Weather Records on 20 December 2011

846 weather records were set or tied worldwide on 20 December 2011. Highest significance: Healy, US.

Key Facts for 20 December 2011

On 20 December 2011, 846 weather records were set or tied at long-record stations worldwide.
186 were record highs and 110 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 64 monthly and 782 daily.
Healy set a monthly record daily snowfall of 33.0 cm (13.0 in) on 20 December 2011.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 465 records.

Record Map

846 stations

846 station records on 20 December 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Healy	United States	Record daily snowfall	33.0 cm (13.0 in)	77 of 100 (Major)
Clayton Muni Air Pk	United States	Record snow depth	38.1 cm (15.0 in)	76 of 100 (Major)
El Dorado	United States	Record daily precipitation	51.3 mm (2.0 in)	75 of 100 (Major)
Hartley 4 ESE	United States	Record daily precipitation	50.8 mm (2.0 in)	75 of 100 (Major)
Jefferson 3SE	United States	Record daily precipitation	55.9 mm (2.2 in)	74 of 100 (Major)
Meade	United States	Record daily snowfall	18.3 cm (7.2 in)	73 of 100 (Major)
Newton	United States	Record daily precipitation	48.3 mm (1.9 in)	72 of 100 (Major)
Lightning Ridge Post Office	Australia	Record daily precipitation	72.0 mm (2.8 in)	70 of 100 (Major)
Lamar	United States	Record snow depth	48.3 cm (19.0 in)	69 of 100 (Major)
McPherson	United States	Record daily precipitation	41.1 mm (1.6 in)	69 of 100 (Major)
Ness City	United States	Record daily snowfall	20.3 cm (8.0 in)	65 of 100 (Major)
Harrisonville	United States	Record daily precipitation	48.3 mm (1.9 in)	65 of 100 (Major)
Kelly Rch	United States	Record daily snowfall	25.4 cm (10.0 in)	64 of 100 (Major)
Mt Hope	United States	Record daily precipitation	52.6 mm (2.1 in)	63 of 100 (Major)
Burdett 3S	United States	Record daily snowfall	15.2 cm (6.0 in)	62 of 100 (Major)
Utica	United States	Record snow depth	27.9 cm (11.0 in)	62 of 100 (Major)
Pasamonte	United States	Record snow depth	30.5 cm (12.0 in)	60 of 100 (Major)
Claflin	United States	Record daily snowfall	15.2 cm (6.0 in)	59 of 100 (Notable)
Hays 1 S	United States	Record daily snowfall	25.4 cm (10.0 in)	59 of 100 (Notable)
Kasane	Botswana	Record daily precipitation	99.1 mm (3.9 in)	58 of 100 (Notable)
Prospect Reservoir	Australia	Record daily precipitation	46.3 mm (1.8 in)	57 of 100 (Notable)
Syracuse 1NE	United States	Record daily snowfall	25.4 cm (10.0 in)	57 of 100 (Notable)
Lipscomb	United States	Record daily precipitation	76.2 mm (3.0 in)	56 of 100 (Notable)
Elkhart	United States	Record daily snowfall	26.7 cm (10.5 in)	55 of 100 (Notable)
Ponca City	United States	Record daily precipitation	43.4 mm (1.7 in)	55 of 100 (Notable)
Woodlands	Australia	Record daily precipitation	71.0 mm (2.8 in)	54 of 100 (Notable)
Overbrook 5 SE	United States	Record daily precipitation	42.9 mm (1.7 in)	54 of 100 (Notable)
Garden City Exp STN	United States	Record daily snowfall	20.3 cm (8.0 in)	53 of 100 (Notable)
Lamar	United States	Record daily snowfall	48.3 cm (19.0 in)	52 of 100 (Notable)
Barnard	United States	Record snow depth	17.8 cm (7.0 in)	52 of 100 (Notable)
Winfield 3NE	United States	Record daily precipitation	73.2 mm (2.9 in)	52 of 100 (Notable)
Greensburg	United States	Record daily precipitation	31.7 mm (1.2 in)	51 of 100 (Notable)
Lakin	United States	Record daily snowfall	30.5 cm (12.0 in)	51 of 100 (Notable)
Donegal 2 NW	United States	Record daily precipitation	38.1 mm (1.5 in)	51 of 100 (Notable)
Anthony	United States	Record daily precipitation	52.3 mm (2.1 in)	51 of 100 (Notable)
Hays 1 S	United States	Record snow depth	25.4 cm (10.0 in)	50 of 100 (Notable)
Stratford	United States	Record daily precipitation	28.2 mm (1.1 in)	50 of 100 (Notable)
Pichucalco (Smn)	Mexico	Record low minimum temperature	5.0 C (41.0 F)	49 of 100 (Notable)
John Martin Dam	United States	Record daily snowfall	29.0 cm (11.4 in)	49 of 100 (Notable)
Bison 3NW	United States	Record daily snowfall	26.7 cm (10.5 in)	49 of 100 (Notable)
Paris 5 S	United States	Record daily precipitation	34.0 mm (1.3 in)	49 of 100 (Notable)
Elkhart	United States	Record snow depth	27.9 cm (11.0 in)	48 of 100 (Notable)
Bravo	United States	Record daily snowfall	25.4 cm (10.0 in)	48 of 100 (Notable)
South Pass City	United States	Record daily snowfall	22.9 cm (9.0 in)	48 of 100 (Notable)
Walsh 1 W	United States	Record snow depth	45.7 cm (18.0 in)	47 of 100 (Notable)
Cimarron	United States	Record snow depth	20.3 cm (8.0 in)	47 of 100 (Notable)
Lincoln 1 SE	United States	Record snow depth	17.8 cm (7.0 in)	47 of 100 (Notable)
Clinton	United States	Record daily precipitation	45.2 mm (1.8 in)	47 of 100 (Notable)
Fulton	United States	Record daily precipitation	38.1 mm (1.5 in)	47 of 100 (Notable)
Waxahachie	United States	Record daily precipitation	57.1 mm (2.2 in)	47 of 100 (Notable)
Campo 7 S	United States	Record daily snowfall	40.6 cm (16.0 in)	46 of 100 (Notable)
Lamar	United States	Record daily precipitation	28.7 mm (1.1 in)	46 of 100 (Notable)
Alexander	United States	Record daily snowfall	25.4 cm (10.0 in)	46 of 100 (Notable)
Ellsworth	United States	Record daily precipitation	31.5 mm (1.2 in)	46 of 100 (Notable)
Lincoln 1 SE	United States	Record daily snowfall	16.5 cm (6.5 in)	46 of 100 (Notable)
Caplinger Mills	United States	Record daily precipitation	61.5 mm (2.4 in)	46 of 100 (Notable)
New Franklin 1W	United States	Record daily precipitation	38.6 mm (1.5 in)	46 of 100 (Notable)
Caldwell	United States	Record daily precipitation	67.1 mm (2.6 in)	45 of 100 (Notable)
Ellis	United States	Record snow depth	30.5 cm (12.0 in)	45 of 100 (Notable)
Holton	United States	Record daily snowfall	8.1 cm (3.2 in)	45 of 100 (Notable)

Counts by Type and Timescale

846 records

Records set or tied on 20 December 2011 by type: Highest daily maximum 69, Lowest daily maximum 61, Highest daily minimum 117, Lowest daily minimum 49, Heaviest daily rainfall 358, Heaviest daily snowfall 113, Deepest snow cover 79.

Records on 20 December 2011 by type
Record type	Records
Highest daily maximum	69
Lowest daily maximum	61
Highest daily minimum	117
Lowest daily minimum	49
Heaviest daily rainfall	358
Heaviest daily snowfall	113
Deepest snow cover	79

Records on 20 December 2011 by timescale: all-time 0, monthly 64, daily 782.

How Much Records Were Beaten By

695 broken records

Margins by which the 695 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 381.0. Ties are not counted.

Top 20 by Significance

20 December 2011

Top 20 records on 20 December 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 2011	Healy, US	monthly snowfall	33.0 cm (13.0 in)	11.4 cm (4.5 in)	103 years	77 of 100 (Major)
20 December 2011	Clayton Muni Air Pk, US	daily snow depth	38.1 cm (15.0 in)	33.0 cm (13.0 in)	88 years	76 of 100 (Major)
20 December 2011	El Dorado, US	daily rain	51.3 mm (2.0 in)	32.8 mm (1.3 in)	90 years	75 of 100 (Major)
20 December 2011	Hartley 4 ESE, US	monthly rain	50.8 mm (2.0 in)	22.4 mm (0.9 in)	52 years	75 of 100 (Major)
20 December 2011	Jefferson 3SE, US	daily rain	55.9 mm (2.2 in)	36.6 mm (1.4 in)	90 years	74 of 100 (Major)
20 December 2011	Meade, US	daily snowfall	18.3 cm (7.2 in)	18.3 cm (7.2 in)	113 years	73 of 100 (Major)
20 December 2011	Newton, US	daily rain	48.3 mm (1.9 in)	26.7 mm (1.1 in)	100 years	72 of 100 (Major)
20 December 2011	Lightning Ridge Post Office, AU	daily rain	72.0 mm (2.8 in)	43.3 mm (1.7 in)	121 years	70 of 100 (Major)
20 December 2011	Lamar, US	daily snow depth	48.3 cm (19.0 in)	22.9 cm (9.0 in)	92 years	69 of 100 (Major)
20 December 2011	McPherson, US	daily rain	41.1 mm (1.6 in)	23.3 mm (0.9 in)	96 years	69 of 100 (Major)
20 December 2011	Ness City, US	daily snowfall	20.3 cm (8.0 in)	12.7 cm (5.0 in)	96 years	65 of 100 (Major)
20 December 2011	Harrisonville, US	daily rain	48.3 mm (1.9 in)	24.4 mm (1.0 in)	115 years	65 of 100 (Major)
20 December 2011	Kelly Rch, US	daily snowfall	25.4 cm (10.0 in)	25.4 cm (10.0 in)	62 years	64 of 100 (Major)
20 December 2011	Mt Hope, US	daily rain	52.6 mm (2.1 in)	19.6 mm (0.8 in)	100 years	63 of 100 (Major)
20 December 2011	Burdett 3S, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	69 years	62 of 100 (Major)
20 December 2011	Utica, US	daily snow depth	27.9 cm (11.0 in)	20.3 cm (8.0 in)	45 years	62 of 100 (Major)
20 December 2011	Pasamonte, US	daily snow depth	30.5 cm (12.0 in)	20.3 cm (8.0 in)	44 years	60 of 100 (Major)
20 December 2011	Claflin, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	80 years	59 of 100 (Notable)
20 December 2011	Hays 1 S, US	daily snowfall	25.4 cm (10.0 in)	8.9 cm (3.5 in)	100 years	59 of 100 (Notable)
20 December 2011	Kasane, BW	daily rain	99.1 mm (3.9 in)	59.1 mm (2.3 in)	36 years	58 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 2011

Records set or tied on this calendar date in each year from 1793 to 2011. 2011 had 846 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 2011-12-20: 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 2026-10-16 (16 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	583
50 to 100	60
100 to 150	28
150 to 200	13
200 to 250	5
250 to 300	2
300 to 350	3
350 to 400	1