Weather Records on 30 December 1963

567 weather records were set or tied worldwide on 30 December 1963. Highest significance: Mossoro, BR.

Key Facts for 30 December 1963

On 30 December 1963, 567 weather records were set or tied at long-record stations worldwide.
162 were record highs and 157 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 11 monthly and 554 daily.
Mossoro set a daily record precipitation of 54.2 mm (2.1 in) on 30 December 1963.
Across 154 earlier years (1799 to 2025) the same calendar date averaged 495 records.

Record Map

567 stations

567 station records on 30 December 1963 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 December 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mossoro	Brazil	Record daily precipitation	54.2 mm (2.1 in)	57 of 100 (Notable)
Nebo	South Africa	Record daily precipitation	79.0 mm (3.1 in)	57 of 100 (Notable)
Cape Race (Aut)	Canada	Record daily snowfall	55.6 cm (21.9 in)	55 of 100 (Notable)
Quebrangulo	Brazil	Record daily precipitation	85.4 mm (3.4 in)	49 of 100 (Notable)
Ft Pierce	United States	Record daily precipitation	47.2 mm (1.9 in)	46 of 100 (Notable)
Snyder	United States	Record daily snowfall	12.7 cm (5.0 in)	45 of 100 (Notable)
Allardt	United States	Record snow depth	15.2 cm (6.0 in)	43 of 100 (Notable)
Tingha Post Office	Australia	Record daily precipitation	46.5 mm (1.8 in)	41 of 100 (Notable)
Riacho de Santana	Brazil	Record daily precipitation	86.3 mm (3.4 in)	41 of 100 (Notable)
Snyder	United States	Record snow depth	12.7 cm (5.0 in)	41 of 100 (Notable)
Homestead Exp STN	United States	Record daily precipitation	32.3 mm (1.3 in)	39 of 100 (Notable)
Harrisville	United States	Record low minimum temperature	-25.6 C (-14.1 F)	39 of 100 (Notable)
Itapeim	Brazil	Record daily precipitation	25.1 mm (1.0 in)	36 of 100 (Notable)
Barraba (Neranghi)	Australia	Record daily precipitation	40.4 mm (1.6 in)	34 of 100 (Routine)
Pedro II	Brazil	Record daily precipitation	53.2 mm (2.1 in)	34 of 100 (Routine)
Santa Cruz	United States	Record high maximum temperature	26.7 C (80.1 F)	34 of 100 (Routine)
Hemlock	United States	Record snow depth	25.4 cm (10.0 in)	34 of 100 (Routine)
Miami	United States	Record snow depth	10.2 cm (4.0 in)	34 of 100 (Routine)
Spur	United States	Record daily snowfall	7.6 cm (3.0 in)	34 of 100 (Routine)
Santa Paula	United States	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Post	United States	Record daily snowfall	6.4 cm (2.5 in)	32 of 100 (Routine)
Crosbyton	United States	Record daily snowfall	5.1 cm (2.0 in)	31 of 100 (Routine)
Hermannsburg	Australia	Record daily precipitation	53.1 mm (2.1 in)	30 of 100 (Routine)
Long Beach Pub Svc	United States	Record high minimum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
U C L A	United States	Record high minimum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Rotan	United States	Record snow depth	15.2 cm (6.0 in)	30 of 100 (Routine)
Yorba Linda	United States	Record high minimum temperature	18.9 C (66.0 F)	29 of 100 (Routine)
Maquoketa	United States	Record low minimum temperature	-27.8 C (-18.0 F)	29 of 100 (Routine)
Pennington Gap	United States	Record snow depth	12.7 cm (5.0 in)	29 of 100 (Routine)
Sedro-Woolley	United States	Record high maximum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Afogados da Ingazeira (Dnocs)	Brazil	Record daily precipitation	34.2 mm (1.3 in)	28 of 100 (Routine)
Quesnel	Canada	Record high minimum temperature	2.2 C (36.0 F)	28 of 100 (Routine)
Paducah	United States	Record low minimum temperature	-13.3 C (8.1 F)	28 of 100 (Routine)
Crowell	United States	Record daily snowfall	5.1 cm (2.0 in)	28 of 100 (Routine)
Corning	United States	Record low maximum temperature	-3.3 C (26.1 F)	27 of 100 (Routine)
Corona	United States	Record high minimum temperature	14.4 C (57.9 F)	27 of 100 (Routine)
Elkader 6 SSW	United States	Record low minimum temperature	-28.9 C (-20.0 F)	27 of 100 (Routine)
Beloit	United States	Record low maximum temperature	-13.9 C (7.0 F)	27 of 100 (Routine)
Boulia Airport	Australia	Record high minimum temperature	31.1 C (88.0 F)	26 of 100 (Routine)
Princesa Isabel	Brazil	Record daily precipitation	33.5 mm (1.3 in)	26 of 100 (Routine)
Calgary Int'l A	Canada	Record high maximum temperature	10.6 C (51.1 F)	26 of 100 (Routine)
Fort Vermilion Cda	Canada	Record high maximum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
San Pedro	United States	Record high minimum temperature	18.3 C (64.9 F)	26 of 100 (Routine)
Yosemite Park HQ	United States	Record high maximum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Inverness 3 SE	United States	Record daily precipitation	29.0 mm (1.1 in)	26 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record high maximum temperature	11.7 C (53.1 F)	26 of 100 (Routine)
Aspermont	United States	Record daily snowfall	10.2 cm (4.0 in)	26 of 100 (Routine)
Viroqua	United States	Record low minimum temperature	-27.8 C (-18.0 F)	26 of 100 (Routine)
Avalon Pleasure Pier	United States	Record high maximum temperature	25.6 C (78.1 F)	25 of 100 (Routine)
Lake Spaulding	United States	Record high minimum temperature	5.0 C (41.0 F)	25 of 100 (Routine)
Farmland 5 NNW	United States	Record low minimum temperature	-23.9 C (-11.0 F)	25 of 100 (Routine)
Harbor Beach 1 SSE	United States	Record low minimum temperature	-18.9 C (-2.0 F)	25 of 100 (Routine)
Rogersville 1 NE	United States	Record snow depth	10.2 cm (4.0 in)	25 of 100 (Routine)
Annex Creek	United States	Record daily precipitation	34.3 mm (1.4 in)	25 of 100 (Routine)
Muskegon Co AP	United States	Record daily snowfall	9.1 cm (3.6 in)	25 of 100 (Routine)
Quatsino	Canada	Record high maximum temperature	15.0 C (59.0 F)	24 of 100 (Routine)
Ozuluama	Mexico	Record low maximum temperature	7.8 C (46.0 F)	24 of 100 (Routine)
Santa Ana Fire STN	United States	Record high minimum temperature	14.4 C (57.9 F)	24 of 100 (Routine)
Antioch	United States	Record low minimum temperature	-21.7 C (-7.1 F)	24 of 100 (Routine)
Aurora Water	United States	Record low maximum temperature	-12.8 C (9.0 F)	24 of 100 (Routine)

Counts by Type and Timescale

567 records

Records set or tied on 30 December 1963 by type: Highest daily maximum 102, Lowest daily maximum 60, Highest daily minimum 60, Lowest daily minimum 97, Heaviest daily rainfall 194, Heaviest daily snowfall 29, Deepest snow cover 25.

Records on 30 December 1963 by type
Record type	Records
Highest daily maximum	102
Lowest daily maximum	60
Highest daily minimum	60
Lowest daily minimum	97
Heaviest daily rainfall	194
Heaviest daily snowfall	29
Deepest snow cover	25

Records on 30 December 1963 by timescale: all-time 2, monthly 11, daily 554.

How Much Records Were Beaten By

459 broken records

Margins by which the 459 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

30 December 1963

Top 20 records on 30 December 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 December 1963	Mossoro, BR	daily rain	54.2 mm (2.1 in)	39.3 mm (1.5 in)	42 years	57 of 100 (Notable)
30 December 1963	Nebo, ZA	daily rain	79.0 mm (3.1 in)	58.4 mm (2.3 in)	42 years	57 of 100 (Notable)
30 December 1963	Cape Race (Aut), CA	all-time snowfall	55.6 cm (21.9 in)	14.2 cm (5.6 in)	17 years	55 of 100 (Notable)
30 December 1963	Quebrangulo, BR	daily rain	85.4 mm (3.4 in)	63.7 mm (2.5 in)	13 years	49 of 100 (Notable)
30 December 1963	Ft Pierce, US	daily rain	47.2 mm (1.9 in)	32.5 mm (1.3 in)	48 years	46 of 100 (Notable)
30 December 1963	Snyder, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	52 years	45 of 100 (Notable)
30 December 1963	Allardt, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	34 years	43 of 100 (Notable)
30 December 1963	Tingha Post Office, AU	daily rain	46.5 mm (1.8 in)	32.3 mm (1.3 in)	37 years	41 of 100 (Notable)
30 December 1963	Riacho de Santana, BR	daily rain	86.3 mm (3.4 in)	56.0 mm (2.2 in)	14 years	41 of 100 (Notable)
30 December 1963	Snyder, US	all-time snow depth	12.7 cm (5.0 in)	2.5 cm (1.0 in)	48 years	41 of 100 (Notable)
30 December 1963	Homestead Exp STN, US	daily rain	32.3 mm (1.3 in)	22.1 mm (0.9 in)	24 years	39 of 100 (Notable)
30 December 1963	Harrisville, US	monthly low min	-25.6 C (-14.1 F)	1.2 C (2.2 F)	69 years	39 of 100 (Notable)
30 December 1963	Itapeim, BR	daily rain	25.1 mm (1.0 in)	24.0 mm (0.9 in)	22 years	36 of 100 (Notable)
30 December 1963	Barraba (Neranghi), AU	daily rain	40.4 mm (1.6 in)	25.9 mm (1.0 in)	22 years	34 of 100 (Routine)
30 December 1963	Pedro II, BR	daily rain	53.2 mm (2.1 in)	25.0 mm (1.0 in)	46 years	34 of 100 (Routine)
30 December 1963	Santa Cruz, US	daily high max	26.7 C (80.1 F)	2.8 C (5.0 F)	65 years	34 of 100 (Routine)
30 December 1963	Hemlock, US	daily snow depth	25.4 cm (10.0 in)	10.2 cm (4.0 in)	44 years	34 of 100 (Routine)
30 December 1963	Miami, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	57 years	34 of 100 (Routine)
30 December 1963	Spur, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	52 years	34 of 100 (Routine)
30 December 1963	Santa Paula, US	daily high min	17.2 C (63.0 F)	2.8 C (5.0 F)	61 years	32 of 100 (Routine)

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

1799 to 1963

Records set or tied on this calendar date in each year from 1799 to 1963. 1963 had 567 records.

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

Records on 12-30 in each year
Year	Records
1799	2
1835	1
1850	1
1853	1
1856	1
1859	1
1863	1
1868	1
1870	4
1872	3
1874	2
1875	2
1876	3
1878	1
1880	5
1881	3
1882	3
1884	2
1888	2
1889	2
1890	7
1891	1
1892	1
1893	3
1895	6
1896	3
1897	7
1898	6
1899	3
1900	5
1901	8
1902	2
1903	8
1904	12
1905	10
1906	11
1907	26
1908	17
1909	13
1910	18
1911	20
1912	37
1913	32
1914	47
1915	62
1916	45
1917	217
1918	25
1919	82
1920	84
1921	111
1922	227
1923	223
1924	65
1925	184
1926	63
1927	290
1928	31
1929	382
1930	71
1931	509
1932	407
1933	279
1934	206
1935	202
1936	931
1937	234
1938	208
1939	237
1940	397
1941	149
1942	584
1943	165
1944	137
1945	251
1946	584
1947	317
1948	760
1949	206
1950	479
1951	955
1952	334
1953	399
1954	538
1955	254
1956	556
1957	443
1958	525
1959	216
1960	345
1961	389
1962	671
1963	567
1964	537
1965	1,122
1966	403
1967	760
1968	1,391
1969	817
1970	571
1971	1,122
1972	1,052
1973	1,262
1974	564
1975	703
1976	981
1977	795
1978	1,930
1979	427
1980	1,560
1981	684
1982	630
1983	2,765
1984	1,834
1985	568
1986	852
1987	1,270
1988	755
1989	528
1990	3,065
1991	525
1992	1,210
1993	865
1994	642
1995	1,455
1996	1,620
1997	1,384
1998	801
1999	838
2000	1,377
2001	651
2002	1,034
2003	661
2004	974
2005	928
2006	1,779
2007	748
2008	653
2009	933
2010	1,200
2011	782
2012	676
2013	642
2014	660
2015	820
2016	706
2017	1,324
2018	284
2019	1,131
2020	604
2021	1,455
2022	909
2023	726
2024	638
2025	325

Download the Data

Data for records on 1963-12-30: 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 50	437
50 to 100	15
100 to 150	4
150 to 200	2
200 to 250	1