Weather Records on 20 December 1944

340 weather records were set or tied worldwide on 20 December 1944. Highest significance: Mundallio, AU.

Key Facts for 20 December 1944

On 20 December 1944, 340 weather records were set or tied at long-record stations worldwide.
62 were record highs and 50 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 337 daily.
Mundallio set a daily record precipitation of 27.9 mm (1.1 in) on 20 December 1944.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 468 records.

Record Map

340 stations

340 station records on 20 December 1944 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 1944: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mundallio	Australia	Record daily precipitation	27.9 mm (1.1 in)	61 of 100 (Major)
Ucolta Post Office	Australia	Record daily precipitation	33.3 mm (1.3 in)	48 of 100 (Notable)
Woomera (South Gap Station)	Australia	Record daily precipitation	25.4 mm (1.0 in)	47 of 100 (Notable)
Burra (Poonunda)	Australia	Record daily precipitation	30.5 mm (1.2 in)	47 of 100 (Notable)
Augusta	United States	Record daily snowfall	15.2 cm (6.0 in)	44 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record daily precipitation	43.9 mm (1.7 in)	42 of 100 (Notable)
Claysville 3 W	United States	Record snow depth	27.9 cm (11.0 in)	42 of 100 (Notable)
Woomera (Mahanewo)	Australia	Record daily precipitation	26.7 mm (1.1 in)	41 of 100 (Notable)
Orroroo (Yalpara)	Australia	Record daily precipitation	30.0 mm (1.2 in)	38 of 100 (Notable)
Payette	United States	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Collingwood	Canada	Record daily snowfall	20.3 cm (8.0 in)	37 of 100 (Notable)
Mundoora	Australia	Record daily precipitation	26.7 mm (1.1 in)	36 of 100 (Notable)
Longreach Post Office	Australia	Record daily precipitation	48.0 mm (1.9 in)	35 of 100 (Notable)
Spalding (Yakilo)	Australia	Record daily precipitation	29.0 mm (1.1 in)	32 of 100 (Routine)
Big Timber	United States	Record daily snowfall	12.7 cm (5.0 in)	32 of 100 (Routine)
Burdekin Shire Council	Australia	Record daily precipitation	73.7 mm (2.9 in)	31 of 100 (Routine)
Rapelje	United States	Record daily snowfall	20.3 cm (8.0 in)	30 of 100 (Routine)
Carrieton (Yanyarrie)	Australia	Record daily precipitation	32.0 mm (1.3 in)	29 of 100 (Routine)
Home Hill Fifteen A St	Australia	Record daily precipitation	71.1 mm (2.8 in)	26 of 100 (Routine)
Emerson	Canada	Record low maximum temperature	-17.8 C (0.0 F)	25 of 100 (Routine)
Hollister 1 SW	United States	Record high maximum temperature	23.3 C (73.9 F)	25 of 100 (Routine)
Mildred	United States	Record daily snowfall	7.6 cm (3.0 in)	25 of 100 (Routine)
Cadiz	United States	Record snow depth	20.3 cm (8.0 in)	25 of 100 (Routine)
Barraba Post Office	Australia	Record daily precipitation	27.4 mm (1.1 in)	23 of 100 (Routine)
Kellogg	United States	Record daily snowfall	8.9 cm (3.5 in)	23 of 100 (Routine)
Choteau	United States	Record daily snowfall	7.6 cm (3.0 in)	23 of 100 (Routine)
Orman Dam	United States	Record daily snowfall	7.6 cm (3.0 in)	23 of 100 (Routine)
Boynedale	Australia	Record daily precipitation	85.1 mm (3.4 in)	22 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record high minimum temperature	21.7 C (71.1 F)	22 of 100 (Routine)
Worland	United States	Record daily snowfall	7.6 cm (3.0 in)	22 of 100 (Routine)
Melrose (Para Gums)	Australia	Record daily precipitation	37.1 mm (1.5 in)	21 of 100 (Routine)
Reid River Railway Station	Australia	Record daily precipitation	37.6 mm (1.5 in)	21 of 100 (Routine)
Mt Carroll	United States	Record snow depth	30.5 cm (12.0 in)	21 of 100 (Routine)
Billings Wtp	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Yardea	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Quorn (Round Hill)	Australia	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)
Augusta	United States	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Bookaloo	Australia	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Hallett (Ulooloo Railway Sidin	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Wirrulla (Petina)	Australia	Record daily precipitation	9.7 mm (0.38 in)	20 of 100 (Routine)
Carrieton (Eurelia)	Australia	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Wilmington	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Sedan (Sandleton)	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Booleroo Centre	Australia	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Koonamore	Australia	Record daily precipitation	11.9 mm (0.5 in)	20 of 100 (Routine)
Katyil	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Irwin 2 SE	United States	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Carrieton	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Mutooroo	Australia	Record daily precipitation	9.9 mm (0.39 in)	20 of 100 (Routine)
Saint Ignatius	United States	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Woomera (Oakden Hills)	Australia	Record daily precipitation	23.9 mm (0.9 in)	20 of 100 (Routine)
Port Augusta (Nectar Brook)	Australia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Whyte Yarcowie	Australia	Record daily precipitation	5.6 mm (0.22 in)	20 of 100 (Routine)
Big Timber	United States	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Hawker	Australia	Record daily precipitation	6.6 mm (0.26 in)	20 of 100 (Routine)
Cheboygan	United States	Record daily precipitation	9.9 mm (0.39 in)	20 of 100 (Routine)
Cradock (Kanyaka)	Australia	Record daily precipitation	9.7 mm (0.38 in)	20 of 100 (Routine)
Johnburgh Post Office	Australia	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Wirrabara	Australia	Record daily precipitation	6.9 mm (0.27 in)	20 of 100 (Routine)

Counts by Type and Timescale

340 records

Records set or tied on 20 December 1944 by type: Highest daily maximum 35, Lowest daily maximum 12, Highest daily minimum 27, Lowest daily minimum 38, Heaviest daily rainfall 175, Heaviest daily snowfall 38, Deepest snow cover 15.

Records on 20 December 1944 by type
Record type	Records
Highest daily maximum	35
Lowest daily maximum	12
Highest daily minimum	27
Lowest daily minimum	38
Heaviest daily rainfall	175
Heaviest daily snowfall	38
Deepest snow cover	15

Records on 20 December 1944 by timescale: all-time 0, monthly 3, daily 337.

How Much Records Were Beaten By

278 broken records

Margins by which the 278 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

20 December 1944

Top 20 records on 20 December 1944 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 1944	Mundallio, AU	daily rain	27.9 mm (1.1 in)	27.9 mm (1.1 in)	55 years	61 of 100 (Major)
20 December 1944	Ucolta Post Office, AU	daily rain	33.3 mm (1.3 in)	33.3 mm (1.3 in)	37 years	48 of 100 (Notable)
20 December 1944	Woomera (South Gap Station), AU	daily rain	25.4 mm (1.0 in)	25.1 mm (1.0 in)	49 years	47 of 100 (Notable)
20 December 1944	Burra (Poonunda), AU	daily rain	30.5 mm (1.2 in)	22.1 mm (0.9 in)	58 years	47 of 100 (Notable)
20 December 1944	Augusta, US	daily snowfall	15.2 cm (6.0 in)	13.9 cm (5.5 in)	20 years	44 of 100 (Notable)
20 December 1944	Aibonito 1 S, PR	daily rain	43.9 mm (1.7 in)	33.7 mm (1.3 in)	12 years	42 of 100 (Notable)
20 December 1944	Claysville 3 W, US	daily snow depth	27.9 cm (11.0 in)	15.2 cm (6.0 in)	25 years	42 of 100 (Notable)
20 December 1944	Woomera (Mahanewo), AU	daily rain	26.7 mm (1.1 in)	24.2 mm (1.0 in)	23 years	41 of 100 (Notable)
20 December 1944	Orroroo (Yalpara), AU	daily rain	30.0 mm (1.2 in)	30.0 mm (1.2 in)	37 years	38 of 100 (Notable)
20 December 1944	Payette, US	daily snowfall	12.7 cm (5.0 in)	10.2 cm (4.0 in)	37 years	38 of 100 (Notable)
20 December 1944	Collingwood, CA	daily snowfall	20.3 cm (8.0 in)	12.7 cm (5.0 in)	30 years	37 of 100 (Notable)
20 December 1944	Mundoora, AU	daily rain	26.7 mm (1.1 in)	25.9 mm (1.0 in)	11 years	36 of 100 (Notable)
20 December 1944	Longreach Post Office, AU	daily rain	48.0 mm (1.9 in)	32.0 mm (1.3 in)	31 years	35 of 100 (Notable)
20 December 1944	Spalding (Yakilo), AU	daily rain	29.0 mm (1.1 in)	17.6 mm (0.7 in)	23 years	32 of 100 (Routine)
20 December 1944	Big Timber, US	daily snowfall	12.7 cm (5.0 in)	6.3 cm (2.5 in)	48 years	32 of 100 (Routine)
20 December 1944	Burdekin Shire Council, AU	daily rain	73.7 mm (2.9 in)	41.7 mm (1.6 in)	37 years	31 of 100 (Routine)
20 December 1944	Rapelje, US	daily snowfall	20.3 cm (8.0 in)	7.6 cm (3.0 in)	28 years	30 of 100 (Routine)
20 December 1944	Carrieton (Yanyarrie), AU	daily rain	32.0 mm (1.3 in)	16.0 mm (0.6 in)	36 years	29 of 100 (Routine)
20 December 1944	Home Hill Fifteen A St, AU	daily rain	71.1 mm (2.8 in)	52.6 mm (2.1 in)	31 years	26 of 100 (Routine)
20 December 1944	Emerson, CA	daily low max	-17.8 C (0.0 F)	3.9 C (7.0 F)	46 years	25 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 1944

Records set or tied on this calendar date in each year from 1793 to 1944. 1944 had 340 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 1944-12-20: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 50	258
50 to 100	14
100 to 150	4
150 to 200	1
200 to 250	0
250 to 300	1