Weather Records on 18 December 1984

1,439 weather records were set or tied worldwide on 18 December 1984. Highest significance: Noonbah, AU.

Key Facts for 18 December 1984

On 18 December 1984, 1,439 weather records were set or tied at long-record stations worldwide.
835 were record highs and 217 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 24 monthly and 1,414 daily.
Noonbah set a monthly record daily precipitation of 127.0 mm (5.0 in) on 18 December 1984.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 474 records.

Record Map

1,439 stations

1,439 station records on 18 December 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 December 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Noonbah	Australia	Record daily precipitation	127.0 mm (5.0 in)	73 of 100 (Major)
Hagansport	United States	Record daily precipitation	92.7 mm (3.6 in)	65 of 100 (Major)
Greenville Kgvl Radio	United States	Record daily precipitation	63.5 mm (2.5 in)	60 of 100 (Major)
McKinney Muni AP	United States	Record daily precipitation	64.0 mm (2.5 in)	55 of 100 (Notable)
Anna	United States	Record daily precipitation	57.2 mm (2.3 in)	54 of 100 (Notable)
Carnarvon Station	Australia	Record daily precipitation	54.0 mm (2.1 in)	52 of 100 (Notable)
Kirwin Dam	United States	Record daily precipitation	35.1 mm (1.4 in)	52 of 100 (Notable)
Lovelaceville	United States	Record daily precipitation	72.1 mm (2.8 in)	52 of 100 (Notable)
Atlantic City Marina	United States	Record high maximum temperature	22.2 C (72.0 F)	52 of 100 (Notable)
Bonham 3NNE	United States	Record daily precipitation	63.5 mm (2.5 in)	50 of 100 (Notable)
Surbiton Station	Australia	Record daily precipitation	100.0 mm (3.9 in)	49 of 100 (Notable)
Boxelder 3 NNE	United States	Record daily precipitation	77.5 mm (3.1 in)	49 of 100 (Notable)
Grapevine Dam	United States	Record daily precipitation	38.1 mm (1.5 in)	49 of 100 (Notable)
Wills Pt	United States	Record daily precipitation	46.2 mm (1.8 in)	49 of 100 (Notable)
Lavon Dam	United States	Record daily precipitation	56.1 mm (2.2 in)	48 of 100 (Notable)
Waxahachie	United States	Record daily precipitation	53.3 mm (2.1 in)	48 of 100 (Notable)
Kingaroy Prince Street	Australia	Record daily precipitation	60.2 mm (2.4 in)	46 of 100 (Notable)
Caliente	United States	Record daily snowfall	6.4 cm (2.5 in)	46 of 100 (Notable)
Snowville	United States	Record daily snowfall	25.4 cm (10.0 in)	46 of 100 (Notable)
Randsburg	United States	Record daily snowfall	35.6 cm (14.0 in)	45 of 100 (Notable)
Clarksville 2NE	United States	Record daily precipitation	43.7 mm (1.7 in)	45 of 100 (Notable)
Emory	United States	Record daily precipitation	54.6 mm (2.1 in)	45 of 100 (Notable)
Addison	United States	Record high maximum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Elmira	United States	Record high maximum temperature	17.2 C (63.0 F)	44 of 100 (Notable)
Ennis	United States	Record daily precipitation	59.7 mm (2.4 in)	44 of 100 (Notable)
Sulphur Springs	United States	Record daily precipitation	150.9 mm (5.9 in)	44 of 100 (Notable)
Liberty 1 NE	United States	Record high maximum temperature	14.4 C (57.9 F)	43 of 100 (Notable)
Farmersville	United States	Record daily precipitation	60.2 mm (2.4 in)	43 of 100 (Notable)
Kaufman 3 SE	United States	Record daily precipitation	37.6 mm (1.5 in)	43 of 100 (Notable)
Wooroolin Post Office	Australia	Record daily precipitation	50.6 mm (2.0 in)	42 of 100 (Notable)
Elandsfontein	South Africa	Record daily precipitation	33.0 mm (1.3 in)	42 of 100 (Notable)
Mt Pleasant	United States	Record daily precipitation	35.3 mm (1.4 in)	42 of 100 (Notable)
Baltimore Customs House	United States	Record high minimum temperature	9.4 C (48.9 F)	42 of 100 (Notable)
Bluff Post Office	Australia	Record daily precipitation	49.6 mm (2.0 in)	41 of 100 (Notable)
Hesperia 4 WNW	United States	Record high maximum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Boswell 1 S	United States	Record daily precipitation	45.2 mm (1.8 in)	41 of 100 (Notable)
Hewitt	United States	Record daily precipitation	63.8 mm (2.5 in)	41 of 100 (Notable)
Paarl (Tnk)	South Africa	Record daily precipitation	34.2 mm (1.3 in)	40 of 100 (Notable)
Trenton	United States	Record daily precipitation	62.5 mm (2.5 in)	40 of 100 (Notable)
Bishop AP	United States	Record low maximum temperature	-2.2 C (28.0 F)	40 of 100 (Notable)
Tangorin	Australia	Record daily precipitation	37.2 mm (1.5 in)	39 of 100 (Notable)
Storrs	United States	Record high maximum temperature	14.4 C (57.9 F)	39 of 100 (Notable)
Bloomington Indiana UNIV	United States	Record high maximum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Ozone	United States	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)
Mt Vernon	United States	Record high maximum temperature	20.6 C (69.1 F)	38 of 100 (Notable)
Toms River	United States	Record high maximum temperature	18.3 C (64.9 F)	38 of 100 (Notable)
Cimarron 4 SW	United States	Record snow depth	12.7 cm (5.0 in)	38 of 100 (Notable)
Hugo	United States	Record daily precipitation	44.5 mm (1.8 in)	38 of 100 (Notable)
State College	United States	Record high maximum temperature	18.3 C (64.9 F)	38 of 100 (Notable)
Avalon Pleasure Pier	United States	Record daily precipitation	59.9 mm (2.4 in)	37 of 100 (Notable)
Denton 2 E	United States	Record high maximum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Lowville	United States	Record high maximum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Dayton Mcd	United States	Record high maximum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Burdekin Shire Council	Australia	Record high minimum temperature	26.5 C (79.7 F)	36 of 100 (Notable)
Camboon Station	Australia	Record daily precipitation	36.0 mm (1.4 in)	36 of 100 (Notable)
Franklinville	United States	Record high maximum temperature	11.7 C (53.1 F)	36 of 100 (Notable)
Defiance	United States	Record high maximum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
Rosser	United States	Record daily precipitation	45.7 mm (1.8 in)	36 of 100 (Notable)
Wolfe City	United States	Record daily precipitation	42.2 mm (1.7 in)	36 of 100 (Notable)
Postmyr I Drangedal	Norway	Record daily precipitation	32.8 mm (1.3 in)	35 of 100 (Notable)

Counts by Type and Timescale

1,439 records

Records set or tied on 18 December 1984 by type: Highest daily maximum 540, Lowest daily maximum 133, Highest daily minimum 295, Lowest daily minimum 84, Heaviest daily rainfall 302, Heaviest daily snowfall 31, Deepest snow cover 54.

Records on 18 December 1984 by type
Record type	Records
Highest daily maximum	540
Lowest daily maximum	133
Highest daily minimum	295
Lowest daily minimum	84
Heaviest daily rainfall	302
Heaviest daily snowfall	31
Deepest snow cover	54

Records on 18 December 1984 by timescale: all-time 1, monthly 24, daily 1,414.

How Much Records Were Beaten By

1,180 broken records

Margins by which the 1,180 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 508.0. Ties are not counted.

Top 20 by Significance

18 December 1984

Top 20 records on 18 December 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1984	Noonbah, AU	monthly rain	127.0 mm (5.0 in)	53.3 mm (2.1 in)	62 years	73 of 100 (Major)
18 December 1984	Hagansport, US	daily rain	92.7 mm (3.6 in)	79.0 mm (3.1 in)	61 years	65 of 100 (Major)
18 December 1984	Greenville Kgvl Radio, US	daily rain	63.5 mm (2.5 in)	46.2 mm (1.8 in)	65 years	60 of 100 (Major)
18 December 1984	McKinney Muni AP, US	daily rain	64.0 mm (2.5 in)	41.1 mm (1.6 in)	65 years	55 of 100 (Notable)
18 December 1984	Anna, US	daily rain	57.2 mm (2.3 in)	26.7 mm (1.1 in)	85 years	54 of 100 (Notable)
18 December 1984	Carnarvon Station, AU	daily rain	54.0 mm (2.1 in)	45.1 mm (1.8 in)	49 years	52 of 100 (Notable)
18 December 1984	Kirwin Dam, US	daily rain	35.1 mm (1.4 in)	35.1 mm (1.4 in)	32 years	52 of 100 (Notable)
18 December 1984	Lovelaceville, US	daily rain	72.1 mm (2.8 in)	42.4 mm (1.7 in)	55 years	52 of 100 (Notable)
18 December 1984	Atlantic City Marina, US	monthly high max	22.2 C (72.0 F)	2.2 C (4.0 F)	94 years	52 of 100 (Notable)
18 December 1984	Bonham 3NNE, US	daily rain	63.5 mm (2.5 in)	36.1 mm (1.4 in)	60 years	50 of 100 (Notable)
18 December 1984	Surbiton Station, AU	daily rain	100.0 mm (3.9 in)	52.0 mm (2.0 in)	40 years	49 of 100 (Notable)
18 December 1984	Boxelder 3 NNE, US	daily rain	77.5 mm (3.1 in)	70.1 mm (2.8 in)	23 years	49 of 100 (Notable)
18 December 1984	Grapevine Dam, US	daily rain	38.1 mm (1.5 in)	35.6 mm (1.4 in)	28 years	49 of 100 (Notable)
18 December 1984	Wills Pt, US	daily rain	46.2 mm (1.8 in)	28.4 mm (1.1 in)	79 years	49 of 100 (Notable)
18 December 1984	Lavon Dam, US	daily rain	56.1 mm (2.2 in)	51.8 mm (2.0 in)	19 years	48 of 100 (Notable)
18 December 1984	Waxahachie, US	daily rain	53.3 mm (2.1 in)	27.9 mm (1.1 in)	70 years	48 of 100 (Notable)
18 December 1984	Kingaroy Prince Street, AU	daily rain	60.2 mm (2.4 in)	33.3 mm (1.3 in)	54 years	46 of 100 (Notable)
18 December 1984	Caliente, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	80 years	46 of 100 (Notable)
18 December 1984	Snowville, US	daily snowfall	25.4 cm (10.0 in)	10.2 cm (4.0 in)	55 years	46 of 100 (Notable)
18 December 1984	Randsburg, US	all-time snowfall	35.6 cm (14.0 in)	3.8 cm (1.5 in)	46 years	45 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

1793 to 1984

Records set or tied on this calendar date in each year from 1793 to 1984. 1984 had 1,439 records.

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

Records on 12-18 in each year
Year	Records
1793	1
1796	1
1805	1
1814	1
1825	1
1846	1
1849	1
1852	2
1858	1
1859	4
1862	2
1864	1
1868	1
1873	1
1875	1
1876	2
1878	1
1881	2
1882	1
1884	2
1886	1
1887	1
1888	1
1889	4
1890	5
1892	4
1894	8
1895	1
1897	4
1898	9
1899	3
1900	2
1901	6
1902	33
1903	11
1904	25
1905	3
1906	21
1907	15
1908	16
1909	18
1910	19
1911	9
1912	33
1913	38
1914	20
1915	28
1916	57
1917	62
1918	21
1919	117
1920	77
1921	123
1922	108
1923	378
1924	480
1925	74
1926	173
1927	151
1928	165
1929	366
1930	230
1931	360
1932	353
1933	506
1934	209
1935	138
1936	466
1937	459
1938	185
1939	900
1940	242
1941	213
1942	281
1943	419
1944	191
1945	598
1946	199
1947	266
1948	354
1949	561
1950	289
1951	867
1952	450
1953	373
1954	507
1955	611
1956	333
1957	901
1958	524
1959	477
1960	477
1961	885
1962	759
1963	571
1964	840
1965	402
1966	644
1967	1,105
1968	488
1969	376
1970	502
1971	387
1972	375
1973	1,008
1974	229
1975	625
1976	459
1977	992
1978	946
1979	1,087
1980	772
1981	1,362
1982	537
1983	2,014
1984	1,439
1985	1,384
1986	875
1987	1,505
1988	1,061
1989	1,818
1990	1,367
1991	756
1992	1,045
1993	697
1994	643
1995	1,065
1996	1,833
1997	1,195
1998	863
1999	923
2000	1,572
2001	906
2002	1,437
2003	987
2004	506
2005	987
2006	1,167
2007	746
2008	1,014
2009	1,253
2010	1,322
2011	697
2012	729
2013	513
2014	556
2015	1,254
2016	1,821
2017	516
2018	464
2019	679
2020	326
2021	762
2022	536
2023	1,293
2024	780
2025	994

Download the Data

Data for records on 1984-12-18: 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 100	1,172
100 to 200	6
200 to 300	1
300 to 400	0
400 to 500	0
500 to 600	1