Weather Records on 20 December 1955

726 weather records were set or tied worldwide on 20 December 1955. Highest significance: Yeoval Post Office, AU.

Key Facts for 20 December 1955

On 20 December 1955, 726 weather records were set or tied at long-record stations worldwide.
212 were record highs and 164 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 12 monthly and 710 daily.
Yeoval Post Office set a daily record precipitation of 71.1 mm (2.8 in) on 20 December 1955.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 465 records.

Record Map

726 stations

726 station records on 20 December 1955 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 1955: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yeoval Post Office	Australia	Record daily precipitation	71.1 mm (2.8 in)	62 of 100 (Major)
Kapalama 773	United States	Record daily precipitation	190.5 mm (7.5 in)	60 of 100 (Major)
Aiea Fld 764A	United States	Record daily precipitation	155.2 mm (6.1 in)	59 of 100 (Notable)
Kahuku 912	United States	Record daily precipitation	76.5 mm (3.0 in)	57 of 100 (Notable)
Kualapuu 534	United States	Record daily precipitation	133.9 mm (5.3 in)	57 of 100 (Notable)
Koele 693	United States	Record daily precipitation	142.7 mm (5.6 in)	56 of 100 (Notable)
Smith 1 N	United States	Record daily precipitation	35.6 mm (1.4 in)	55 of 100 (Notable)
Olowalu 296.1	United States	Record daily precipitation	106.7 mm (4.2 in)	55 of 100 (Notable)
Kaanapali AP 453.1	United States	Record daily precipitation	109.2 mm (4.3 in)	52 of 100 (Notable)
Great Falls	Canada	Record daily snowfall	35.6 cm (14.0 in)	51 of 100 (Notable)
Ewa Plantation 741	United States	Record daily precipitation	94.0 mm (3.7 in)	50 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record daily precipitation	50.0 mm (2.0 in)	49 of 100 (Notable)
Downieville	United States	Record daily precipitation	144.8 mm (5.7 in)	48 of 100 (Notable)
Grove Farm 1021	United States	Record daily precipitation	106.4 mm (4.2 in)	48 of 100 (Notable)
Waiawa 943	United States	Record daily precipitation	86.9 mm (3.4 in)	48 of 100 (Notable)
Koloa 936	United States	Record daily precipitation	86.4 mm (3.4 in)	47 of 100 (Notable)
Sydney Botanic Gardens	Australia	Record daily precipitation	53.8 mm (2.1 in)	46 of 100 (Notable)
Nevada City	United States	Record daily precipitation	147.6 mm (5.8 in)	46 of 100 (Notable)
Aakukui 1007	United States	Record daily precipitation	101.6 mm (4.0 in)	46 of 100 (Notable)
Kipahulu 258	United States	Record daily precipitation	161.3 mm (6.4 in)	46 of 100 (Notable)
Pahala 21	United States	Record daily precipitation	110.5 mm (4.4 in)	46 of 100 (Notable)
Quincy	United States	Record daily precipitation	100.8 mm (4.0 in)	45 of 100 (Notable)
Sierraville Rs	United States	Record daily precipitation	75.4 mm (3.0 in)	45 of 100 (Notable)
Hillgrove (Hillview)	Australia	Record daily precipitation	48.5 mm (1.9 in)	44 of 100 (Notable)
E Lawai 934	United States	Record daily precipitation	91.9 mm (3.6 in)	44 of 100 (Notable)
Kula Sanatorium 267	United States	Record daily precipitation	228.9 mm (9.0 in)	44 of 100 (Notable)
Waimanalo 794	United States	Record daily precipitation	327.7 mm (12.9 in)	44 of 100 (Notable)
Randwick Bowling Club	Australia	Record daily precipitation	52.6 mm (2.1 in)	43 of 100 (Notable)
Barrie	Canada	Record low maximum temperature	-20.0 C (-4.0 F)	43 of 100 (Notable)
Valley Falls	United States	Record daily precipitation	29.7 mm (1.2 in)	43 of 100 (Notable)
Kukuiula 935	United States	Record daily precipitation	74.4 mm (2.9 in)	42 of 100 (Notable)
Port Macquarie (Bellevue Garde	Australia	Record daily precipitation	84.8 mm (3.3 in)	41 of 100 (Notable)
Kawailoa	United States	Record daily precipitation	67.1 mm (2.6 in)	41 of 100 (Notable)
Manoa 712.1	United States	Record daily precipitation	154.4 mm (6.1 in)	41 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record daily precipitation	63.0 mm (2.5 in)	40 of 100 (Notable)
Botany No.1 Dam	Australia	Record daily precipitation	43.4 mm (1.7 in)	39 of 100 (Notable)
Grass Valley	United States	Record daily precipitation	88.4 mm (3.5 in)	39 of 100 (Notable)
Vanersborg	Sweden	Record low minimum temperature	-20.5 C (-4.9 F)	38 of 100 (Notable)
Skara 1	Sweden	Record low minimum temperature	-24.7 C (-12.5 F)	38 of 100 (Notable)
Forestburg 4 NNE	United States	Record snow depth	33.0 cm (13.0 in)	38 of 100 (Notable)
Kekaha 944	United States	Record daily precipitation	84.6 mm (3.3 in)	38 of 100 (Notable)
Barrie	Canada	Record low minimum temperature	-33.9 C (-29.0 F)	37 of 100 (Notable)
Toronto	Canada	Record low maximum temperature	-13.9 C (7.0 F)	37 of 100 (Notable)
Greenville	United States	Record daily precipitation	87.9 mm (3.5 in)	37 of 100 (Notable)
Moanalua 770	United States	Record daily precipitation	180.6 mm (7.1 in)	37 of 100 (Notable)
Laurieton (Elouera St)	Australia	Record daily precipitation	63.5 mm (2.5 in)	36 of 100 (Notable)
Koolau Dam 833	United States	Record daily precipitation	109.2 mm (4.3 in)	35 of 100 (Notable)
Bukalong Station	Australia	Record daily precipitation	42.4 mm (1.7 in)	34 of 100 (Routine)
Colgate Powerhouse	United States	Record daily precipitation	66.8 mm (2.6 in)	34 of 100 (Routine)
Lahaina 361	United States	Record daily precipitation	113.5 mm (4.5 in)	34 of 100 (Routine)
Lares	Puerto Rico [United States]	Record daily precipitation	57.2 mm (2.3 in)	33 of 100 (Routine)
Tarnaby	Sweden	Record snow depth	121.0 cm (47.6 in)	33 of 100 (Routine)
Kilauea 1134	United States	Record daily precipitation	60.7 mm (2.4 in)	33 of 100 (Routine)
Cumbalum (Fairview)	Australia	Record daily precipitation	77.5 mm (3.1 in)	32 of 100 (Routine)
Coffs Harbour	Australia	Record daily precipitation	97.8 mm (3.9 in)	32 of 100 (Routine)
Mosman Water Supply	Australia	Record daily precipitation	63.0 mm (2.5 in)	32 of 100 (Routine)
Kargopol	Russia	Record low maximum temperature	-29.7 C (-21.5 F)	32 of 100 (Routine)
Woodland 1 WNW	United States	Record daily precipitation	56.4 mm (2.2 in)	32 of 100 (Routine)
Waianae 798	United States	Record daily precipitation	71.4 mm (2.8 in)	32 of 100 (Routine)
Byron Bay (Jacaranda Drive)	Australia	Record daily precipitation	87.6 mm (3.4 in)	30 of 100 (Routine)

Counts by Type and Timescale

726 records

Records set or tied on 20 December 1955 by type: Highest daily maximum 71, Lowest daily maximum 112, Highest daily minimum 141, Lowest daily minimum 52, Heaviest daily rainfall 285, Heaviest daily snowfall 43, Deepest snow cover 22.

Records on 20 December 1955 by type
Record type	Records
Highest daily maximum	71
Lowest daily maximum	112
Highest daily minimum	141
Lowest daily minimum	52
Heaviest daily rainfall	285
Heaviest daily snowfall	43
Deepest snow cover	22

Records on 20 December 1955 by timescale: all-time 4, monthly 12, daily 710.

How Much Records Were Beaten By

599 broken records

Margins by which the 599 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 460.0. Ties are not counted.

Top 20 by Significance

20 December 1955

Top 20 records on 20 December 1955 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 1955	Yeoval Post Office, AU	daily rain	71.1 mm (2.8 in)	46.5 mm (1.8 in)	57 years	62 of 100 (Major)
20 December 1955	Kapalama 773, US	monthly rain	190.5 mm (7.5 in)	62.2 mm (2.4 in)	31 years	60 of 100 (Major)
20 December 1955	Aiea Fld 764A, US	daily rain	155.2 mm (6.1 in)	111.5 mm (4.4 in)	46 years	59 of 100 (Notable)
20 December 1955	Kahuku 912, US	daily rain	76.5 mm (3.0 in)	60.5 mm (2.4 in)	40 years	57 of 100 (Notable)
20 December 1955	Kualapuu 534, US	daily rain	133.9 mm (5.3 in)	99.6 mm (3.9 in)	40 years	57 of 100 (Notable)
20 December 1955	Koele 693, US	daily rain	142.7 mm (5.6 in)	91.1 mm (3.6 in)	40 years	56 of 100 (Notable)
20 December 1955	Smith 1 N, US	daily rain	35.6 mm (1.4 in)	30.5 mm (1.2 in)	36 years	55 of 100 (Notable)
20 December 1955	Olowalu 296.1, US	daily rain	106.7 mm (4.2 in)	94.0 mm (3.7 in)	36 years	55 of 100 (Notable)
20 December 1955	Kaanapali AP 453.1, US	daily rain	109.2 mm (4.3 in)	83.0 mm (3.3 in)	24 years	52 of 100 (Notable)
20 December 1955	Great Falls, CA	all-time snowfall	35.6 cm (14.0 in)	7.7 cm (3.0 in)	12 years	51 of 100 (Notable)
20 December 1955	Ewa Plantation 741, US	daily rain	94.0 mm (3.7 in)	83.3 mm (3.3 in)	30 years	50 of 100 (Notable)
20 December 1955	Sydney (Observatory Hill), AU	daily rain	50.0 mm (2.0 in)	21.0 mm (0.8 in)	73 years	49 of 100 (Notable)
20 December 1955	Downieville, US	daily rain	144.8 mm (5.7 in)	92.7 mm (3.6 in)	33 years	48 of 100 (Notable)
20 December 1955	Grove Farm 1021, US	daily rain	106.4 mm (4.2 in)	91.4 mm (3.6 in)	12 years	48 of 100 (Notable)
20 December 1955	Waiawa 943, US	daily rain	86.9 mm (3.4 in)	53.4 mm (2.1 in)	46 years	48 of 100 (Notable)
20 December 1955	Koloa 936, US	daily rain	86.4 mm (3.4 in)	65.3 mm (2.6 in)	8 years	47 of 100 (Notable)
20 December 1955	Sydney Botanic Gardens, AU	daily rain	53.8 mm (2.1 in)	30.9 mm (1.2 in)	60 years	46 of 100 (Notable)
20 December 1955	Nevada City, US	daily rain	147.6 mm (5.8 in)	86.6 mm (3.4 in)	2 years	46 of 100 (Notable)
20 December 1955	Aakukui 1007, US	daily rain	101.6 mm (4.0 in)	74.7 mm (2.9 in)	12 years	46 of 100 (Notable)
20 December 1955	Kipahulu 258, US	daily rain	161.3 mm (6.4 in)	128.3 mm (5.1 in)	8 years	46 of 100 (Notable)

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 1955

Records set or tied on this calendar date in each year from 1793 to 1955. 1955 had 726 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 1955-12-20: 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 100	590
100 to 200	6
200 to 300	2
300 to 400	0
400 to 500	1