Weather Records on 4 December 1986

549 weather records were set or tied worldwide on 4 December 1986. Highest significance: Pooncarie (Moorara), AU.

Key Facts for 4 December 1986

On 4 December 1986, 549 weather records were set or tied at long-record stations worldwide.
237 were record highs and 69 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 86 monthly and 463 daily.
Pooncarie (Moorara) set a daily record precipitation of 47.0 mm (1.9 in) on 4 December 1986.
Across 166 earlier years (1796 to 2025) the same calendar date averaged 463 records.

Record Map

549 stations

549 station records on 4 December 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 December 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pooncarie (Moorara)	Australia	Record daily precipitation	47.0 mm (1.9 in)	61 of 100 (Major)
Malin Head	Ireland	Record daily precipitation	39.6 mm (1.6 in)	58 of 100 (Notable)
E Jordan	United States	Record daily snowfall	25.4 cm (10.0 in)	57 of 100 (Notable)
Springvale	Australia	Record daily precipitation	26.0 mm (1.0 in)	56 of 100 (Notable)
Barnes	United States	Record daily precipitation	69.1 mm (2.7 in)	56 of 100 (Notable)
Traneberg	Sweden	Record daily precipitation	26.0 mm (1.0 in)	52 of 100 (Notable)
Booleroo Centre	Australia	Record daily precipitation	26.6 mm (1.0 in)	51 of 100 (Notable)
Lednik Phedchenko (Im. Gorbuno	Tajikistan	Record daily precipitation	50.5 mm (2.0 in)	51 of 100 (Notable)
Bairro Igrejinha	Brazil	Record daily precipitation	110.2 mm (4.3 in)	50 of 100 (Notable)
Tibooburra (Olive Downs)	Australia	Record daily precipitation	53.0 mm (2.1 in)	49 of 100 (Notable)
Koebenhavn: Landbohojskolen-1	Denmark	Record high minimum temperature	9.4 C (48.9 F)	47 of 100 (Notable)
Boras	Sweden	Record high minimum temperature	8.3 C (46.9 F)	47 of 100 (Notable)
Cordillo Downs	Australia	Record daily precipitation	32.0 mm (1.3 in)	46 of 100 (Notable)
Nordby (Fano)	Denmark	Record high minimum temperature	9.4 C (48.9 F)	46 of 100 (Notable)
Ballyshannon (Cathleens Fall)	Ireland	Record daily precipitation	33.7 mm (1.3 in)	45 of 100 (Notable)
Tres Zapotes	Mexico	Record daily precipitation	85.3 mm (3.4 in)	45 of 100 (Notable)
Kwajalein	Marshall Islands	Record daily precipitation	137.7 mm (5.4 in)	43 of 100 (Notable)
Farmington	United States	Record daily precipitation	40.4 mm (1.6 in)	42 of 100 (Notable)
Uman	Ukraine	Record high maximum temperature	11.7 C (53.1 F)	41 of 100 (Notable)
Mossman Central Mill	Australia	Record daily precipitation	74.0 mm (2.9 in)	40 of 100 (Notable)
Itapeuna	Brazil	Record daily precipitation	78.4 mm (3.1 in)	40 of 100 (Notable)
Miracatu	Brazil	Record daily precipitation	86.1 mm (3.4 in)	38 of 100 (Notable)
Cockburn (Burta)	Australia	Record daily precipitation	37.0 mm (1.5 in)	37 of 100 (Notable)
Ultima (Post Office)	Australia	Record daily precipitation	35.6 mm (1.4 in)	37 of 100 (Notable)
Kushiro	Japan	Record daily precipitation	35.0 mm (1.4 in)	37 of 100 (Notable)
Ellsworth	United States	Record daily precipitation	39.4 mm (1.6 in)	37 of 100 (Notable)
Creighton	United States	Record daily snowfall	6.6 cm (2.6 in)	37 of 100 (Notable)
Erldunda	Australia	Record daily precipitation	27.0 mm (1.1 in)	36 of 100 (Notable)
Halmstad	Sweden	Record high minimum temperature	8.1 C (46.6 F)	36 of 100 (Notable)
Uppsala_Aut	Sweden	Record high minimum temperature	7.2 C (45.0 F)	36 of 100 (Notable)
Scott City	United States	Record snow depth	22.9 cm (9.0 in)	36 of 100 (Notable)
Noongaar	Australia	Record daily precipitation	27.0 mm (1.1 in)	34 of 100 (Routine)
Parnu	Estonia	Record high maximum temperature	7.8 C (46.0 F)	34 of 100 (Routine)
Hafslo	Norway	Record daily precipitation	48.1 mm (1.9 in)	33 of 100 (Routine)
Karlstad	Sweden	Record high minimum temperature	7.7 C (45.9 F)	33 of 100 (Routine)
Beaver Is	United States	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Swan Hill (Murray Downs)	Australia	Record daily precipitation	41.0 mm (1.6 in)	31 of 100 (Routine)
Halmstad	Sweden	Record high maximum temperature	9.2 C (48.6 F)	31 of 100 (Routine)
Finch Hatton Cook St	Australia	Record daily precipitation	56.5 mm (2.2 in)	30 of 100 (Routine)
Ribeirao Do Sul	Brazil	Record daily precipitation	79.6 mm (3.1 in)	30 of 100 (Routine)
Pismo Beach	United States	Record low minimum temperature	-3.3 C (26.1 F)	30 of 100 (Routine)
Westfield 2 SSE	United States	Record daily snowfall	18.0 cm (7.1 in)	30 of 100 (Routine)
Lethebrook	Australia	Record daily precipitation	78.8 mm (3.1 in)	29 of 100 (Routine)
Marmboo	Australia	Record daily precipitation	38.0 mm (1.5 in)	29 of 100 (Routine)
Olands Norra Udde	Sweden	Record high minimum temperature	9.0 C (48.2 F)	29 of 100 (Routine)
Eskdalemuir	United Kingdom	Record daily precipitation	32.7 mm (1.3 in)	29 of 100 (Routine)
Kiev	Ukraine	Record high maximum temperature	10.8 C (51.4 F)	29 of 100 (Routine)
Canandaigua 3 S	United States	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Mt Morris 2W	United States	Record daily snowfall	10.2 cm (4.0 in)	29 of 100 (Routine)
Kuttabul Post Office	Australia	Record daily precipitation	63.2 mm (2.5 in)	28 of 100 (Routine)
Kerang	Australia	Record daily precipitation	26.6 mm (1.0 in)	28 of 100 (Routine)
Bairro Do Pinheiro	Brazil	Record daily precipitation	59.7 mm (2.4 in)	28 of 100 (Routine)
Serrana Do Sul	Brazil	Record daily precipitation	63.7 mm (2.5 in)	28 of 100 (Routine)
Riga	Latvia	Record high minimum temperature	8.6 C (47.5 F)	28 of 100 (Routine)
Flahult	Sweden	Record high minimum temperature	7.7 C (45.9 F)	28 of 100 (Routine)
Faro	Sweden	Record high minimum temperature	9.0 C (48.2 F)	28 of 100 (Routine)
Landsort	Sweden	Record high minimum temperature	7.2 C (45.0 F)	28 of 100 (Routine)
Pleystowe Sugar Mill	Australia	Record daily precipitation	42.0 mm (1.7 in)	27 of 100 (Routine)
Juquia	Brazil	Record daily precipitation	82.4 mm (3.2 in)	27 of 100 (Routine)
Iguape	Brazil	Record daily precipitation	66.8 mm (2.6 in)	27 of 100 (Routine)

Counts by Type and Timescale

549 records

Records set or tied on 4 December 1986 by type: Highest daily maximum 82, Lowest daily maximum 38, Highest daily minimum 155, Lowest daily minimum 31, Heaviest daily rainfall 224, Heaviest daily snowfall 17, Deepest snow cover 2.

Records on 4 December 1986 by type
Record type	Records
Highest daily maximum	82
Lowest daily maximum	38
Highest daily minimum	155
Lowest daily minimum	31
Heaviest daily rainfall	224
Heaviest daily snowfall	17
Deepest snow cover	2

Records on 4 December 1986 by timescale: all-time 0, monthly 86, daily 463.

How Much Records Were Beaten By

479 broken records

Margins by which the 479 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

4 December 1986

Top 20 records on 4 December 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 December 1986	Pooncarie (Moorara), AU	daily rain	47.0 mm (1.9 in)	37.3 mm (1.5 in)	63 years	61 of 100 (Major)
4 December 1986	Malin Head, IE	monthly rain	39.6 mm (1.6 in)	8.7 mm (0.34 in)	61 years	58 of 100 (Notable)
4 December 1986	E Jordan, US	daily snowfall	25.4 cm (10.0 in)	15.2 cm (6.0 in)	56 years	57 of 100 (Notable)
4 December 1986	Springvale, AU	daily rain	26.0 mm (1.0 in)	26.0 mm (1.0 in)	94 years	56 of 100 (Notable)
4 December 1986	Barnes, US	monthly rain	69.1 mm (2.7 in)	18.3 mm (0.7 in)	43 years	56 of 100 (Notable)
4 December 1986	Traneberg, SE	daily rain	26.0 mm (1.0 in)	18.3 mm (0.7 in)	27 years	52 of 100 (Notable)
4 December 1986	Booleroo Centre, AU	daily rain	26.6 mm (1.0 in)	10.1 mm (0.4 in)	99 years	51 of 100 (Notable)
4 December 1986	Lednik Phedchenko (Im. Gorbuno, TJ	monthly rain	50.5 mm (2.0 in)	16.8 mm (0.7 in)	18 years	51 of 100 (Notable)
4 December 1986	Bairro Igrejinha, BR	daily rain	110.2 mm (4.3 in)	84.2 mm (3.3 in)	24 years	50 of 100 (Notable)
4 December 1986	Tibooburra (Olive Downs), AU	daily rain	53.0 mm (2.1 in)	42.8 mm (1.7 in)	56 years	49 of 100 (Notable)
4 December 1986	Koebenhavn: Landbohojskolen-1, DK	monthly high min	9.4 C (48.9 F)	0.4 C (0.7 F)	87 years	47 of 100 (Notable)
4 December 1986	Boras, SE	monthly high min	8.3 C (46.9 F)	0.8 C (1.4 F)	87 years	47 of 100 (Notable)
4 December 1986	Cordillo Downs, AU	daily rain	32.0 mm (1.3 in)	26.7 mm (1.1 in)	56 years	46 of 100 (Notable)
4 December 1986	Nordby (Fano), DK	monthly high min	9.4 C (48.9 F)	0.1 C (0.2 F)	87 years	46 of 100 (Notable)
4 December 1986	Ballyshannon (Cathleens Fall), IE	daily rain	33.7 mm (1.3 in)	15.9 mm (0.6 in)	39 years	45 of 100 (Notable)
4 December 1986	Tres Zapotes, MX	daily rain	85.3 mm (3.4 in)	65.0 mm (2.6 in)	23 years	45 of 100 (Notable)
4 December 1986	Kwajalein, MH	daily rain	137.7 mm (5.4 in)	93.2 mm (3.7 in)	0 years	43 of 100 (Notable)
4 December 1986	Farmington, US	daily rain	40.4 mm (1.6 in)	10.4 mm (0.4 in)	84 years	42 of 100 (Notable)
4 December 1986	Uman, UA	daily high max	11.7 C (53.1 F)	1.2 C (2.2 F)	98 years	41 of 100 (Notable)
4 December 1986	Mossman Central Mill, AU	daily rain	74.0 mm (2.9 in)	33.4 mm (1.3 in)	71 years	40 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 549 records.

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

Records on 12-04 in each year
Year	Records
1796	2
1797	1
1810	2
1823	1
1829	2
1846	1
1847	1
1849	1
1850	1
1852	3
1854	1
1855	5
1856	2
1858	1
1859	1
1860	1
1861	1
1865	1
1866	1
1867	1
1868	2
1870	3
1872	1
1873	1
1875	2
1876	1
1878	1
1879	7
1882	3
1883	2
1885	1
1886	4
1887	1
1888	1
1889	1
1891	4
1892	9
1896	2
1897	5
1898	9
1899	3
1900	13
1901	7
1902	15
1903	7
1904	6
1905	16
1906	25
1907	5
1908	8
1909	45
1910	7
1911	27
1912	46
1913	59
1914	61
1915	61
1916	95
1917	31
1918	27
1919	94
1920	54
1921	60
1922	72
1923	142
1924	129
1925	266
1926	174
1927	184
1928	143
1929	432
1930	221
1931	411
1932	265
1933	524
1934	149
1935	330
1936	637
1937	148
1938	275
1939	443
1940	600
1941	1,326
1942	450
1943	259
1944	377
1945	332
1946	515
1947	577
1948	504
1949	120
1950	852
1951	583
1952	269
1953	738
1954	689
1955	811
1956	692
1957	350
1958	529
1959	212
1960	628
1961	570
1962	574
1963	285
1964	1,195
1965	590
1966	1,047
1967	428
1968	775
1969	366
1970	933
1971	768
1972	1,973
1973	1,124
1974	651
1975	757
1976	669
1977	654
1978	1,582
1979	943
1980	976
1981	638
1982	2,138
1983	1,284
1984	796
1985	1,239
1986	549
1987	624
1988	764
1989	1,541
1990	1,164
1991	1,178
1992	1,075
1993	708
1994	1,029
1995	972
1996	684
1997	654
1998	2,549
1999	930
2000	895
2001	974
2002	1,478
2003	595
2004	721
2005	1,075
2006	1,510
2007	1,005
2008	652
2009	1,114
2010	1,874
2011	1,252
2012	1,482
2013	1,227
2014	629
2015	428
2016	533
2017	607
2018	563
2019	522
2020	424
2021	942
2022	437
2023	736
2024	590
2025	535

Download the Data

Data for records on 1986-12-04: 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	436
20 to 40	32
40 to 60	2
60 to 80	4
80 to 100	3
100 to 120	1
120 to 140	0
140 to 160	1