Weather Records on 9 December 1984

588 weather records were set or tied worldwide on 9 December 1984. Highest significance: Coen Post Office, AU.

Key Facts for 9 December 1984

On 9 December 1984, 588 weather records were set or tied at long-record stations worldwide.
295 were record highs and 161 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 14 monthly and 573 daily.
Coen Post Office set a daily record precipitation of 78.0 mm (3.1 in) on 9 December 1984.
Across 157 earlier years (1796 to 2025) the same calendar date averaged 475 records.

Record Map

588 stations

588 station records on 9 December 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 December 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Coen Post Office	Australia	Record daily precipitation	78.0 mm (3.1 in)	44 of 100 (Notable)
Sharon Springs	United States	Record high minimum temperature	8.3 C (46.9 F)	43 of 100 (Notable)
Verhneimbatsk	Russia	Record low maximum temperature	-49.6 C (-57.3 F)	42 of 100 (Notable)
Lebanon	United States	Record daily precipitation	32.5 mm (1.3 in)	41 of 100 (Notable)
Ft Collins	United States	Record high minimum temperature	4.4 C (39.9 F)	40 of 100 (Notable)
Kulani Camp 79	United States	Record daily precipitation	154.2 mm (6.1 in)	40 of 100 (Notable)
Andradina	Brazil	Record daily precipitation	52.6 mm (2.1 in)	39 of 100 (Notable)
Sidney 1SSE	United States	Record high minimum temperature	3.9 C (39.0 F)	38 of 100 (Notable)
Berlin	United States	Record snow depth	58.4 cm (23.0 in)	38 of 100 (Notable)
Springer	United States	Record high minimum temperature	2.8 C (37.0 F)	38 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record high maximum temperature	5.4 C (41.7 F)	37 of 100 (Notable)
Lajas Substn	Puerto Rico [United States]	Record daily precipitation	63.5 mm (2.5 in)	37 of 100 (Notable)
Independence	United States	Record high minimum temperature	6.1 C (43.0 F)	37 of 100 (Notable)
Desterro Do Melo	Brazil	Record daily precipitation	82.0 mm (3.2 in)	36 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record high minimum temperature	1.8 C (35.2 F)	35 of 100 (Notable)
Kurgan	Russia	Record low minimum temperature	-39.8 C (-39.6 F)	35 of 100 (Notable)
Lamar	United States	Record high minimum temperature	-0.6 C (30.9 F)	35 of 100 (Notable)
Tower 2S	United States	Record high maximum temperature	6.1 C (43.0 F)	35 of 100 (Notable)
Princeton	United States	Record high maximum temperature	13.3 C (55.9 F)	35 of 100 (Notable)
Tyndall	United States	Record high minimum temperature	1.7 C (35.1 F)	35 of 100 (Notable)
Greenwood	United States	Record low minimum temperature	-12.2 C (10.0 F)	34 of 100 (Routine)
Hartford Wwtp	United States	Record high maximum temperature	7.2 C (45.0 F)	34 of 100 (Routine)
Kukuihaele Hic 199	United States	Record daily precipitation	55.9 mm (2.2 in)	33 of 100 (Routine)
Burlington	United States	Record high minimum temperature	3.9 C (39.0 F)	32 of 100 (Routine)
Greenville 2 NE	United States	Record snow depth	22.9 cm (9.0 in)	32 of 100 (Routine)
Bonanza	United States	Record daily snowfall	10.2 cm (4.0 in)	32 of 100 (Routine)
Hinckley	United States	Record high maximum temperature	4.4 C (39.9 F)	31 of 100 (Routine)
Halsey 2 W	United States	Record high minimum temperature	2.2 C (36.0 F)	31 of 100 (Routine)
Haleakala Exp Farm 434	United States	Record daily precipitation	116.8 mm (4.6 in)	31 of 100 (Routine)
Makuschino	Russia	Record low maximum temperature	-32.5 C (-26.5 F)	30 of 100 (Routine)
Oshkosh	United States	Record high minimum temperature	2.8 C (37.0 F)	30 of 100 (Routine)
Wessington Springs	United States	Record high maximum temperature	10.6 C (51.1 F)	30 of 100 (Routine)
Monte Verde Paulista	Brazil	Record daily precipitation	76.7 mm (3.0 in)	29 of 100 (Routine)
Dracena	Brazil	Record daily precipitation	64.5 mm (2.5 in)	29 of 100 (Routine)
Petropavlovsk	Kazakhstan	Record low maximum temperature	-29.2 C (-20.6 F)	29 of 100 (Routine)
Shadrinsk	Russia	Record low maximum temperature	-31.7 C (-25.1 F)	29 of 100 (Routine)
Arcadia	United States	Record low maximum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
Albany 3 SE	United States	Record low minimum temperature	-6.7 C (19.9 F)	29 of 100 (Routine)
Denison	United States	Record high minimum temperature	5.0 C (41.0 F)	29 of 100 (Routine)
Gull Lake Dam	United States	Record high maximum temperature	7.2 C (45.0 F)	29 of 100 (Routine)
Winton Pwr Plt	United States	Record high maximum temperature	3.9 C (39.0 F)	29 of 100 (Routine)
Tyumen Amsg	Russia	Record low maximum temperature	-34.8 C (-30.6 F)	28 of 100 (Routine)
Healy	United States	Record high minimum temperature	5.0 C (41.0 F)	28 of 100 (Routine)
Syracuse	United States	Record high maximum temperature	20.6 C (69.1 F)	28 of 100 (Routine)
Roy	United States	Record high maximum temperature	18.9 C (66.0 F)	28 of 100 (Routine)
Intl Falls Intl AP	United States	Record high minimum temperature	-4.4 C (24.1 F)	28 of 100 (Routine)
Bombana (Cfe)	Mexico	Record high minimum temperature	22.2 C (72.0 F)	27 of 100 (Routine)
Faro	Sweden	Record high maximum temperature	9.6 C (49.3 F)	27 of 100 (Routine)
Russell Springs	United States	Record high minimum temperature	1.1 C (34.0 F)	27 of 100 (Routine)
Canby	United States	Record high minimum temperature	1.7 C (35.1 F)	27 of 100 (Routine)
Circleville	United States	Record snow depth	10.2 cm (4.0 in)	27 of 100 (Routine)
Menno	United States	Record high minimum temperature	0.6 C (33.1 F)	27 of 100 (Routine)
Puebla (Dge)	Mexico	Record low minimum temperature	-2.2 C (28.0 F)	26 of 100 (Routine)
Tobolsk	Russia	Record low maximum temperature	-40.2 C (-40.4 F)	26 of 100 (Routine)
Janaul	Russia	Record low minimum temperature	-36.7 C (-34.1 F)	26 of 100 (Routine)
Novosibirsk	Russia	Record low maximum temperature	-32.1 C (-25.8 F)	26 of 100 (Routine)
Arcadia	United States	Record low minimum temperature	-0.6 C (30.9 F)	26 of 100 (Routine)
Tarkio	United States	Record high minimum temperature	2.8 C (37.0 F)	26 of 100 (Routine)
Katanning Comparison	Australia	Record low maximum temperature	18.0 C (64.4 F)	25 of 100 (Routine)
Beer Sheva	Israel	Record low minimum temperature	2.7 C (36.9 F)	25 of 100 (Routine)

Counts by Type and Timescale

588 records

Records set or tied on 9 December 1984 by type: Highest daily maximum 140, Lowest daily maximum 58, Highest daily minimum 155, Lowest daily minimum 103, Heaviest daily rainfall 92, Heaviest daily snowfall 7, Deepest snow cover 33.

Records on 9 December 1984 by type
Record type	Records
Highest daily maximum	140
Lowest daily maximum	58
Highest daily minimum	155
Lowest daily minimum	103
Heaviest daily rainfall	92
Heaviest daily snowfall	7
Deepest snow cover	33

Records on 9 December 1984 by timescale: all-time 1, monthly 14, daily 573.

How Much Records Were Beaten By

460 broken records

Margins by which the 460 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 1984

Top 20 records on 9 December 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 December 1984	Coen Post Office, AU	daily rain	78.0 mm (3.1 in)	32.5 mm (1.3 in)	64 years	44 of 100 (Notable)
9 December 1984	Sharon Springs, US	daily high min	8.3 C (46.9 F)	5.0 C (9.0 F)	89 years	43 of 100 (Notable)
9 December 1984	Verhneimbatsk, RU	all-time low max	-49.6 C (-57.3 F)	1.3 C (2.3 F)	49 years	42 of 100 (Notable)
9 December 1984	Lebanon, US	daily rain	32.5 mm (1.3 in)	22.3 mm (0.9 in)	2 years	41 of 100 (Notable)
9 December 1984	Ft Collins, US	daily high min	4.4 C (39.9 F)	4.4 C (7.9 F)	81 years	40 of 100 (Notable)
9 December 1984	Kulani Camp 79, US	daily rain	154.2 mm (6.1 in)	77.5 mm (3.1 in)	30 years	40 of 100 (Notable)
9 December 1984	Andradina, BR	daily rain	52.6 mm (2.1 in)	42.1 mm (1.7 in)	25 years	39 of 100 (Notable)
9 December 1984	Sidney 1SSE, US	daily high min	3.9 C (39.0 F)	2.2 C (4.0 F)	87 years	38 of 100 (Notable)
9 December 1984	Berlin, US	daily snow depth	58.4 cm (23.0 in)	12.7 cm (5.0 in)	67 years	38 of 100 (Notable)
9 December 1984	Springer, US	daily high min	2.8 C (37.0 F)	3.9 C (7.0 F)	79 years	38 of 100 (Notable)
9 December 1984	Bjelasnica, BA	daily high max	5.4 C (41.7 F)	2.4 C (4.3 F)	79 years	37 of 100 (Notable)
9 December 1984	Lajas Substn, PR	daily rain	63.5 mm (2.5 in)	31.7 mm (1.2 in)	21 years	37 of 100 (Notable)
9 December 1984	Independence, US	daily high min	6.1 C (43.0 F)	2.2 C (4.0 F)	78 years	37 of 100 (Notable)
9 December 1984	Desterro Do Melo, BR	daily rain	82.0 mm (3.2 in)	38.0 mm (1.5 in)	28 years	36 of 100 (Notable)
9 December 1984	Bjelasnica, BA	daily high min	1.8 C (35.2 F)	2.4 C (4.3 F)	78 years	35 of 100 (Notable)
9 December 1984	Kurgan, RU	daily low min	-39.8 C (-39.6 F)	0.7 C (1.3 F)	89 years	35 of 100 (Notable)
9 December 1984	Lamar, US	daily high min	-0.6 C (30.9 F)	0.5 C (0.9 F)	86 years	35 of 100 (Notable)
9 December 1984	Tower 2S, US	daily high max	6.1 C (43.0 F)	0.5 C (0.9 F)	87 years	35 of 100 (Notable)
9 December 1984	Princeton, US	daily high max	13.3 C (55.9 F)	0.5 C (0.9 F)	87 years	35 of 100 (Notable)
9 December 1984	Tyndall, US	daily high min	1.7 C (35.1 F)	0.6 C (1.1 F)	87 years	35 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 1984

Records set or tied on this calendar date in each year from 1796 to 1984. 1984 had 588 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 1984-12-09: 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	431
20 to 40	18
40 to 60	5
60 to 80	4
80 to 100	1
100 to 120	0
120 to 140	1