Weather Records on 21 December 1943

148 weather records were set or tied worldwide on 21 December 1943. Highest significance: Vertentes, BR.

Key Facts for 21 December 1943

On 21 December 1943, 148 weather records were set or tied at long-record stations worldwide.
53 were record highs and 27 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 145 daily.
Vertentes set a monthly record daily precipitation of 78.5 mm (3.1 in) on 21 December 1943.
Across 158 earlier years (1793 to 2025) the same calendar date averaged 491 records.

Record Map

148 stations

148 station records on 21 December 1943 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 December 1943: highest significance records shown on the map
Station	Country	Type	Value	Significance
Vertentes	Brazil	Record daily precipitation	78.5 mm (3.1 in)	56 of 100 (Notable)
Surubim	Brazil	Record daily precipitation	83.6 mm (3.3 in)	53 of 100 (Notable)
Canguaretama	Brazil	Record daily precipitation	43.5 mm (1.7 in)	52 of 100 (Notable)
Mamanguape	Brazil	Record daily precipitation	61.5 mm (2.4 in)	46 of 100 (Notable)
Santa Maria da Boa Vista	Brazil	Record daily precipitation	67.0 mm (2.6 in)	44 of 100 (Notable)
Independence	United States	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Martins	Brazil	Record daily precipitation	50.0 mm (2.0 in)	43 of 100 (Notable)
Sao Miguel	Brazil	Record daily precipitation	30.0 mm (1.2 in)	34 of 100 (Routine)
Brome	Canada	Record daily snowfall	15.2 cm (6.0 in)	33 of 100 (Routine)
Sao Luiz Do Curu	Brazil	Record daily precipitation	27.0 mm (1.1 in)	32 of 100 (Routine)
Curaca	Brazil	Record daily precipitation	35.0 mm (1.4 in)	32 of 100 (Routine)
Pembroke Eddy Match	Canada	Record daily snowfall	19.1 cm (7.5 in)	30 of 100 (Routine)
Emerson	Canada	Record low maximum temperature	-17.8 C (0.0 F)	28 of 100 (Routine)
Burdekin Shire Council	Australia	Record low minimum temperature	14.4 C (57.9 F)	26 of 100 (Routine)
Collingwood	Canada	Record daily snowfall	20.3 cm (8.0 in)	25 of 100 (Routine)
Mundo Novo	Brazil	Record daily precipitation	30.0 mm (1.2 in)	23 of 100 (Routine)
Kulgam	India	Record daily precipitation	71.1 mm (2.8 in)	23 of 100 (Routine)
Ennore Obsy	India	Record daily precipitation	50.8 mm (2.0 in)	23 of 100 (Routine)
Independence	United States	Record daily snowfall	7.6 cm (3.0 in)	23 of 100 (Routine)
Wofford Hts Kernville	United States	Record daily precipitation	29.2 mm (1.1 in)	22 of 100 (Routine)
Holy Cross	United States	Record low minimum temperature	-41.7 C (-43.1 F)	22 of 100 (Routine)
Portage la Prairie	Canada	Record low maximum temperature	-15.6 C (3.9 F)	21 of 100 (Routine)
Kola-In-Murman	Russia	Record daily precipitation	8.6 mm (0.34 in)	20 of 100 (Routine)
Pembroke Eddy Match	Canada	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Horton	United States	Record snow depth	5.1 cm (2.0 in)	20 of 100 (Routine)
Carson City	United States	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
McGill	United States	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Collingwood	Canada	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Kingman	United States	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Yerevan	Armenia	Record high minimum temperature	1.1 C (34.0 F)	20 of 100 (Routine)
Vanur	India	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Bushy Vales, Margate	South Africa	Record daily precipitation	40.9 mm (1.6 in)	20 of 100 (Routine)
Coldwater	Canada	Record low minimum temperature	-27.8 C (-18.0 F)	19 of 100 (Routine)
Bradford	United Kingdom	Record daily precipitation	15.1 mm (0.6 in)	19 of 100 (Routine)
Manhattan	United States	Record snow depth	2.5 cm (1.0 in)	19 of 100 (Routine)
Las Vegas	United States	Record daily precipitation	14.0 mm (0.6 in)	19 of 100 (Routine)
Smith 1 N	United States	Record daily precipitation	7.6 mm (0.30 in)	19 of 100 (Routine)
Cuddalore	India	Record daily precipitation	22.1 mm (0.9 in)	18 of 100 (Routine)
Parker	United States	Record high minimum temperature	11.1 C (52.0 F)	18 of 100 (Routine)
Bloomfield 3 SE	United States	Record daily precipitation	5.6 mm (0.22 in)	18 of 100 (Routine)
Areia Branca	Brazil	Record daily precipitation	22.8 mm (0.9 in)	17 of 100 (Routine)
Mount Forest	Canada	Record daily precipitation	13.5 mm (0.5 in)	17 of 100 (Routine)
Porterville	United States	Record daily precipitation	34.0 mm (1.3 in)	17 of 100 (Routine)
Portage la Prairie	Canada	Record low minimum temperature	-21.1 C (-6.0 F)	16 of 100 (Routine)
Nagappattinam	India	Record daily precipitation	32.8 mm (1.3 in)	16 of 100 (Routine)
Chernjaevo	Russia	Record daily precipitation	1.6 mm (0.06 in)	16 of 100 (Routine)
Crow Agency	United States	Record high maximum temperature	12.2 C (54.0 F)	16 of 100 (Routine)
Lahontan Dam	United States	Record daily precipitation	7.9 mm (0.31 in)	16 of 100 (Routine)
Black Lake	United States	Record snow depth	20.3 cm (8.0 in)	16 of 100 (Routine)
Mount Forest	Canada	Record daily snowfall	13.5 cm (5.3 in)	15 of 100 (Routine)
Green Rvr	United States	Record high minimum temperature	-1.1 C (30.0 F)	15 of 100 (Routine)
Mistassini Post	Canada	Record low maximum temperature	-28.9 C (-20.0 F)	14 of 100 (Routine)
Gudauri	Georgia	Record daily precipitation	21.5 mm (0.8 in)	14 of 100 (Routine)
Timovskoe	Russia	Record high minimum temperature	-7.7 C (18.1 F)	14 of 100 (Routine)
Yorba Linda	United States	Record high minimum temperature	12.2 C (54.0 F)	14 of 100 (Routine)
Wanakena Rngr School	United States	Record daily precipitation	10.9 mm (0.4 in)	14 of 100 (Routine)
Zion Np	United States	Record high minimum temperature	4.4 C (39.9 F)	14 of 100 (Routine)
Tingha Post Office	Australia	Record daily precipitation	41.1 mm (1.6 in)	13 of 100 (Routine)
Frogmore	Australia	Record daily precipitation	12.7 mm (0.5 in)	13 of 100 (Routine)
Mundau	Brazil	Record daily precipitation	10.8 mm (0.4 in)	13 of 100 (Routine)

Counts by Type and Timescale

148 records

Records set or tied on 21 December 1943 by type: Highest daily maximum 10, Lowest daily maximum 12, Highest daily minimum 43, Lowest daily minimum 15, Heaviest daily rainfall 58, Heaviest daily snowfall 6, Deepest snow cover 4.

Records on 21 December 1943 by type
Record type	Records
Highest daily maximum	10
Lowest daily maximum	12
Highest daily minimum	43
Lowest daily minimum	15
Heaviest daily rainfall	58
Heaviest daily snowfall	6
Deepest snow cover	4

Records on 21 December 1943 by timescale: all-time 0, monthly 3, daily 145.

How Much Records Were Beaten By

119 broken records

Margins by which the 119 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.

Top 20 by Significance

21 December 1943

Top 20 records on 21 December 1943 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 December 1943	Vertentes, BR	monthly rain	78.5 mm (3.1 in)	26.0 mm (1.0 in)	24 years	56 of 100 (Notable)
21 December 1943	Surubim, BR	monthly rain	83.6 mm (3.3 in)	62.4 mm (2.5 in)	1 year	53 of 100 (Notable)
21 December 1943	Canguaretama, BR	daily rain	43.5 mm (1.7 in)	37.4 mm (1.5 in)	32 years	52 of 100 (Notable)
21 December 1943	Mamanguape, BR	daily rain	61.5 mm (2.4 in)	36.3 mm (1.4 in)	22 years	46 of 100 (Notable)
21 December 1943	Santa Maria da Boa Vista, BR	daily rain	67.0 mm (2.6 in)	45.7 mm (1.8 in)	17 years	44 of 100 (Notable)
21 December 1943	Independence, US	daily rain	33.0 mm (1.3 in)	27.9 mm (1.1 in)	4 years	44 of 100 (Notable)
21 December 1943	Martins, BR	daily rain	50.0 mm (2.0 in)	50.0 mm (2.0 in)	32 years	43 of 100 (Notable)
21 December 1943	Sao Miguel, BR	daily rain	30.0 mm (1.2 in)	25.0 mm (1.0 in)	32 years	34 of 100 (Routine)
21 December 1943	Brome, CA	daily snowfall	15.2 cm (6.0 in)	5.0 cm (2.0 in)	64 years	33 of 100 (Routine)
21 December 1943	Sao Luiz Do Curu, BR	daily rain	27.0 mm (1.1 in)	22.8 mm (0.9 in)	1 year	32 of 100 (Routine)
21 December 1943	Curaca, BR	daily rain	35.0 mm (1.4 in)	30.8 mm (1.2 in)	17 years	32 of 100 (Routine)
21 December 1943	Pembroke Eddy Match, CA	daily snowfall	19.1 cm (7.5 in)	2.6 cm (1.0 in)	64 years	30 of 100 (Routine)
21 December 1943	Emerson, CA	daily low max	-17.8 C (0.0 F)	2.8 C (5.0 F)	64 years	28 of 100 (Routine)
21 December 1943	Burdekin Shire Council, AU	daily low min	14.4 C (57.9 F)	2.3 C (4.1 F)	38 years	26 of 100 (Routine)
21 December 1943	Collingwood, CA	daily snowfall	20.3 cm (8.0 in)	6.3 cm (2.5 in)	28 years	25 of 100 (Routine)
21 December 1943	Mundo Novo, BR	daily rain	30.0 mm (1.2 in)	16.5 mm (0.6 in)	25 years	23 of 100 (Routine)
21 December 1943	Kulgam, IN	monthly rain	71.1 mm (2.8 in)	7.3 mm (0.29 in)	14 years	23 of 100 (Routine)
21 December 1943	Ennore Obsy, IN	daily rain	50.8 mm (2.0 in)	22.9 mm (0.9 in)	38 years	23 of 100 (Routine)
21 December 1943	Independence, US	daily snowfall	7.6 cm (3.0 in)	7.3 cm (2.9 in)	33 years	23 of 100 (Routine)
21 December 1943	Wofford Hts Kernville, US	daily rain	29.2 mm (1.1 in)	12.2 mm (0.5 in)	21 years	22 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 1943

Records set or tied on this calendar date in each year from 1793 to 1943. 1943 had 148 records.

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

Records on 12-21 in each year
Year	Records
1793	1
1794	1
1799	1
1801	2
1808	3
1825	1
1828	1
1839	1
1846	1
1850	1
1855	7
1859	1
1860	1
1868	1
1870	1
1871	2
1874	2
1875	3
1876	1
1877	1
1878	1
1879	1
1880	1
1884	1
1886	3
1889	1
1890	4
1893	4
1894	1
1895	5
1896	3
1897	3
1898	1
1900	8
1901	15
1902	5
1903	25
1904	3
1905	15
1906	15
1907	17
1908	19
1909	20
1910	29
1911	36
1912	23
1913	11
1914	107
1915	43
1916	40
1917	18
1918	41
1919	57
1920	30
1921	104
1922	34
1923	323
1924	377
1925	120
1926	178
1927	147
1928	70
1929	156
1930	66
1931	556
1932	150
1933	581
1934	230
1935	398
1936	323
1937	189
1938	145
1939	140
1940	622
1941	651
1942	968
1943	148
1944	762
1945	396
1946	495
1947	700
1948	297
1949	1,281
1950	504
1951	1,061
1952	197
1953	256
1954	444
1955	888
1956	672
1957	846
1958	516
1959	272
1960	585
1961	254
1962	563
1963	1,137
1964	613
1965	247
1966	400
1967	1,923
1968	818
1969	828
1970	547
1971	680
1972	651
1973	1,292
1974	374
1975	548
1976	446
1977	470
1978	517
1979	558
1980	726
1981	1,476
1982	702
1983	3,324
1984	1,012
1985	979
1986	404
1987	775
1988	717
1989	3,203
1990	2,701
1991	1,125
1992	751
1993	967
1994	793
1995	878
1996	1,114
1997	810
1998	1,142
1999	851
2000	944
2001	650
2002	579
2003	1,103
2004	675
2005	606
2006	1,443
2007	946
2008	1,062
2009	1,097
2010	2,039
2011	653
2012	759
2013	1,029
2014	878
2015	1,173
2016	543
2017	459
2018	742
2019	755
2020	965
2021	323
2022	528
2023	1,170
2024	778
2025	1,100

Download the Data

Data for records on 1943-12-21: 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	90
10 to 20	9
20 to 30	8
30 to 40	4
40 to 50	1
50 to 60	3
60 to 70	2
70 to 80	2