Weather Records on 17 December 2021

908 weather records were set or tied worldwide on 17 December 2021. Highest significance: Sisseton, US.

Key Facts for 17 December 2021

On 17 December 2021, 908 weather records were set or tied at long-record stations worldwide.
752 were record highs and 39 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 895 daily.
Sisseton set a daily record snowfall of 24.6 cm (9.7 in) on 17 December 2021.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 460 records.

Record Map

908 stations

908 station records on 17 December 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 December 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sisseton	United States	Record daily snowfall	24.6 cm (9.7 in)	61 of 100 (Major)
Tunnsjo	Norway	Record daily precipitation	29.0 mm (1.1 in)	58 of 100 (Notable)
McAlester Rgnl AP	United States	Record daily precipitation	49.3 mm (1.9 in)	58 of 100 (Notable)
Tasiilaq	Greenland [Denmark]	Record daily precipitation	119.9 mm (4.7 in)	56 of 100 (Notable)
Irozaki	Japan	Record daily precipitation	64.0 mm (2.5 in)	55 of 100 (Notable)
Gibbs Rch - Jarbidge 24SE	United States	Record daily snowfall	19.8 cm (7.8 in)	55 of 100 (Notable)
Cheboygan	United States	Record high maximum temperature	13.9 C (57.0 F)	49 of 100 (Notable)
Tonopah	United States	Record snow depth	10.2 cm (4.0 in)	49 of 100 (Notable)
Liafoss	Norway	Record daily precipitation	98.8 mm (3.9 in)	48 of 100 (Notable)
Freehold-Marlboro	United States	Record high minimum temperature	12.2 C (54.0 F)	48 of 100 (Notable)
Everett	United States	Record high maximum temperature	21.1 C (70.0 F)	48 of 100 (Notable)
Fayetteville Drake Fld	United States	Record daily precipitation	80.3 mm (3.2 in)	48 of 100 (Notable)
Otteroy	Norway	Record daily precipitation	68.7 mm (2.7 in)	47 of 100 (Notable)
Lawrence	United States	Record high minimum temperature	6.7 C (44.1 F)	47 of 100 (Notable)
Oshima	Japan	Record daily precipitation	81.0 mm (3.2 in)	46 of 100 (Notable)
Overhalla - Unnset	Norway	Record daily precipitation	86.0 mm (3.4 in)	46 of 100 (Notable)
Gravette	United States	Record daily precipitation	58.7 mm (2.3 in)	46 of 100 (Notable)
Romney 1 SW	United States	Record high maximum temperature	23.9 C (75.0 F)	46 of 100 (Notable)
Yamba Pilot Station	Australia	Record daily precipitation	74.8 mm (2.9 in)	45 of 100 (Notable)
Boonton 1 SE	United States	Record high minimum temperature	8.9 C (48.0 F)	45 of 100 (Notable)
Lowville	United States	Record high maximum temperature	15.6 C (60.1 F)	45 of 100 (Notable)
Oswego	United States	Record high maximum temperature	17.8 C (64.0 F)	45 of 100 (Notable)
Parsons Wtp	United States	Record daily precipitation	75.4 mm (3.0 in)	45 of 100 (Notable)
Brady	United States	Record high minimum temperature	17.2 C (63.0 F)	45 of 100 (Notable)
Saint Johnsbury	United States	Record high minimum temperature	5.6 C (42.1 F)	45 of 100 (Notable)
Oneonta	United States	Record high minimum temperature	13.9 C (57.0 F)	44 of 100 (Notable)
Storrs	United States	Record high minimum temperature	10.6 C (51.1 F)	44 of 100 (Notable)
Blue Hill Coop	United States	Record high minimum temperature	10.6 C (51.1 F)	44 of 100 (Notable)
Berlin	United States	Record high maximum temperature	15.0 C (59.0 F)	44 of 100 (Notable)
Tupper Lake Sunmount	United States	Record high maximum temperature	13.3 C (55.9 F)	44 of 100 (Notable)
Selinsgrove 2 S	United States	Record high maximum temperature	16.7 C (62.1 F)	44 of 100 (Notable)
Keene	United States	Record high minimum temperature	3.9 C (39.0 F)	43 of 100 (Notable)
Charlotteburg Rsvr	United States	Record high minimum temperature	10.0 C (50.0 F)	43 of 100 (Notable)
Hightstown 2 W	United States	Record high minimum temperature	10.0 C (50.0 F)	43 of 100 (Notable)
Auburn	United States	Record high maximum temperature	16.1 C (61.0 F)	43 of 100 (Notable)
State College	United States	Record high maximum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Hillsboro	United States	Record high maximum temperature	28.3 C (82.9 F)	43 of 100 (Notable)
Afjord - Momyr	Norway	Record daily precipitation	132.2 mm (5.2 in)	42 of 100 (Notable)
Woodland	United States	Record high minimum temperature	2.8 C (37.0 F)	42 of 100 (Notable)
Nashua 2 NNW	United States	Record high minimum temperature	3.9 C (39.0 F)	42 of 100 (Notable)
Sussex 1 NW	United States	Record high minimum temperature	8.3 C (46.9 F)	42 of 100 (Notable)
Mocksville 5SE	United States	Record high minimum temperature	9.4 C (48.9 F)	42 of 100 (Notable)
Rocksprings	United States	Record high minimum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Aberdeen	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Amherst	United States	Record high minimum temperature	5.0 C (41.0 F)	41 of 100 (Notable)
Tonopah	United States	Record low minimum temperature	-13.9 C (7.0 F)	41 of 100 (Notable)
Mohonk Lake	United States	Record high minimum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Lexington	United States	Record high maximum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
Brenham	United States	Record high minimum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Cleburne	United States	Record high maximum temperature	27.8 C (82.0 F)	41 of 100 (Notable)
Grantsville 2W	United States	Record snow depth	17.8 cm (7.0 in)	41 of 100 (Notable)
Oakland 1 SE	United States	Record high maximum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Flemington 5 NNW	United States	Record high minimum temperature	7.8 C (46.0 F)	40 of 100 (Notable)
Santuck	United States	Record high minimum temperature	13.3 C (55.9 F)	40 of 100 (Notable)
Ballinger 2 NW	United States	Record high minimum temperature	13.3 C (55.9 F)	40 of 100 (Notable)
Beaumont City	United States	Record high maximum temperature	28.3 C (82.9 F)	40 of 100 (Notable)
Conroe	United States	Record high maximum temperature	28.3 C (82.9 F)	40 of 100 (Notable)
Hallettsville 2 N	United States	Record high minimum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Luling	United States	Record high minimum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Clarksburg 1	United States	Record high maximum temperature	21.1 C (70.0 F)	40 of 100 (Notable)

Counts by Type and Timescale

908 records

Records set or tied on 17 December 2021 by type: Highest daily maximum 365, Lowest daily maximum 14, Highest daily minimum 387, Lowest daily minimum 25, Heaviest daily rainfall 77, Heaviest daily snowfall 23, Deepest snow cover 17.

Records on 17 December 2021 by type
Record type	Records
Highest daily maximum	365
Lowest daily maximum	14
Highest daily minimum	387
Lowest daily minimum	25
Heaviest daily rainfall	77
Heaviest daily snowfall	23
Deepest snow cover	17

Records on 17 December 2021 by timescale: all-time 0, monthly 13, daily 895.

How Much Records Were Beaten By

719 broken records

Margins by which the 719 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 195.0. Ties are not counted.

Top 20 by Significance

17 December 2021

Top 20 records on 17 December 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 December 2021	Sisseton, US	daily snowfall	24.6 cm (9.7 in)	19.5 cm (7.7 in)	36 years	61 of 100 (Major)
17 December 2021	Tunnsjo, NO	daily rain	29.0 mm (1.1 in)	11.1 mm (0.4 in)	82 years	58 of 100 (Notable)
17 December 2021	McAlester Rgnl AP, US	daily rain	49.3 mm (1.9 in)	30.0 mm (1.2 in)	114 years	58 of 100 (Notable)
17 December 2021	Tasiilaq, GL	daily rain	119.9 mm (4.7 in)	94.8 mm (3.7 in)	20 years	56 of 100 (Notable)
17 December 2021	Irozaki, JP	daily rain	64.0 mm (2.5 in)	38.7 mm (1.5 in)	60 years	55 of 100 (Notable)
17 December 2021	Gibbs Rch - Jarbidge 24SE, US	daily snowfall	19.8 cm (7.8 in)	14.7 cm (5.8 in)	66 years	55 of 100 (Notable)
17 December 2021	Cheboygan, US	daily high max	13.9 C (57.0 F)	6.1 C (11.0 F)	92 years	49 of 100 (Notable)
17 December 2021	Tonopah, US	daily snow depth	10.2 cm (4.0 in)	7.7 cm (3.0 in)	74 years	49 of 100 (Notable)
17 December 2021	Liafoss, NO	monthly rain	98.8 mm (3.9 in)	0.4 mm (0.02 in)	94 years	48 of 100 (Notable)
17 December 2021	Freehold-Marlboro, US	daily high min	12.2 C (54.0 F)	7.2 C (13.0 F)	84 years	48 of 100 (Notable)
17 December 2021	Everett, US	daily high max	21.1 C (70.0 F)	5.0 C (9.0 F)	108 years	48 of 100 (Notable)
17 December 2021	Fayetteville Drake Fld, US	daily rain	80.3 mm (3.2 in)	48.3 mm (1.9 in)	26 years	48 of 100 (Notable)
17 December 2021	Otteroy, NO	daily rain	68.7 mm (2.7 in)	30.9 mm (1.2 in)	18 years	47 of 100 (Notable)
17 December 2021	Lawrence, US	daily high min	6.7 C (44.1 F)	4.5 C (8.1 F)	126 years	47 of 100 (Notable)
17 December 2021	Oshima, JP	daily rain	81.0 mm (3.2 in)	46.0 mm (1.8 in)	56 years	46 of 100 (Notable)
17 December 2021	Overhalla - Unnset, NO	monthly rain	86.0 mm (3.4 in)	18.0 mm (0.7 in)	31 years	46 of 100 (Notable)
17 December 2021	Gravette, US	daily rain	58.7 mm (2.3 in)	13.7 mm (0.5 in)	92 years	46 of 100 (Notable)
17 December 2021	Romney 1 SW, US	daily high max	23.9 C (75.0 F)	5.6 C (10.1 F)	92 years	46 of 100 (Notable)
17 December 2021	Yamba Pilot Station, AU	daily rain	74.8 mm (2.9 in)	8.8 mm (0.35 in)	128 years	45 of 100 (Notable)
17 December 2021	Boonton 1 SE, US	daily high min	8.9 C (48.0 F)	4.5 C (8.1 F)	92 years	45 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 908 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 2021-12-17: 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 25	687
25 to 50	21
50 to 75	3
75 to 100	4
100 to 125	1
125 to 150	1
150 to 175	0
175 to 200	2