Weather Records on 21 December 1945

396 weather records were set or tied worldwide on 21 December 1945. Highest significance: Augustus Downs Station, AU.

Key Facts for 21 December 1945

On 21 December 1945, 396 weather records were set or tied at long-record stations worldwide.
21 were record highs and 156 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 393 daily.
Augustus Downs Station set a daily record precipitation of 128.8 mm (5.1 in) on 21 December 1945.
Across 158 earlier years (1793 to 2025) the same calendar date averaged 490 records.

Record Map

396 stations

396 station records on 21 December 1945 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 December 1945: highest significance records shown on the map
Station	Country	Type	Value	Significance
Augustus Downs Station	Australia	Record daily precipitation	128.8 mm (5.1 in)	53 of 100 (Notable)
Tamarack	United States	Record daily precipitation	71.6 mm (2.8 in)	50 of 100 (Notable)
Ozena	United States	Record daily precipitation	72.4 mm (2.9 in)	47 of 100 (Notable)
Rushville	United States	Record snow depth	25.4 cm (10.0 in)	46 of 100 (Notable)
Goderich	Canada	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Mount Florance	Australia	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)
Northport	United States	Record daily snowfall	19.1 cm (7.5 in)	41 of 100 (Notable)
Ottawa	United States	Record snow depth	22.9 cm (9.0 in)	39 of 100 (Notable)
Le Grand	United States	Record daily precipitation	43.2 mm (1.7 in)	36 of 100 (Notable)
Represa	United States	Record daily precipitation	54.1 mm (2.1 in)	36 of 100 (Notable)
Edgeley 3WNW	United States	Record snow depth	12.7 cm (5.0 in)	36 of 100 (Notable)
Goderich	Canada	Record daily snowfall	25.4 cm (10.0 in)	35 of 100 (Notable)
Long Beach Pub Svc	United States	Record daily precipitation	48.5 mm (1.9 in)	35 of 100 (Notable)
Paso Robles	United States	Record high minimum temperature	13.9 C (57.0 F)	34 of 100 (Routine)
Baltimore Customs House	United States	Record snow depth	25.4 cm (10.0 in)	34 of 100 (Routine)
Goderich Township	Canada	Record daily snowfall	33.0 cm (13.0 in)	32 of 100 (Routine)
Greenville	United States	Record snow depth	15.2 cm (6.0 in)	32 of 100 (Routine)
Pana	United States	Record snow depth	20.3 cm (8.0 in)	32 of 100 (Routine)
Bowman Dam	United States	Record daily precipitation	107.2 mm (4.2 in)	31 of 100 (Routine)
Taganrog (Lighthouse)	Russia	Record low minimum temperature	-22.0 C (-7.6 F)	30 of 100 (Routine)
Tahoe City	United States	Record daily precipitation	68.3 mm (2.7 in)	30 of 100 (Routine)
Prestwood Station	Australia	Record daily precipitation	56.9 mm (2.2 in)	29 of 100 (Routine)
Saint Ignatius	United States	Record daily snowfall	12.7 cm (5.0 in)	29 of 100 (Routine)
Minot Exp STN	United States	Record snow depth	17.8 cm (7.0 in)	29 of 100 (Routine)
Tiger Creek Ph	United States	Record daily precipitation	65.5 mm (2.6 in)	28 of 100 (Routine)
Griggsville	United States	Record snow depth	22.9 cm (9.0 in)	28 of 100 (Routine)
Priest Rvr Exp STN	United States	Record daily snowfall	14.0 cm (5.5 in)	27 of 100 (Routine)
Goderich Township	Canada	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Effingham 3SW	United States	Record snow depth	12.7 cm (5.0 in)	26 of 100 (Routine)
1 WSW Princeton	United States	Record snow depth	10.2 cm (4.0 in)	26 of 100 (Routine)
Blue Hill Coop	United States	Record snow depth	33.0 cm (13.0 in)	26 of 100 (Routine)
Fortine 1 N	United States	Record daily snowfall	17.8 cm (7.0 in)	26 of 100 (Routine)
Newark Liberty Intl AP	United States	Record snow depth	15.2 cm (6.0 in)	26 of 100 (Routine)
Tamarack	United States	Record daily snowfall	50.8 cm (20.0 in)	25 of 100 (Routine)
Iola	United States	Record snow depth	12.7 cm (5.0 in)	25 of 100 (Routine)
Rolla Missouri S&T	United States	Record snow depth	10.2 cm (4.0 in)	25 of 100 (Routine)
Eureka	United States	Record daily snowfall	5.1 cm (2.0 in)	25 of 100 (Routine)
Santa Barbara	United States	Record daily precipitation	61.0 mm (2.4 in)	24 of 100 (Routine)
Storrs	United States	Record snow depth	27.9 cm (11.0 in)	24 of 100 (Routine)
Los Angeles Downtown/Usc	United States	Record daily precipitation	39.9 mm (1.6 in)	24 of 100 (Routine)
Ny City Cntrl Park	United States	Record snow depth	20.3 cm (8.0 in)	24 of 100 (Routine)
Vauxhall	Canada	Record daily snowfall	7.6 cm (3.0 in)	23 of 100 (Routine)
Brandon Cda	Canada	Record low maximum temperature	-25.0 C (-13.0 F)	23 of 100 (Routine)
St Albans	Canada	Record low maximum temperature	-26.7 C (-16.1 F)	23 of 100 (Routine)
Electra P H	United States	Record daily precipitation	48.3 mm (1.9 in)	23 of 100 (Routine)
Santa Clara UNIV	United States	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Sandpoint Exp STN	United States	Record daily snowfall	15.2 cm (6.0 in)	23 of 100 (Routine)
Decatur Wtp	United States	Record snow depth	15.2 cm (6.0 in)	23 of 100 (Routine)
Hoopeston	United States	Record snow depth	17.8 cm (7.0 in)	23 of 100 (Routine)
Morrisonville 4 SE	United States	Record low minimum temperature	-22.2 C (-8.0 F)	23 of 100 (Routine)
Washington 1 W	United States	Record snow depth	10.2 cm (4.0 in)	23 of 100 (Routine)
Louisiana Starks Nurse	United States	Record snow depth	20.3 cm (8.0 in)	23 of 100 (Routine)
Flatwillow 4 ENE	United States	Record daily snowfall	12.7 cm (5.0 in)	23 of 100 (Routine)
Saint Ignatius	United States	Record snow depth	33.0 cm (13.0 in)	23 of 100 (Routine)
Williston Sloulin Fld	United States	Record snow depth	15.2 cm (6.0 in)	23 of 100 (Routine)
Rock Creek	Canada	Record daily snowfall	15.2 cm (6.0 in)	22 of 100 (Routine)
Calgary Int'l A	Canada	Record low maximum temperature	-21.7 C (-7.1 F)	22 of 100 (Routine)
Grenfell	Canada	Record low minimum temperature	-35.0 C (-31.0 F)	22 of 100 (Routine)
Quincy	United States	Record daily precipitation	53.8 mm (2.1 in)	22 of 100 (Routine)
Redding Fire STN 2	United States	Record daily precipitation	45.7 mm (1.8 in)	22 of 100 (Routine)

Counts by Type and Timescale

396 records

Records set or tied on 21 December 1945 by type: Highest daily maximum 4, Lowest daily maximum 55, Highest daily minimum 17, Lowest daily minimum 101, Heaviest daily rainfall 107, Heaviest daily snowfall 41, Deepest snow cover 71.

Records on 21 December 1945 by type
Record type	Records
Highest daily maximum	4
Lowest daily maximum	55
Highest daily minimum	17
Lowest daily minimum	101
Heaviest daily rainfall	107
Heaviest daily snowfall	41
Deepest snow cover	71

Records on 21 December 1945 by timescale: all-time 0, monthly 3, daily 393.

How Much Records Were Beaten By

334 broken records

Margins by which the 334 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

21 December 1945

Top 20 records on 21 December 1945 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 December 1945	Augustus Downs Station, AU	daily rain	128.8 mm (5.1 in)	103.4 mm (4.1 in)	36 years	53 of 100 (Notable)
21 December 1945	Tamarack, US	daily rain	71.6 mm (2.8 in)	59.4 mm (2.3 in)	32 years	50 of 100 (Notable)
21 December 1945	Ozena, US	daily rain	72.4 mm (2.9 in)	56.4 mm (2.2 in)	24 years	47 of 100 (Notable)
21 December 1945	Rushville, US	daily snow depth	25.4 cm (10.0 in)	17.8 cm (7.0 in)	11 years	46 of 100 (Notable)
21 December 1945	Goderich, CA	daily rain	25.4 mm (1.0 in)	13.2 mm (0.5 in)	62 years	45 of 100 (Notable)
21 December 1945	Mount Florance, AU	daily rain	33.0 mm (1.3 in)	30.7 mm (1.2 in)	14 years	43 of 100 (Notable)
21 December 1945	Northport, US	daily snowfall	19.1 cm (7.5 in)	11.5 cm (4.5 in)	45 years	41 of 100 (Notable)
21 December 1945	Ottawa, US	daily snow depth	22.9 cm (9.0 in)	22.9 cm (9.0 in)	44 years	39 of 100 (Notable)
21 December 1945	Le Grand, US	daily rain	43.2 mm (1.7 in)	23.1 mm (0.9 in)	32 years	36 of 100 (Notable)
21 December 1945	Represa, US	daily rain	54.1 mm (2.1 in)	31.2 mm (1.2 in)	24 years	36 of 100 (Notable)
21 December 1945	Edgeley 3WNW, US	daily snow depth	12.7 cm (5.0 in)	7.6 cm (3.0 in)	42 years	36 of 100 (Notable)
21 December 1945	Goderich, CA	daily snowfall	25.4 cm (10.0 in)	15.2 cm (6.0 in)	0 years	35 of 100 (Notable)
21 December 1945	Long Beach Pub Svc, US	daily rain	48.5 mm (1.9 in)	26.1 mm (1.0 in)	36 years	35 of 100 (Notable)
21 December 1945	Paso Robles, US	daily high min	13.9 C (57.0 F)	6.1 C (11.0 F)	50 years	34 of 100 (Routine)
21 December 1945	Baltimore Customs House, US	daily snow depth	25.4 cm (10.0 in)	10.2 cm (4.0 in)	40 years	34 of 100 (Routine)
21 December 1945	Goderich Township, CA	monthly snowfall	33.0 cm (13.0 in)	7.6 cm (3.0 in)	10 years	32 of 100 (Routine)
21 December 1945	Greenville, US	daily snow depth	15.2 cm (6.0 in)	10.1 cm (4.0 in)	28 years	32 of 100 (Routine)
21 December 1945	Pana, US	daily snow depth	20.3 cm (8.0 in)	10.1 cm (4.0 in)	36 years	32 of 100 (Routine)
21 December 1945	Bowman Dam, US	daily rain	107.2 mm (4.2 in)	38.4 mm (1.5 in)	44 years	31 of 100 (Routine)
21 December 1945	Taganrog (Lighthouse), RU	daily low min	-22.0 C (-7.6 F)	7.9 C (14.2 F)	40 years	30 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 1945

Records set or tied on this calendar date in each year from 1793 to 1945. 1945 had 396 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	1,099

Download the Data

Data for records on 1945-12-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 50	288
50 to 100	26
100 to 150	15
150 to 200	3
200 to 250	1
250 to 300	1