Weather Records on 20 December 1946

327 weather records were set or tied worldwide on 20 December 1946. Highest significance: Honomanu 450, US.

Key Facts for 20 December 1946

On 20 December 1946, 327 weather records were set or tied at long-record stations worldwide.
72 were record highs and 43 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 321 daily.
Honomanu 450 set a daily record precipitation of 384.6 mm (15.1 in) on 20 December 1946.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 468 records.

Record Map

327 stations

327 station records on 20 December 1946 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 1946: highest significance records shown on the map
Station	Country	Type	Value	Significance
Honomanu 450	United States	Record daily precipitation	384.6 mm (15.1 in)	55 of 100 (Notable)
Kukuihaele Hic 199	United States	Record daily precipitation	138.4 mm (5.4 in)	53 of 100 (Notable)
Yuleba Garden St	Australia	Record daily precipitation	56.4 mm (2.2 in)	46 of 100 (Notable)
Kukuihaele Mill 206	United States	Record daily precipitation	106.7 mm (4.2 in)	45 of 100 (Notable)
Willard 4 SW	United States	Record daily precipitation	48.5 mm (1.9 in)	44 of 100 (Notable)
Jena Sternwarte	Germany	Record low maximum temperature	-13.7 C (7.3 F)	43 of 100 (Notable)
Haina 214	United States	Record daily precipitation	105.4 mm (4.1 in)	41 of 100 (Notable)
Albacete Los Llanos	Spain	Record low minimum temperature	-16.5 C (2.3 F)	39 of 100 (Notable)
Surat	Australia	Record daily precipitation	67.1 mm (2.6 in)	38 of 100 (Notable)
Honokane 181.1	United States	Record daily precipitation	214.9 mm (8.5 in)	37 of 100 (Notable)
Ridgetown	Canada	Record daily snowfall	19.1 cm (7.5 in)	35 of 100 (Notable)
Augsburg (Sankt Stephan)	Germany	Record low minimum temperature	-16.9 C (1.6 F)	35 of 100 (Notable)
Somerville 4 NW	United States	Record daily snowfall	5.3 cm (2.1 in)	35 of 100 (Notable)
Wilmington Wb City	United States	Record daily precipitation	45.0 mm (1.8 in)	34 of 100 (Routine)
New Cumberland L/D	United States	Record daily snowfall	12.7 cm (5.0 in)	34 of 100 (Routine)
Hobart (Ellerslie Road)	Australia	Record high maximum temperature	34.9 C (94.8 F)	33 of 100 (Routine)
Husum	Germany	Record low minimum temperature	-17.4 C (0.7 F)	33 of 100 (Routine)
Boa Viagem	Brazil	Record daily precipitation	26.7 mm (1.1 in)	32 of 100 (Routine)
Paterson	United States	Record daily snowfall	5.1 cm (2.0 in)	32 of 100 (Routine)
Rimini 2 SSW	United States	Record daily precipitation	43.7 mm (1.7 in)	32 of 100 (Routine)
Papaikou 144.1	United States	Record daily precipitation	116.1 mm (4.6 in)	32 of 100 (Routine)
Edinburg	United States	Record daily precipitation	49.8 mm (2.0 in)	31 of 100 (Routine)
Haleakala Rch 432	United States	Record daily precipitation	136.9 mm (5.4 in)	31 of 100 (Routine)
Flagstaff (Tnk)	South Africa	Record daily precipitation	33.5 mm (1.3 in)	30 of 100 (Routine)
Bergplaats	South Africa	Record daily precipitation	43.2 mm (1.7 in)	30 of 100 (Routine)
Middleboro	United States	Record daily precipitation	45.0 mm (1.8 in)	30 of 100 (Routine)
Ganca	Azerbaijan	Record low maximum temperature	-3.6 C (25.5 F)	29 of 100 (Routine)
Bower	Australia	Record daily precipitation	39.4 mm (1.6 in)	29 of 100 (Routine)
Galway	Ireland	Record low maximum temperature	-0.6 C (30.9 F)	29 of 100 (Routine)
Salamonia	United States	Record daily snowfall	7.6 cm (3.0 in)	29 of 100 (Routine)
Tiffin	United States	Record daily snowfall	11.9 cm (4.7 in)	28 of 100 (Routine)
Morven Post Office	Australia	Record daily precipitation	44.5 mm (1.8 in)	27 of 100 (Routine)
Leamington	Canada	Record daily snowfall	20.3 cm (8.0 in)	27 of 100 (Routine)
Nominingue	Canada	Record daily snowfall	20.3 cm (8.0 in)	27 of 100 (Routine)
Vlaklaagte	South Africa	Record daily precipitation	40.6 mm (1.6 in)	27 of 100 (Routine)
Robeline	United States	Record daily precipitation	54.6 mm (2.1 in)	27 of 100 (Routine)
Port Gibson 1 NE	United States	Record daily precipitation	55.6 mm (2.2 in)	27 of 100 (Routine)
Utica	United States	Record daily precipitation	43.7 mm (1.7 in)	27 of 100 (Routine)
Blacksburg	United States	Record daily precipitation	33.0 mm (1.3 in)	27 of 100 (Routine)
Lexington	United States	Record daily precipitation	31.8 mm (1.3 in)	27 of 100 (Routine)
Loudon 1 E	United States	Record daily precipitation	39.1 mm (1.5 in)	26 of 100 (Routine)
Roanoke	United States	Record daily precipitation	33.3 mm (1.3 in)	26 of 100 (Routine)
Barkerville	Canada	Record high maximum temperature	6.1 C (43.0 F)	25 of 100 (Routine)
Honomu Mauka 138	United States	Record daily precipitation	177.8 mm (7.0 in)	25 of 100 (Routine)
Kula Erehwon 328	United States	Record daily precipitation	41.9 mm (1.6 in)	25 of 100 (Routine)
Angellala Downs Homestead	Australia	Record daily precipitation	31.5 mm (1.2 in)	24 of 100 (Routine)
Wallaceburg	Canada	Record daily snowfall	12.7 cm (5.0 in)	24 of 100 (Routine)
Sodankyla AWS	Finland	Record high minimum temperature	2.6 C (36.7 F)	24 of 100 (Routine)
Nord-Rana	Norway	Record daily precipitation	93.0 mm (3.7 in)	24 of 100 (Routine)
Feodosiia	Ukraine	Record low minimum temperature	-13.6 C (7.5 F)	24 of 100 (Routine)
Philadelphia City	United States	Record daily precipitation	35.3 mm (1.4 in)	24 of 100 (Routine)
Ganca	Azerbaijan	Record low minimum temperature	-10.5 C (13.1 F)	23 of 100 (Routine)
Uil	Kazakhstan	Record low minimum temperature	-33.3 C (-27.9 F)	23 of 100 (Routine)
Barkestad	Norway	Record daily precipitation	36.7 mm (1.4 in)	23 of 100 (Routine)
Haparanda	Sweden	Record high maximum temperature	5.0 C (41.0 F)	23 of 100 (Routine)
Helena 1 S	United States	Record daily precipitation	58.4 mm (2.3 in)	23 of 100 (Routine)
Hickory 1 E	United States	Record daily precipitation	61.7 mm (2.4 in)	23 of 100 (Routine)
Paauhau 217	United States	Record daily precipitation	67.3 mm (2.6 in)	23 of 100 (Routine)
Knoxville AP	United States	Record daily precipitation	40.1 mm (1.6 in)	23 of 100 (Routine)
Salgueiro	Brazil	Record daily precipitation	33.0 mm (1.3 in)	22 of 100 (Routine)

Counts by Type and Timescale

327 records

Records set or tied on 20 December 1946 by type: Highest daily maximum 25, Lowest daily maximum 22, Highest daily minimum 47, Lowest daily minimum 21, Heaviest daily rainfall 174, Heaviest daily snowfall 37, Deepest snow cover 1.

Records on 20 December 1946 by type
Record type	Records
Highest daily maximum	25
Lowest daily maximum	22
Highest daily minimum	47
Lowest daily minimum	21
Heaviest daily rainfall	174
Heaviest daily snowfall	37
Deepest snow cover	1

Records on 20 December 1946 by timescale: all-time 0, monthly 6, daily 321.

How Much Records Were Beaten By

294 broken records

Margins by which the 294 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 282.5. Ties are not counted.

Top 20 by Significance

20 December 1946

Top 20 records on 20 December 1946 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 1946	Honomanu 450, US	daily rain	384.6 mm (15.1 in)	282.5 mm (11.1 in)	37 years	55 of 100 (Notable)
20 December 1946	Kukuihaele Hic 199, US	daily rain	138.4 mm (5.4 in)	101.3 mm (4.0 in)	31 years	53 of 100 (Notable)
20 December 1946	Yuleba Garden St, AU	daily rain	56.4 mm (2.2 in)	36.1 mm (1.4 in)	32 years	46 of 100 (Notable)
20 December 1946	Kukuihaele Mill 206, US	daily rain	106.7 mm (4.2 in)	65.0 mm (2.6 in)	32 years	45 of 100 (Notable)
20 December 1946	Willard 4 SW, US	daily rain	48.5 mm (1.9 in)	39.4 mm (1.6 in)	24 years	44 of 100 (Notable)
20 December 1946	Jena Sternwarte, DE	daily low max	-13.7 C (7.3 F)	3.2 C (5.8 F)	90 years	43 of 100 (Notable)
20 December 1946	Haina 214, US	daily rain	105.4 mm (4.1 in)	74.2 mm (2.9 in)	11 years	41 of 100 (Notable)
20 December 1946	Albacete Los Llanos, ES	monthly low min	-16.5 C (2.3 F)	5.0 C (9.0 F)	45 years	39 of 100 (Notable)
20 December 1946	Surat, AU	daily rain	67.1 mm (2.6 in)	47.3 mm (1.9 in)	16 years	38 of 100 (Notable)
20 December 1946	Honokane 181.1, US	daily rain	214.9 mm (8.5 in)	96.3 mm (3.8 in)	15 years	37 of 100 (Notable)
20 December 1946	Ridgetown, CA	daily snowfall	19.1 cm (7.5 in)	11.5 cm (4.5 in)	12 years	35 of 100 (Notable)
20 December 1946	Augsburg (Sankt Stephan), DE	daily low min	-16.9 C (1.6 F)	4.9 C (8.8 F)	66 years	35 of 100 (Notable)
20 December 1946	Somerville 4 NW, US	daily snowfall	5.3 cm (2.1 in)	5.3 cm (2.1 in)	67 years	35 of 100 (Notable)
20 December 1946	Wilmington Wb City, US	daily rain	45.0 mm (1.8 in)	17.3 mm (0.7 in)	40 years	34 of 100 (Routine)
20 December 1946	New Cumberland L/D, US	daily snowfall	12.7 cm (5.0 in)	9.4 cm (3.7 in)	9 years	34 of 100 (Routine)
20 December 1946	Hobart (Ellerslie Road), AU	daily high max	34.9 C (94.8 F)	5.5 C (9.9 F)	51 years	33 of 100 (Routine)
20 December 1946	Husum, DE	monthly low min	-17.4 C (0.7 F)	1.9 C (3.4 F)	47 years	33 of 100 (Routine)
20 December 1946	Boa Viagem, BR	daily rain	26.7 mm (1.1 in)	26.7 mm (1.1 in)	36 years	32 of 100 (Routine)
20 December 1946	Paterson, US	daily snowfall	5.1 cm (2.0 in)	1.3 cm (0.5 in)	78 years	32 of 100 (Routine)
20 December 1946	Rimini 2 SSW, US	daily rain	43.7 mm (1.7 in)	28.5 mm (1.1 in)	24 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

1793 to 1946

Records set or tied on this calendar date in each year from 1793 to 1946. 1946 had 327 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 1946-12-20: 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	275
50 to 100	15
100 to 150	3
150 to 200	0
200 to 250	0
250 to 300	1