by timescale: all-time 1, monthly 11, daily 646.

How Much Records Were Beaten By

530 broken records

Margins by which the 530 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

9 December 1986

Top 20 records on 9 December 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 December 1986	Gunnison 3SW, US	monthly rain	38.1 mm (1.5 in)	17.8 mm (0.7 in)	76 years	82 of 100 (Exceptional)
9 December 1986	Randfontein (Gm), ZA	daily rain	96.5 mm (3.8 in)	73.9 mm (2.9 in)	61 years	66 of 100 (Major)
9 December 1986	Fredrikstad (Sar), ZA	daily rain	60.5 mm (2.4 in)	40.4 mm (1.6 in)	72 years	62 of 100 (Major)
9 December 1986	Collbran, US	daily snowfall	22.9 cm (9.0 in)	11.5 cm (4.5 in)	88 years	58 of 100 (Notable)
9 December 1986	Kinsley 2E, US	daily rain	51.6 mm (2.0 in)	40.9 mm (1.6 in)	39 years	56 of 100 (Notable)
9 December 1986	Gloversville, US	daily rain	33.0 mm (1.3 in)	13.2 mm (0.5 in)	89 years	51 of 100 (Notable)
9 December 1986	Chiang Mai, TH	daily rain	56.9 mm (2.2 in)	56.4 mm (2.2 in)	41 years	50 of 100 (Notable)
9 December 1986	Turffontein, ZA	daily rain	80.0 mm (3.1 in)	35.0 mm (1.4 in)	32 years	45 of 100 (Notable)
9 December 1986	Pointe Noire, CG	daily rain	114.0 mm (4.5 in)	73.4 mm (2.9 in)	9 years	44 of 100 (Notable)
9 December 1986	Loskop, ZA	daily rain	59.0 mm (2.3 in)	30.8 mm (1.2 in)	45 years	44 of 100 (Notable)
9 December 1986	Skwentna, US	daily rain	45.5 mm (1.8 in)	31.3 mm (1.2 in)	0 years	44 of 100 (Notable)
9 December 1986	Musoma, TZ	daily rain	65.0 mm (2.6 in)	58.2 mm (2.3 in)	1 year	43 of 100 (Notable)
9 December 1986	Ft Yukon, US	daily snowfall	8.4 cm (3.3 in)	3.3 cm (1.3 in)	84 years	42 of 100 (Notable)
9 December 1986	Mt Hope, US	daily rain	29.5 mm (1.2 in)	9.2 mm (0.36 in)	75 years	41 of 100 (Notable)
9 December 1986	Atlantic City Marina, US	daily rain	33.8 mm (1.3 in)	1.8 mm (0.07 in)	100 years	41 of 100 (Notable)
9 December 1986	Ibirarema, BR	daily rain	98.2 mm (3.9 in)	59.2 mm (2.3 in)	8 years	39 of 100 (Notable)
9 December 1986	Jefferson, US	daily rain	61.0 mm (2.4 in)	27.5 mm (1.1 in)	60 years	39 of 100 (Notable)
9 December 1986	Analandia, BR	daily rain	86.1 mm (3.4 in)	50.4 mm (2.0 in)	4 years	38 of 100 (Notable)
9 December 1986	Visconde de Rio Claro, BR	daily rain	83.0 mm (3.3 in)	50.9 mm (2.0 in)	8 years	38 of 100 (Notable)
9 December 1986	Grootpoort, ZA	daily rain	55.0 mm (2.2 in)	24.5 mm (1.0 in)	52 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

1796 to 1986

Records set or tied on this calendar date in each year from 1796 to 1986. 1986 had 658 records.

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

Records on 12-09 in each year
Year	Records
1796	1
1820	1
1825	3
1831	1
1844	1
1856	1
1860	1
1862	1
1867	2
1868	1
1869	1
1871	3
1872	1
1873	2
1876	2
1878	4
1879	9
1880	1
1882	3
1883	1
1885	2
1886	2
1887	1
1889	1
1891	3
1893	1
1894	1
1895	3
1896	1
1897	4
1898	3
1899	5
1900	1
1901	4
1902	18
1903	7
1904	2
1905	9
1906	15
1907	28
1908	5
1909	18
1910	36
1911	31
1912	18
1913	37
1914	57
1915	139
1916	366
1917	106
1918	40
1919	58
1920	221
1921	58
1922	311
1923	203
1924	164
1925	93
1926	113
1927	356
1928	110
1929	192
1930	211
1931	434
1932	339
1933	250
1934	364
1935	263
1936	143
1937	348
1938	329
1939	1,030
1940	251
1941	144
1942	370
1943	496
1944	327
1945	178
1946	1,308
1947	303
1948	278
1949	299
1950	382
1951	849
1952	553
1953	347
1954	226
1955	352
1956	672
1957	565
1958	678
1959	217
1960	426
1961	818
1962	377
1963	642
1964	547
1965	706
1966	968
1967	639
1968	482
1969	347
1970	987
1971	655
1972	1,776
1973	679
1974	629
1975	668
1976	868
1977	1,548
1978	2,060
1979	693
1980	760
1981	748
1982	589
1983	664
1984	588
1985	1,074
1986	658
1987	1,007
1988	939
1989	1,270
1990	844
1991	878
1992	791
1993	912
1994	1,071
1995	1,247
1996	946
1997	1,214
1998	769
1999	774
2000	920
2001	505
2002	1,052
2003	824
2004	1,108
2005	1,714
2006	1,718
2007	1,124
2008	1,052
2009	2,442
2010	1,726
2011	496
2012	753
2013	1,018
2014	510
2015	1,054
2016	679
2017	715
2018	626
2019	614
2020	571
2021	674
2022	666
2023	907
2024	422
2025	1,602

Download the Data

Data for records on 1986-12-09: 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	460
20 to 40	44
40 to 60	17
60 to 80	5
80 to 100	0
100 to 120	3
120 to 140	1