Weather Records on 20 December 1963

875 weather records were set or tied worldwide on 20 December 1963. Highest significance: Midvale, US.

Key Facts for 20 December 1963

On 20 December 1963, 875 weather records were set or tied at long-record stations worldwide.
40 were record highs and 694 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 27 monthly and 846 daily.
Midvale set an all-time record daily precipitation of 66.0 mm (2.6 in) on 20 December 1963.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 465 records.

Record Map

875 stations

875 station records on 20 December 1963 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Midvale	United States	Record daily precipitation	66.0 mm (2.6 in)	70 of 100 (Major)
Cascavel	Brazil	Record daily precipitation	96.4 mm (3.8 in)	47 of 100 (Notable)
Farmland 5 NNW	United States	Record snow depth	15.2 cm (6.0 in)	40 of 100 (Notable)
Palmerville	Australia	Record daily precipitation	143.5 mm (5.6 in)	39 of 100 (Notable)
Kirchdorf/Poel	Germany	Record snow depth	11.0 cm (4.3 in)	37 of 100 (Notable)
Crawfordsville Pwr Plt	United States	Record low minimum temperature	-27.8 C (-18.0 F)	35 of 100 (Notable)
El Dorado Goodwin Fld	United States	Record daily snowfall	7.6 cm (3.0 in)	35 of 100 (Notable)
Alagoa Nova (Laranjeiras)	Brazil	Record daily precipitation	28.4 mm (1.1 in)	34 of 100 (Routine)
Fort Chipewyan	Canada	Record low maximum temperature	-30.0 C (-22.0 F)	34 of 100 (Routine)
Regensburg	Germany	Record low minimum temperature	-14.2 C (6.4 F)	34 of 100 (Routine)
Chatham Exp Fa	United States	Record daily snowfall	12.7 cm (5.0 in)	34 of 100 (Routine)
Jardim	Brazil	Record daily precipitation	31.2 mm (1.2 in)	33 of 100 (Routine)
Cambridge City 3 N	United States	Record low minimum temperature	-27.8 C (-18.0 F)	33 of 100 (Routine)
Cresco 1 NE	United States	Record low maximum temperature	-21.1 C (-6.0 F)	33 of 100 (Routine)
Holland Wtp	United States	Record snow depth	66.0 cm (26.0 in)	33 of 100 (Routine)
Fremont	United States	Record low maximum temperature	-14.4 C (6.1 F)	33 of 100 (Routine)
Fordyce	United States	Record low maximum temperature	-1.1 C (30.0 F)	32 of 100 (Routine)
Greensburg	United States	Record low minimum temperature	-20.6 C (-5.1 F)	32 of 100 (Routine)
Hot Springs 1 NNE	United States	Record low maximum temperature	-1.1 C (30.0 F)	31 of 100 (Routine)
Washington 2 ESE	United States	Record low minimum temperature	-12.8 C (9.0 F)	31 of 100 (Routine)
Albia 3 NNE	United States	Record low maximum temperature	-16.7 C (1.9 F)	31 of 100 (Routine)
Clinton #1	United States	Record low minimum temperature	-28.9 C (-20.0 F)	31 of 100 (Routine)
Toledo 3N	United States	Record low maximum temperature	-20.0 C (-4.0 F)	31 of 100 (Routine)
Ness City	United States	Record low maximum temperature	-9.4 C (15.1 F)	31 of 100 (Routine)
Cave Run Lake	United States	Record low minimum temperature	-21.7 C (-7.1 F)	31 of 100 (Routine)
Ouro Branco (Manairama)	Brazil	Record daily precipitation	33.4 mm (1.3 in)	30 of 100 (Routine)
Malvern	United States	Record low maximum temperature	-1.1 C (30.0 F)	30 of 100 (Routine)
Anderson 1 N	United States	Record low minimum temperature	-23.9 C (-11.0 F)	30 of 100 (Routine)
Columbus	United States	Record low minimum temperature	-23.9 C (-11.0 F)	30 of 100 (Routine)
Greensburg	United States	Record low maximum temperature	-14.4 C (6.1 F)	30 of 100 (Routine)
Shelbyville Sewage Plt	United States	Record low minimum temperature	-26.1 C (-15.0 F)	30 of 100 (Routine)
Clinton #1	United States	Record low maximum temperature	-18.3 C (-0.9 F)	30 of 100 (Routine)
Grundy Ctr	United States	Record low maximum temperature	-17.8 C (0.0 F)	30 of 100 (Routine)
Maquoketa	United States	Record low maximum temperature	-17.8 C (0.0 F)	30 of 100 (Routine)
Maysville Wwtp	United States	Record low minimum temperature	-21.1 C (-6.0 F)	30 of 100 (Routine)
Middlesboro Fire Dept	United States	Record low minimum temperature	-19.4 C (-2.9 F)	30 of 100 (Routine)
Caledonia	United States	Record low minimum temperature	-31.1 C (-24.0 F)	30 of 100 (Routine)
Defiance	United States	Record low maximum temperature	-13.3 C (8.1 F)	30 of 100 (Routine)
Defiance	United States	Record low minimum temperature	-22.8 C (-9.0 F)	30 of 100 (Routine)
Delaware	United States	Record low minimum temperature	-27.8 C (-18.0 F)	30 of 100 (Routine)
Kenton	United States	Record low minimum temperature	-22.8 C (-9.0 F)	30 of 100 (Routine)
Midvale	United States	Record daily snowfall	12.7 cm (5.0 in)	30 of 100 (Routine)
Beckley Va Hospital	United States	Record low minimum temperature	-20.0 C (-4.0 F)	30 of 100 (Routine)
Bens Run 1 SSE	United States	Record low minimum temperature	-21.7 C (-7.1 F)	30 of 100 (Routine)
Poretskoye	Russia	Record low minimum temperature	-33.3 C (-27.9 F)	29 of 100 (Routine)
Ottawa 4SW	United States	Record low minimum temperature	-25.0 C (-13.0 F)	29 of 100 (Routine)
Sycamore	United States	Record low minimum temperature	-28.3 C (-18.9 F)	29 of 100 (Routine)
Frankfort Disposal	United States	Record low minimum temperature	-27.2 C (-17.0 F)	29 of 100 (Routine)
Paoli	United States	Record low minimum temperature	-25.0 C (-13.0 F)	29 of 100 (Routine)
Richmond Wtr Wks	United States	Record low minimum temperature	-28.3 C (-18.9 F)	29 of 100 (Routine)
W Lafayette 6 NW	United States	Record low minimum temperature	-25.6 C (-14.1 F)	29 of 100 (Routine)
Indianola 1SW	United States	Record low maximum temperature	-15.0 C (5.0 F)	29 of 100 (Routine)
Kirksville	United States	Record low maximum temperature	-15.0 C (5.0 F)	29 of 100 (Routine)
Ogdensburg 4 NE	United States	Record snow depth	15.2 cm (6.0 in)	29 of 100 (Routine)
Lima Wwtp	United States	Record low minimum temperature	-23.3 C (-9.9 F)	29 of 100 (Routine)
Toledo Blade	United States	Record low maximum temperature	-11.7 C (10.9 F)	29 of 100 (Routine)
Purcell 2 SW	United States	Record low maximum temperature	-2.2 C (28.0 F)	29 of 100 (Routine)
Wisconsin Rapids	United States	Record low maximum temperature	-17.8 C (0.0 F)	29 of 100 (Routine)
El-Golea	Algeria	Record high minimum temperature	16.9 C (62.4 F)	28 of 100 (Routine)
Iffley Station	Australia	Record daily precipitation	79.0 mm (3.1 in)	28 of 100 (Routine)

Counts by Type and Timescale

875 records

Records set or tied on 20 December 1963 by type: Highest daily maximum 25, Lowest daily maximum 398, Highest daily minimum 15, Lowest daily minimum 296, Heaviest daily rainfall 81, Heaviest daily snowfall 32, Deepest snow cover 28.

Records on 20 December 1963 by type
Record type	Records
Highest daily maximum	25
Lowest daily maximum	398
Highest daily minimum	15
Lowest daily minimum	296
Heaviest daily rainfall	81
Heaviest daily snowfall	32
Deepest snow cover	28

Records on 20 December 1963 by timescale: all-time 2, monthly 27, daily 846.

How Much Records Were Beaten By

719 broken records

Margins by which the 719 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 177.0. Ties are not counted.

Top 20 by Significance

20 December 1963

Top 20 records on 20 December 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 1963	Midvale, US	all-time rain	66.0 mm (2.6 in)	20.0 mm (0.8 in)	19 years	70 of 100 (Major)
20 December 1963	Cascavel, BR	daily rain	96.4 mm (3.8 in)	55.4 mm (2.2 in)	16 years	47 of 100 (Notable)
20 December 1963	Farmland 5 NNW, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	61 years	40 of 100 (Notable)
20 December 1963	Palmerville, AU	monthly rain	143.5 mm (5.6 in)	25.1 mm (1.0 in)	30 years	39 of 100 (Notable)
20 December 1963	Kirchdorf/Poel, DE	daily snow depth	11.0 cm (4.3 in)	3.0 cm (1.2 in)	72 years	37 of 100 (Notable)
20 December 1963	Crawfordsville Pwr Plt, US	daily low min	-27.8 C (-18.0 F)	7.2 C (13.0 F)	61 years	35 of 100 (Notable)
20 December 1963	El Dorado Goodwin Fld, US	daily snowfall	7.6 cm (3.0 in)	6.3 cm (2.5 in)	53 years	35 of 100 (Notable)
20 December 1963	Alagoa Nova (Laranjeiras), BR	daily rain	28.4 mm (1.1 in)	17.2 mm (0.7 in)	21 years	34 of 100 (Routine)
20 December 1963	Fort Chipewyan, CA	daily low max	-30.0 C (-22.0 F)	3.3 C (5.9 F)	79 years	34 of 100 (Routine)
20 December 1963	Regensburg, DE	daily low min	-14.2 C (6.4 F)	0.9 C (1.6 F)	83 years	34 of 100 (Routine)
20 December 1963	Chatham Exp Fa, US	daily snowfall	12.7 cm (5.0 in)	5.1 cm (2.0 in)	58 years	34 of 100 (Routine)
20 December 1963	Jardim, BR	daily rain	31.2 mm (1.2 in)	20.2 mm (0.8 in)	52 years	33 of 100 (Routine)
20 December 1963	Cambridge City 3 N, US	daily low min	-27.8 C (-18.0 F)	5.6 C (10.1 F)	61 years	33 of 100 (Routine)
20 December 1963	Cresco 1 NE, US	daily low max	-21.1 C (-6.0 F)	5.5 C (9.9 F)	61 years	33 of 100 (Routine)
20 December 1963	Holland Wtp, US	daily snow depth	66.0 cm (26.0 in)	17.7 cm (7.0 in)	53 years	33 of 100 (Routine)
20 December 1963	Fremont, US	daily low max	-14.4 C (6.1 F)	5.5 C (9.9 F)	61 years	33 of 100 (Routine)
20 December 1963	Fordyce, US	daily low max	-1.1 C (30.0 F)	7.2 C (13.0 F)	48 years	32 of 100 (Routine)
20 December 1963	Greensburg, US	daily low min	-20.6 C (-5.1 F)	5.0 C (9.0 F)	61 years	32 of 100 (Routine)
20 December 1963	Hot Springs 1 NNE, US	daily low max	-1.1 C (30.0 F)	3.3 C (5.9 F)	65 years	31 of 100 (Routine)
20 December 1963	Washington 2 ESE, US	daily low min	-12.8 C (9.0 F)	3.4 C (6.1 F)	61 years	31 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

1793 to 1963

Records set or tied on this calendar date in each year from 1793 to 1963. 1963 had 875 records.

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

Records on 12-20 in each year
Year	Records
1793	1
1795	1
1804	1
1805	2
1808	1
1815	1
1828	1
1837	1
1846	1
1855	8
1858	1
1860	1
1866	1
1867	1
1868	1
1869	1
1871	2
1874	3
1875	1
1877	2
1878	1
1879	1
1880	1
1881	1
1882	1
1884	4
1885	1
1886	4
1889	4
1890	2
1891	2
1892	1
1894	2
1895	8
1896	1
1897	4
1898	2
1899	1
1900	7
1901	8
1902	14
1903	17
1904	9
1905	5
1906	5
1907	11
1908	5
1909	22
1910	17
1911	24
1912	27
1913	7
1914	43
1915	18
1916	45
1917	33
1918	18
1919	25
1920	22
1921	101
1922	88
1923	215
1924	332
1925	96
1926	163
1927	200
1928	93
1929	256
1930	67
1931	536
1932	170
1933	492
1934	265
1935	152
1936	416
1937	181
1938	240
1939	308
1940	965
1941	633
1942	817
1943	193
1944	340
1945	430
1946	327
1947	385
1948	345
1949	1,141
1950	758
1951	926
1952	394
1953	385
1954	416
1955	726
1956	471
1957	1,354
1958	382
1959	142
1960	354
1961	369
1962	475
1963	875
1964	499
1965	353
1966	555
1967	1,370
1968	482
1969	514
1970	518
1971	441
1972	448
1973	1,184
1974	328
1975	610
1976	382
1977	484
1978	910
1979	600
1980	667
1981	1,681
1982	712
1983	2,995
1984	1,411
1985	1,035
1986	321
1987	1,179
1988	760
1989	1,812
1990	1,885
1991	1,172
1992	1,134
1993	1,266
1994	813
1995	1,128
1996	1,448
1997	651
1998	1,110
1999	938
2000	1,150
2001	523
2002	943
2003	1,315
2004	836
2005	515
2006	1,387
2007	986
2008	1,356
2009	1,502
2010	2,055
2011	846
2012	1,131
2013	584
2014	524
2015	1,238
2016	603
2017	688
2018	592
2019	731
2020	554
2021	442
2022	567
2023	1,242
2024	897
2025	1,166

Download the Data

Data for records on 1963-12-20: 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 25	688
25 to 50	13
50 to 75	11
75 to 100	4
100 to 125	0
125 to 150	0
150 to 175	2
175 to 200	1