Weather Records on 17 December 2020

768 weather records were set or tied worldwide on 17 December 2020. Highest significance: Renovo, US.

Key Facts for 17 December 2020

On 17 December 2020, 768 weather records were set or tied at long-record stations worldwide.
121 were record highs and 32 were record lows, counting maximum and minimum temperature.
By timescale, 14 were all-time records, 51 monthly and 703 daily.
Renovo set an all-time record daily snowfall of 71.1 cm (28.0 in) on 17 December 2020.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 461 records.

Record Map

768 stations

768 station records on 17 December 2020 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 December 2020: highest significance records shown on the map
Station	Country	Type	Value	Significance
Renovo	United States	Record daily snowfall	71.1 cm (28.0 in)	100 of 100 (Exceptional)
Lakeport 2	United States	Record daily snowfall	86.4 cm (34.0 in)	83 of 100 (Exceptional)
Wellsboro 4 SW	United States	Record daily snowfall	62.2 cm (24.5 in)	81 of 100 (Exceptional)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	109.6 mm (4.3 in)	80 of 100 (Exceptional)
Selinsgrove 2 S	United States	Record daily snowfall	31.8 cm (12.5 in)	80 of 100 (Exceptional)
Ridgway	United States	Record daily snowfall	33.5 cm (13.2 in)	79 of 100 (Major)
Concord ASOS	United States	Record daily snowfall	65.0 cm (25.6 in)	79 of 100 (Major)
Tallebudgera Guineas Creek Roa	Australia	Record daily precipitation	314.0 mm (12.4 in)	78 of 100 (Major)
Liberty 1 NE	United States	Record daily snowfall	40.6 cm (16.0 in)	77 of 100 (Major)
Tamaqua 4 N Dam	United States	Record daily snowfall	33.0 cm (13.0 in)	74 of 100 (Major)
Towanda 1 S	United States	Record daily snowfall	71.1 cm (28.0 in)	74 of 100 (Major)
Stevenson Dam	United States	Record daily snowfall	74.7 cm (29.4 in)	73 of 100 (Major)
Canton	United States	Record daily snowfall	73.7 cm (29.0 in)	72 of 100 (Major)
Nimbin Post Office	Australia	Record daily precipitation	138.0 mm (5.4 in)	69 of 100 (Major)
Saratoga Springs 4 SW	United States	Record daily snowfall	81.3 cm (32.0 in)	69 of 100 (Major)
Newport	United States	Record daily snowfall	41.9 cm (16.5 in)	67 of 100 (Major)
Covington 2 WSW	United States	Record daily snowfall	71.1 cm (28.0 in)	66 of 100 (Major)
Lake Boga	Australia	Record daily precipitation	48.6 mm (1.9 in)	65 of 100 (Major)
Greene	United States	Record snow depth	78.7 cm (31.0 in)	65 of 100 (Major)
Orienta 1SSW	United States	Record snow depth	15.2 cm (6.0 in)	65 of 100 (Major)
Binghamton	United States	Record daily snowfall	67.1 cm (26.4 in)	65 of 100 (Major)
Delhi 2 SE	United States	Record daily snowfall	58.4 cm (23.0 in)	64 of 100 (Major)
Beaver Falls 1 NE	United States	Record daily snowfall	15.2 cm (6.0 in)	64 of 100 (Major)
Lock Haven Sewage Plt	United States	Record daily snowfall	48.3 cm (19.0 in)	64 of 100 (Major)
Sunbury	United States	Record daily snowfall	33.0 cm (13.0 in)	64 of 100 (Major)
Wellsboro 4 SW	United States	Record daily precipitation	47.2 mm (1.9 in)	64 of 100 (Major)
Elmira	United States	Record daily precipitation	48.5 mm (1.9 in)	63 of 100 (Major)
Acmetonia Lock 3	United States	Record daily snowfall	20.3 cm (8.0 in)	63 of 100 (Major)
Narooma Rvcp	Australia	Record daily precipitation	68.0 mm (2.7 in)	62 of 100 (Major)
Hamburg	United States	Record daily snowfall	20.3 cm (8.0 in)	62 of 100 (Major)
Lake City 2 E	United States	Record daily precipitation	75.9 mm (3.0 in)	61 of 100 (Major)
Elmira	United States	Record snow depth	48.3 cm (19.0 in)	61 of 100 (Major)
Glenwillard Dashields L&D	United States	Record daily snowfall	19.8 cm (7.8 in)	61 of 100 (Major)
Kingfisher	United States	Record snow depth	10.2 cm (4.0 in)	60 of 100 (Major)
Lock Haven Sewage Plt	United States	Record snow depth	48.3 cm (19.0 in)	60 of 100 (Major)
Kerang	Australia	Record daily precipitation	35.2 mm (1.4 in)	59 of 100 (Notable)
Savage Rvr Dam	United States	Record daily snowfall	20.3 cm (8.0 in)	59 of 100 (Notable)
Mullaley (Bando)	Australia	Record daily precipitation	51.0 mm (2.0 in)	58 of 100 (Notable)
Meade	United States	Record snow depth	27.9 cm (11.0 in)	58 of 100 (Notable)
Confluence 1 SW Dam	United States	Record daily snowfall	24.1 cm (9.5 in)	58 of 100 (Notable)
Covington 2 WSW	United States	Record snow depth	71.1 cm (28.0 in)	58 of 100 (Notable)
Stevenson Dam	United States	Record daily precipitation	54.9 mm (2.2 in)	58 of 100 (Notable)
Mundarlo (Yabtree)	Australia	Record daily precipitation	69.0 mm (2.7 in)	57 of 100 (Notable)
Charlotteburg Rsvr	United States	Record daily snowfall	21.6 cm (8.5 in)	57 of 100 (Notable)
Glen Hazel 2 NE Dam	United States	Record daily snowfall	30.5 cm (12.0 in)	57 of 100 (Notable)
New Stanton 1 SW	United States	Record daily snowfall	17.8 cm (7.0 in)	57 of 100 (Notable)
Hanover	United States	Record daily snowfall	49.5 cm (19.5 in)	56 of 100 (Notable)
Corning	United States	Record daily snowfall	36.6 cm (14.4 in)	56 of 100 (Notable)
Wellsville	United States	Record daily snowfall	25.4 cm (10.0 in)	56 of 100 (Notable)
Prince Gallitzin Sp	United States	Record daily snowfall	33.0 cm (13.0 in)	55 of 100 (Notable)
Susquehanna	United States	Record snow depth	50.8 cm (20.0 in)	55 of 100 (Notable)
Rutland	United States	Record daily snowfall	31.5 cm (12.4 in)	55 of 100 (Notable)
Mayo	United States	Record daily precipitation	66.5 mm (2.6 in)	54 of 100 (Notable)
Oakland 1 SE	United States	Record daily snowfall	20.3 cm (8.0 in)	54 of 100 (Notable)
Lewistown	United States	Record daily snowfall	23.9 cm (9.4 in)	54 of 100 (Notable)
Renovo	United States	Record daily precipitation	44.5 mm (1.8 in)	54 of 100 (Notable)
Lankaran	Azerbaijan	Record daily precipitation	99.1 mm (3.9 in)	53 of 100 (Notable)
Mincha	Australia	Record daily precipitation	28.8 mm (1.1 in)	53 of 100 (Notable)
Barnawartha	Australia	Record daily precipitation	42.0 mm (1.7 in)	53 of 100 (Notable)
Conklingville Dam	United States	Record daily snowfall	58.4 cm (23.0 in)	53 of 100 (Notable)

Counts by Type and Timescale

768 records

Records set or tied on 17 December 2020 by type: Highest daily maximum 23, Lowest daily maximum 18, Highest daily minimum 98, Lowest daily minimum 14, Heaviest daily rainfall 319, Heaviest daily snowfall 179, Deepest snow cover 117.

Records on 17 December 2020 by type
Record type	Records
Highest daily maximum	23
Lowest daily maximum	18
Highest daily minimum	98
Lowest daily minimum	14
Heaviest daily rainfall	319
Heaviest daily snowfall	179
Deepest snow cover	117

Records on 17 December 2020 by timescale: all-time 14, monthly 51, daily 703.

How Much Records Were Beaten By

678 broken records

Margins by which the 678 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 592.0. Ties are not counted.

Top 20 by Significance

17 December 2020

Top 20 records on 17 December 2020 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 December 2020	Renovo, US	all-time snowfall	71.1 cm (28.0 in)	25.4 cm (10.0 in)	106 years	100 of 100 (Exceptional)
17 December 2020	Lakeport 2, US	all-time snowfall	86.4 cm (34.0 in)	25.4 cm (10.0 in)	51 years	83 of 100 (Exceptional)
17 December 2020	Wellsboro 4 SW, US	monthly snowfall	62.2 cm (24.5 in)	31.7 cm (12.5 in)	76 years	81 of 100 (Exceptional)
17 December 2020	Mittagong (Beatrice Street), AU	daily rain	109.6 mm (4.3 in)	77.6 mm (3.1 in)	118 years	80 of 100 (Exceptional)
17 December 2020	Selinsgrove 2 S, US	daily snowfall	31.8 cm (12.5 in)	21.6 cm (8.5 in)	112 years	80 of 100 (Exceptional)
17 December 2020	Ridgway, US	daily snowfall	33.5 cm (13.2 in)	18.3 cm (7.2 in)	98 years	79 of 100 (Major)
17 December 2020	Concord ASOS, US	all-time snowfall	65.0 cm (25.6 in)	17.5 cm (6.9 in)	76 years	79 of 100 (Major)
17 December 2020	Tallebudgera Guineas Creek Roa, AU	daily rain	314.0 mm (12.4 in)	227.6 mm (9.0 in)	94 years	78 of 100 (Major)
17 December 2020	Liberty 1 NE, US	daily snowfall	40.6 cm (16.0 in)	25.4 cm (10.0 in)	112 years	77 of 100 (Major)
17 December 2020	Tamaqua 4 N Dam, US	daily snowfall	33.0 cm (13.0 in)	21.6 cm (8.5 in)	88 years	74 of 100 (Major)
17 December 2020	Towanda 1 S, US	all-time snowfall	71.1 cm (28.0 in)	10.1 cm (4.0 in)	80 years	74 of 100 (Major)
17 December 2020	Stevenson Dam, US	all-time snowfall	74.7 cm (29.4 in)	26.2 cm (10.3 in)	26 years	73 of 100 (Major)
17 December 2020	Canton, US	all-time snowfall	73.7 cm (29.0 in)	33.1 cm (13.0 in)	26 years	72 of 100 (Major)
17 December 2020	Nimbin Post Office, AU	daily rain	138.0 mm (5.4 in)	64.8 mm (2.6 in)	94 years	69 of 100 (Major)
17 December 2020	Saratoga Springs 4 SW, US	all-time snowfall	81.3 cm (32.0 in)	20.8 cm (8.2 in)	49 years	69 of 100 (Major)
17 December 2020	Newport, US	daily snowfall	41.9 cm (16.5 in)	30.5 cm (12.0 in)	60 years	67 of 100 (Major)
17 December 2020	Covington 2 WSW, US	all-time snowfall	71.1 cm (28.0 in)	15.2 cm (6.0 in)	27 years	66 of 100 (Major)
17 December 2020	Lake Boga, AU	daily rain	48.6 mm (1.9 in)	23.2 mm (0.9 in)	97 years	65 of 100 (Major)
17 December 2020	Greene, US	daily snow depth	78.7 cm (31.0 in)	43.1 cm (17.0 in)	50 years	65 of 100 (Major)
17 December 2020	Orienta 1SSW, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	64 years	65 of 100 (Major)

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 2020

Records set or tied on this calendar date in each year from 1793 to 2020. 2020 had 768 records.

Counts for years before the ledger starts come from the same station rules.

Records on 12-17 in each year
Year	Records
1793	2
1796	1
1806	2
1808	2
1814	1
1815	1
1839	1
1845	1
1846	4
1847	1
1848	1
1859	3
1866	1
1867	1
1868	1
1869	2
1873	2
1876	3
1877	2
1878	1
1879	2
1881	2
1885	1
1886	1
1888	2
1889	2
1890	4
1892	4
1893	2
1894	4
1895	3
1896	4
1897	4
1898	2
1899	1
1900	6
1901	5
1902	47
1903	2
1904	14
1905	2
1906	17
1907	9
1908	13
1909	5
1910	37
1911	12
1912	15
1913	21
1914	17
1915	31
1916	21
1917	21
1918	21
1919	109
1920	97
1921	94
1922	120
1923	170
1924	505
1925	79
1926	172
1927	143
1928	359
1929	221
1930	362
1931	217
1932	684
1933	710
1934	200
1935	87
1936	504
1937	379
1938	118
1939	1,126
1940	248
1941	261
1942	507
1943	444
1944	189
1945	621
1946	207
1947	258
1948	316
1949	296
1950	294
1951	773
1952	277
1953	283
1954	409
1955	419
1956	448
1957	686
1958	540
1959	548
1960	492
1961	911
1962	676
1963	531
1964	1,239
1965	482
1966	516
1967	1,121
1968	338
1969	238
1970	820
1971	781
1972	601
1973	1,016
1974	390
1975	474
1976	507
1977	1,024
1978	710
1979	951
1980	1,116
1981	1,354
1982	569
1983	1,264
1984	1,618
1985	1,210
1986	743
1987	1,191
1988	481
1989	2,905
1990	866
1991	577
1992	1,461
1993	761
1994	685
1995	956
1996	1,212
1997	1,279
1998	695
1999	901
2000	1,566
2001	1,262
2002	858
2003	751
2004	554
2005	806
2006	1,307
2007	1,100
2008	1,354
2009	926
2010	1,405
2011	430
2012	942
2013	718
2014	370
2015	1,378
2016	1,521
2017	408
2018	498
2019	917
2020	768
2021	908
2022	595
2023	931
2024	560
2025	1,198

Download the Data

Data for records on 2020-12-17: 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	555
100 to 200	94
200 to 300	19
300 to 400	6
400 to 500	2
500 to 600	2