Weather Records on 1 December 1986

803 weather records were set or tied worldwide on 1 December 1986. Highest significance: Mongagua, BR.

Key Facts for 1 December 1986

On 1 December 1986, 803 weather records were set or tied at long-record stations worldwide.
223 were record highs and 92 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 786 daily.
Mongagua set a daily record precipitation of 193.2 mm (7.6 in) on 1 December 1986.
Across 162 earlier years (1797 to 2025) the same calendar date averaged 481 records.

Record Map

803 stations

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

Weather records on 1 December 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mongagua	Brazil	Record daily precipitation	193.2 mm (7.6 in)	57 of 100 (Notable)
Bundaberg Post Office	Australia	Record daily precipitation	82.2 mm (3.2 in)	54 of 100 (Notable)
Biggenden Post Office	Australia	Record daily precipitation	77.8 mm (3.1 in)	52 of 100 (Notable)
Geneva	United States	Record daily snowfall	12.7 cm (5.0 in)	51 of 100 (Notable)
Queiroz	Brazil	Record daily precipitation	95.3 mm (3.8 in)	50 of 100 (Notable)
Hambantota	Sri Lanka	Record low maximum temperature	24.8 C (76.6 F)	49 of 100 (Notable)
Wolcott 3 NW	United States	Record daily precipitation	36.1 mm (1.4 in)	48 of 100 (Notable)
Lurnea	Australia	Record daily precipitation	70.2 mm (2.8 in)	47 of 100 (Notable)
Vitoria de Santo Antao	Brazil	Record daily precipitation	34.2 mm (1.3 in)	46 of 100 (Notable)
Parnu	Estonia	Record high minimum temperature	5.5 C (41.9 F)	46 of 100 (Notable)
Trinidad	United States	Record snow depth	22.9 cm (9.0 in)	46 of 100 (Notable)
Wallangarra Post Office	Australia	Record daily precipitation	52.0 mm (2.0 in)	45 of 100 (Notable)
Sao Miguel Arcanjo	Brazil	Record daily precipitation	80.4 mm (3.2 in)	45 of 100 (Notable)
Coloso	Puerto Rico [United States]	Record daily precipitation	73.7 mm (2.9 in)	45 of 100 (Notable)
Dodge City	United States	Record daily snowfall	8.9 cm (3.5 in)	45 of 100 (Notable)
Rosedale Post Office	Australia	Record daily precipitation	106.0 mm (4.2 in)	43 of 100 (Notable)
Elkader	United States	Record daily snowfall	12.7 cm (5.0 in)	43 of 100 (Notable)
Scott City	United States	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Mungar Junction	Australia	Record daily precipitation	83.8 mm (3.3 in)	42 of 100 (Notable)
Scott City	United States	Record snow depth	33.0 cm (13.0 in)	42 of 100 (Notable)
Warrensburg 4NW	United States	Record daily precipitation	31.8 mm (1.3 in)	42 of 100 (Notable)
Delmiro Gouveia (Pedra)	Brazil	Record daily precipitation	51.2 mm (2.0 in)	41 of 100 (Notable)
Sao Jose Dos Campos	Brazil	Record daily precipitation	70.8 mm (2.8 in)	40 of 100 (Notable)
Fulton	United States	Record daily precipitation	27.7 mm (1.1 in)	40 of 100 (Notable)
Auburn 5 ESE	United States	Record daily precipitation	39.1 mm (1.5 in)	40 of 100 (Notable)
Euleilah Creek	Australia	Record daily precipitation	81.4 mm (3.2 in)	39 of 100 (Notable)
Musoma	Tanzania	Record daily precipitation	61.6 mm (2.4 in)	39 of 100 (Notable)
Blockton 1W	United States	Record daily precipitation	28.4 mm (1.1 in)	39 of 100 (Notable)
E Lawai 934	United States	Record daily precipitation	48.3 mm (1.9 in)	39 of 100 (Notable)
Caldervale Station	Australia	Record daily precipitation	40.0 mm (1.6 in)	38 of 100 (Notable)
Ingwavuma (Tnk)	South Africa	Record daily precipitation	94.0 mm (3.7 in)	38 of 100 (Notable)
Sedalia 4 SSE	United States	Record daily precipitation	29.0 mm (1.1 in)	38 of 100 (Notable)
Harrisburg	United States	Record daily precipitation	34.0 mm (1.3 in)	38 of 100 (Notable)
Goondiwindi Post Office	Australia	Record low maximum temperature	21.5 C (70.7 F)	37 of 100 (Notable)
Kern River Ph 1	United States	Record high maximum temperature	27.2 C (81.0 F)	37 of 100 (Notable)
Sparta 1 W	United States	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Coraopolis Neville Is	United States	Record daily precipitation	25.9 mm (1.0 in)	37 of 100 (Notable)
Mc Laughlin 2SW	United States	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)
Theodore Dpi	Australia	Record daily precipitation	68.0 mm (2.7 in)	36 of 100 (Notable)
Waterloo	Australia	Record daily precipitation	90.0 mm (3.5 in)	36 of 100 (Notable)
Ana Dias	Brazil	Record daily precipitation	81.0 mm (3.2 in)	36 of 100 (Notable)
Sidney 1SSE	United States	Record daily precipitation	35.6 mm (1.4 in)	36 of 100 (Notable)
Jewell	United States	Record daily snowfall	15.2 cm (6.0 in)	36 of 100 (Notable)
Koloa 936	United States	Record daily precipitation	47.0 mm (1.9 in)	36 of 100 (Notable)
Gympie	Australia	Record daily precipitation	54.4 mm (2.1 in)	35 of 100 (Notable)
Howard Post Office	Australia	Record daily precipitation	48.4 mm (1.9 in)	35 of 100 (Notable)
Dynevor Downs	Australia	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Drake (Village Resource Centre	Australia	Record daily precipitation	37.6 mm (1.5 in)	35 of 100 (Notable)
Sterling	United States	Record daily snowfall	11.4 cm (4.5 in)	35 of 100 (Notable)
Deland 1 SSE	United States	Record high minimum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Paris Stp	United States	Record daily precipitation	25.7 mm (1.0 in)	35 of 100 (Notable)
Lexington 3E	United States	Record daily precipitation	30.7 mm (1.2 in)	35 of 100 (Notable)
Dalton	United States	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Kilkivan Post Office	Australia	Record daily precipitation	42.0 mm (1.7 in)	34 of 100 (Routine)
Maleny Denning Rd	Australia	Record daily precipitation	81.0 mm (3.2 in)	34 of 100 (Routine)
Itanhaem	Brazil	Record daily precipitation	101.7 mm (4.0 in)	34 of 100 (Routine)
Warrenton 1 N	United States	Record daily precipitation	26.7 mm (1.1 in)	34 of 100 (Routine)
Caloundra Signal Station	Australia	Record daily precipitation	69.0 mm (2.7 in)	33 of 100 (Routine)
Palmwoods	Australia	Record daily precipitation	77.0 mm (3.0 in)	33 of 100 (Routine)
Barrocada	Brazil	Record daily precipitation	65.3 mm (2.6 in)	33 of 100 (Routine)

Counts by Type and Timescale

803 records

Records set or tied on 1 December 1986 by type: Highest daily maximum 88, Lowest daily maximum 43, Highest daily minimum 135, Lowest daily minimum 49, Heaviest daily rainfall 406, Heaviest daily snowfall 64, Deepest snow cover 18.

Records on 1 December 1986 by type
Record type	Records
Highest daily maximum	88
Lowest daily maximum	43
Highest daily minimum	135
Lowest daily minimum	49
Heaviest daily rainfall	406
Heaviest daily snowfall	64
Deepest snow cover	18

Records on 1 December 1986 by timescale: all-time 0, monthly 17, daily 786.

How Much Records Were Beaten By

693 broken records

Margins by which the 693 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

1 December 1986

Top 20 records on 1 December 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 December 1986	Mongagua, BR	daily rain	193.2 mm (7.6 in)	114.8 mm (4.5 in)	43 years	57 of 100 (Notable)
1 December 1986	Bundaberg Post Office, AU	daily rain	82.2 mm (3.2 in)	42.1 mm (1.7 in)	88 years	54 of 100 (Notable)
1 December 1986	Biggenden Post Office, AU	daily rain	77.8 mm (3.1 in)	40.2 mm (1.6 in)	76 years	52 of 100 (Notable)
1 December 1986	Geneva, US	daily snowfall	12.7 cm (5.0 in)	10.2 cm (4.0 in)	83 years	51 of 100 (Notable)
1 December 1986	Queiroz, BR	daily rain	95.3 mm (3.8 in)	62.1 mm (2.4 in)	33 years	50 of 100 (Notable)
1 December 1986	Hambantota, LK	daily low max	24.8 C (76.6 F)	1.3 C (2.3 F)	99 years	49 of 100 (Notable)
1 December 1986	Wolcott 3 NW, US	daily rain	36.1 mm (1.4 in)	26.4 mm (1.0 in)	23 years	48 of 100 (Notable)
1 December 1986	Lurnea, AU	daily rain	70.2 mm (2.8 in)	57.8 mm (2.3 in)	24 years	47 of 100 (Notable)
1 December 1986	Vitoria de Santo Antao, BR	daily rain	34.2 mm (1.3 in)	16.9 mm (0.7 in)	64 years	46 of 100 (Notable)
1 December 1986	Parnu, EE	monthly high min	5.5 C (41.9 F)	0.3 C (0.5 F)	87 years	46 of 100 (Notable)
1 December 1986	Trinidad, US	daily snow depth	22.9 cm (9.0 in)	10.2 cm (4.0 in)	76 years	46 of 100 (Notable)
1 December 1986	Wallangarra Post Office, AU	daily rain	52.0 mm (2.0 in)	8.6 mm (0.34 in)	97 years	45 of 100 (Notable)
1 December 1986	Sao Miguel Arcanjo, BR	daily rain	80.4 mm (3.2 in)	47.9 mm (1.9 in)	15 years	45 of 100 (Notable)
1 December 1986	Coloso, PR	monthly rain	73.7 mm (2.9 in)	6.4 mm (0.25 in)	75 years	45 of 100 (Notable)
1 December 1986	Dodge City, US	daily snowfall	8.9 cm (3.5 in)	8.4 cm (3.3 in)	56 years	45 of 100 (Notable)
1 December 1986	Rosedale Post Office, AU	daily rain	106.0 mm (4.2 in)	58.2 mm (2.3 in)	32 years	43 of 100 (Notable)
1 December 1986	Elkader, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	36 years	43 of 100 (Notable)
1 December 1986	Scott City, US	monthly rain	34.0 mm (1.3 in)	1.5 mm (0.06 in)	74 years	43 of 100 (Notable)
1 December 1986	Mungar Junction, AU	daily rain	83.8 mm (3.3 in)	47.0 mm (1.9 in)	43 years	42 of 100 (Notable)
1 December 1986	Scott City, US	daily snow depth	33.0 cm (13.0 in)	12.7 cm (5.0 in)	67 years	42 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

1797 to 1986

Records set or tied on this calendar date in each year from 1797 to 1986. 1986 had 803 records.

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

Records on 12-01 in each year
Year	Records
1797	1
1805	1
1807	2
1810	1
1817	2
1821	1
1823	2
1831	1
1849	1
1856	3
1857	1
1858	1
1861	1
1863	1
1869	2
1871	1
1872	3
1873	6
1875	8
1876	4
1877	1
1879	7
1884	3
1885	3
1886	1
1887	2
1888	3
1889	2
1890	6
1891	1
1892	2
1893	1
1894	1
1895	4
1896	4
1897	10
1898	5
1899	4
1901	5
1902	7
1903	13
1904	4
1905	11
1906	3
1907	8
1908	40
1909	64
1910	39
1911	45
1912	37
1913	53
1914	142
1915	23
1916	29
1917	52
1918	32
1919	78
1920	192
1921	55
1922	85
1923	70
1924	135
1925	145
1926	115
1927	271
1928	85
1929	515
1930	128
1931	337
1932	383
1933	656
1934	667
1935	164
1936	433
1937	238
1938	159
1939	346
1940	300
1941	391
1942	424
1943	93
1944	478
1945	259
1946	224
1947	392
1948	252
1949	313
1950	437
1951	585
1952	762
1953	283
1954	308
1955	624
1956	338
1957	295
1958	531
1959	355
1960	258
1961	373
1962	1,073
1963	282
1964	1,181
1965	598
1966	995
1967	601
1968	883
1969	673
1970	1,299
1971	574
1972	843
1973	888
1974	1,339
1975	1,007
1976	1,294
1977	1,166
1978	777
1979	874
1980	1,019
1981	1,320
1982	1,759
1983	1,275
1984	513
1985	3,874
1986	803
1987	1,020
1988	538
1989	822
1990	514
1991	2,124
1992	552
1993	597
1994	717
1995	1,386
1996	1,448
1997	736
1998	1,698
1999	790
2000	777
2001	1,211
2002	637
2003	627
2004	1,033
2005	815
2006	2,866
2007	1,427
2008	879
2009	927
2010	1,991
2011	947
2012	1,027
2013	400
2014	677
2015	850
2016	384
2017	496
2018	807
2019	803
2020	567
2021	2,030
2022	584
2023	609
2024	636
2025	679

Download the Data

Data for records on 1986-12-01: 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	589
20 to 40	59
40 to 60	26
60 to 80	6
80 to 100	4
100 to 120	6
120 to 140	3