Weather Records on 20 December 2021

442 weather records were set or tied worldwide on 20 December 2021. Highest significance: Whitman Mission, US.

Key Facts for 20 December 2021

On 20 December 2021, 442 weather records were set or tied at long-record stations worldwide.
202 were record highs and 48 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 10 monthly and 431 daily.
Whitman Mission set a daily record precipitation of 28.2 mm (1.1 in) on 20 December 2021.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 467 records.

Record Map

442 stations

442 station records on 20 December 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Whitman Mission	United States	Record daily precipitation	28.2 mm (1.1 in)	61 of 100 (Major)
Cle Elum	United States	Record daily snowfall	30.5 cm (12.0 in)	55 of 100 (Notable)
Old Delamere	Australia	Record daily precipitation	94.0 mm (3.7 in)	54 of 100 (Notable)
Mansfield (Post Office)	Australia	Record daily precipitation	27.0 mm (1.1 in)	52 of 100 (Notable)
Port Isabel	United States	Record daily precipitation	43.2 mm (1.7 in)	52 of 100 (Notable)
Wyalong Post Office	Australia	Record daily precipitation	25.0 mm (1.0 in)	51 of 100 (Notable)
Mill Creek Dam	United States	Record daily precipitation	29.2 mm (1.1 in)	51 of 100 (Notable)
Chiltern (Post Office)	Australia	Record daily precipitation	62.0 mm (2.4 in)	49 of 100 (Notable)
Harlingen	United States	Record daily precipitation	45.0 mm (1.8 in)	49 of 100 (Notable)
Springhurst	Australia	Record daily precipitation	57.0 mm (2.2 in)	47 of 100 (Notable)
Springdale	United States	Record daily snowfall	10.2 cm (4.0 in)	45 of 100 (Notable)
Yackandandah	Australia	Record daily precipitation	56.2 mm (2.2 in)	44 of 100 (Notable)
Wymah (Gwandallen)	Australia	Record daily precipitation	45.0 mm (1.8 in)	43 of 100 (Notable)
Wooragee	Australia	Record daily precipitation	49.8 mm (2.0 in)	43 of 100 (Notable)
Raymondville	United States	Record daily precipitation	29.2 mm (1.1 in)	43 of 100 (Notable)
Corowa Airport	Australia	Record daily precipitation	53.0 mm (2.1 in)	42 of 100 (Notable)
Eldorado	Australia	Record daily precipitation	38.2 mm (1.5 in)	42 of 100 (Notable)
Santa Rosa 3 WNW	United States	Record daily precipitation	28.7 mm (1.1 in)	42 of 100 (Notable)
Craig	United States	Record low maximum temperature	-1.7 C (28.9 F)	42 of 100 (Notable)
McAllen	United States	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Rutherglen Research	Australia	Record daily precipitation	48.8 mm (1.9 in)	40 of 100 (Notable)
Tanana AP	United States	Record high minimum temperature	-3.2 C (26.2 F)	40 of 100 (Notable)
Beechworth Composite	Australia	Record daily precipitation	57.0 mm (2.2 in)	39 of 100 (Notable)
Inverness 3 SE	United States	Record high maximum temperature	29.4 C (84.9 F)	39 of 100 (Notable)
Barrow AP	United States	Record high maximum temperature	0.0 C (32.0 F)	39 of 100 (Notable)
Thredbo AWS	Australia	Record daily precipitation	118.0 mm (4.6 in)	37 of 100 (Notable)
Mitta Mitta Forestry	Australia	Record daily precipitation	53.8 mm (2.1 in)	37 of 100 (Notable)
Quincy 3 SSW	United States	Record daily precipitation	57.2 mm (2.3 in)	37 of 100 (Notable)
Wiseman	United States	Record snow depth	88.9 cm (35.0 in)	37 of 100 (Notable)
Anyang	China	Record high maximum temperature	19.8 C (67.6 F)	36 of 100 (Notable)
Corowa Airport	Australia	Record low minimum temperature	0.0 C (32.0 F)	35 of 100 (Notable)
Jinzhou	China	Record high maximum temperature	13.2 C (55.8 F)	35 of 100 (Notable)
Corvallis Water Bureau	United States	Record daily precipitation	80.0 mm (3.1 in)	35 of 100 (Notable)
Daytona Beach	United States	Record high minimum temperature	18.9 C (66.0 F)	34 of 100 (Routine)
McArthur River Mine	Australia	Record daily precipitation	74.0 mm (2.9 in)	33 of 100 (Routine)
M.O. Ranchi	India	Record low maximum temperature	18.8 C (65.8 F)	33 of 100 (Routine)
Bungowannah (Roseleigh)	Australia	Record daily precipitation	27.2 mm (1.1 in)	32 of 100 (Routine)
Shasta Dam	United States	Record low maximum temperature	3.3 C (37.9 F)	32 of 100 (Routine)
Judith Gap	United States	Record snow depth	20.3 cm (8.0 in)	31 of 100 (Routine)
Port Mansfield	United States	Record daily precipitation	26.4 mm (1.0 in)	31 of 100 (Routine)
Batlow Post Office	Australia	Record daily precipitation	48.0 mm (1.9 in)	30 of 100 (Routine)
Tooma (Gravel Point)	Australia	Record daily precipitation	25.1 mm (1.0 in)	30 of 100 (Routine)
Yarrangobilly Caves	Australia	Record daily precipitation	55.8 mm (2.2 in)	30 of 100 (Routine)
Uplands (Gibbo River Park)	Australia	Record daily precipitation	50.0 mm (2.0 in)	30 of 100 (Routine)
Indigo	Australia	Record daily precipitation	43.0 mm (1.7 in)	30 of 100 (Routine)
Guangzhou	China	Record daily precipitation	50.8 mm (2.0 in)	30 of 100 (Routine)
Yangjiang	China	Record daily precipitation	49.0 mm (1.9 in)	30 of 100 (Routine)
Carthage Wtp	United States	Record daily precipitation	30.5 mm (1.2 in)	30 of 100 (Routine)
Key West NAS	United States	Record high minimum temperature	24.4 C (75.9 F)	30 of 100 (Routine)
Adaminaby (Yaouk)	Australia	Record daily precipitation	46.2 mm (1.8 in)	29 of 100 (Routine)
Dartmouth Reservoir	Australia	Record daily precipitation	46.0 mm (1.8 in)	29 of 100 (Routine)
Buchan South	Australia	Record daily precipitation	43.4 mm (1.7 in)	29 of 100 (Routine)
Mulwala Post Office	Australia	Record daily precipitation	44.4 mm (1.7 in)	28 of 100 (Routine)
Huoshan	China	Record high maximum temperature	19.7 C (67.5 F)	28 of 100 (Routine)
Ceres Aero	Argentina	Record high minimum temperature	24.0 C (75.2 F)	27 of 100 (Routine)
Bruce (Australian Institute of	Australia	Record daily precipitation	28.8 mm (1.1 in)	27 of 100 (Routine)
Lake Tyers	Australia	Record daily precipitation	38.8 mm (1.5 in)	27 of 100 (Routine)
Hefei	China	Record high maximum temperature	18.4 C (65.1 F)	27 of 100 (Routine)
Nouasseur	Morocco	Record high maximum temperature	26.1 C (79.0 F)	27 of 100 (Routine)
Fairbanks Intl AP	United States	Record high minimum temperature	-5.5 C (22.1 F)	27 of 100 (Routine)

Counts by Type and Timescale

442 records

Records set or tied on 20 December 2021 by type: Highest daily maximum 107, Lowest daily maximum 27, Highest daily minimum 95, Lowest daily minimum 21, Heaviest daily rainfall 168, Heaviest daily snowfall 9, Deepest snow cover 15.

Records on 20 December 2021 by type
Record type	Records
Highest daily maximum	107
Lowest daily maximum	27
Highest daily minimum	95
Lowest daily minimum	21
Heaviest daily rainfall	168
Heaviest daily snowfall	9
Deepest snow cover	15

Records on 20 December 2021 by timescale: all-time 1, monthly 10, daily 431.

How Much Records Were Beaten By

376 broken records

Margins by which the 376 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

20 December 2021

Top 20 records on 20 December 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 2021	Whitman Mission, US	daily rain	28.2 mm (1.1 in)	19.1 mm (0.8 in)	52 years	61 of 100 (Major)
20 December 2021	Cle Elum, US	daily snowfall	30.5 cm (12.0 in)	10.2 cm (4.0 in)	110 years	55 of 100 (Notable)
20 December 2021	Old Delamere, AU	daily rain	94.0 mm (3.7 in)	35.6 mm (1.4 in)	92 years	54 of 100 (Notable)
20 December 2021	Mansfield (Post Office), AU	daily rain	27.0 mm (1.1 in)	11.8 mm (0.5 in)	119 years	52 of 100 (Notable)
20 December 2021	Port Isabel, US	daily rain	43.2 mm (1.7 in)	23.9 mm (0.9 in)	80 years	52 of 100 (Notable)
20 December 2021	Wyalong Post Office, AU	daily rain	25.0 mm (1.0 in)	12.3 mm (0.5 in)	123 years	51 of 100 (Notable)
20 December 2021	Mill Creek Dam, US	daily rain	29.2 mm (1.1 in)	15.0 mm (0.6 in)	52 years	51 of 100 (Notable)
20 December 2021	Chiltern (Post Office), AU	daily rain	62.0 mm (2.4 in)	36.6 mm (1.4 in)	18 years	49 of 100 (Notable)
20 December 2021	Harlingen, US	daily rain	45.0 mm (1.8 in)	17.1 mm (0.7 in)	80 years	49 of 100 (Notable)
20 December 2021	Springhurst, AU	daily rain	57.0 mm (2.2 in)	32.8 mm (1.3 in)	18 years	47 of 100 (Notable)
20 December 2021	Springdale, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	70 years	45 of 100 (Notable)
20 December 2021	Yackandandah, AU	daily rain	56.2 mm (2.2 in)	36.2 mm (1.4 in)	18 years	44 of 100 (Notable)
20 December 2021	Wymah (Gwandallen), AU	daily rain	45.0 mm (1.8 in)	21.1 mm (0.8 in)	50 years	43 of 100 (Notable)
20 December 2021	Wooragee, AU	daily rain	49.8 mm (2.0 in)	31.4 mm (1.2 in)	18 years	43 of 100 (Notable)
20 December 2021	Raymondville, US	daily rain	29.2 mm (1.1 in)	7.6 mm (0.30 in)	80 years	43 of 100 (Notable)
20 December 2021	Corowa Airport, AU	daily rain	53.0 mm (2.1 in)	29.0 mm (1.1 in)	18 years	42 of 100 (Notable)
20 December 2021	Eldorado, AU	daily rain	38.2 mm (1.5 in)	9.8 mm (0.39 in)	84 years	42 of 100 (Notable)
20 December 2021	Santa Rosa 3 WNW, US	daily rain	28.7 mm (1.1 in)	24.9 mm (1.0 in)	30 years	42 of 100 (Notable)
20 December 2021	Craig, US	daily low max	-1.7 C (28.9 F)	3.9 C (7.0 F)	76 years	42 of 100 (Notable)
20 December 2021	McAllen, US	daily rain	25.4 mm (1.0 in)	16.3 mm (0.6 in)	38 years	41 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 2021

Records set or tied on this calendar date in each year from 1793 to 2021. 2021 had 442 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 2021-12-20: 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 50	365
50 to 100	6
100 to 150	3
150 to 200	1
200 to 250	1