Weather Records on 18 December 1921

123 weather records were set or tied worldwide on 18 December 1921. Highest significance: Woodstock, CA.

Key Facts for 18 December 1921

On 18 December 1921, 123 weather records were set or tied at long-record stations worldwide.
65 were record highs and 12 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 123 daily.
Woodstock set a daily record precipitation of 45.5 mm (1.8 in) on 18 December 1921.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 482 records.

Record Map

123 stations

123 station records on 18 December 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 December 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Woodstock	Canada	Record daily precipitation	45.5 mm (1.8 in)	58 of 100 (Notable)
Beatrice	Canada	Record daily precipitation	53.3 mm (2.1 in)	56 of 100 (Notable)
Hamilton	Canada	Record daily precipitation	43.2 mm (1.7 in)	56 of 100 (Notable)
Paris	Canada	Record daily precipitation	41.9 mm (1.6 in)	47 of 100 (Notable)
Alton	Canada	Record daily precipitation	41.9 mm (1.6 in)	46 of 100 (Notable)
San Diego Wbo	United States	Record daily precipitation	49.0 mm (1.9 in)	40 of 100 (Notable)
Port Dover	Canada	Record daily snowfall	16.5 cm (6.5 in)	38 of 100 (Notable)
Toronto Deer Park	Canada	Record daily precipitation	35.8 mm (1.4 in)	38 of 100 (Notable)
Winnemucca AP	United States	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Stratford	Canada	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
Quebec	Canada	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Sotchi	Russia	Record daily precipitation	62.3 mm (2.5 in)	29 of 100 (Routine)
Kingston Queens U	Canada	Record daily precipitation	25.1 mm (1.0 in)	28 of 100 (Routine)
Camden 3 W	United States	Record daily precipitation	27.9 mm (1.1 in)	25 of 100 (Routine)
Ottawa	Canada	Record high maximum temperature	6.7 C (44.1 F)	24 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	10.0 C (50.0 F)	22 of 100 (Routine)
Chatham	Canada	Record high maximum temperature	10.6 C (51.1 F)	21 of 100 (Routine)
Concord	United States	Record high maximum temperature	10.6 C (51.1 F)	21 of 100 (Routine)
Anticosti SW Point	Canada	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Barrie	Canada	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
North Bruce	Canada	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Peterborough	Canada	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Port Dover	Canada	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Clontarf	Canada	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Karumba Pilot Station	Australia	Record daily precipitation	53.3 mm (2.1 in)	20 of 100 (Routine)
Ottawa Cda	Canada	Record daily precipitation	26.4 mm (1.0 in)	20 of 100 (Routine)
Toronto	Canada	Record high maximum temperature	9.4 C (48.9 F)	20 of 100 (Routine)
Montreal McGill	Canada	Record high maximum temperature	8.9 C (48.0 F)	20 of 100 (Routine)
Portland	United States	Record high maximum temperature	10.6 C (51.1 F)	19 of 100 (Routine)
Harrisburg - Coop	United States	Record high maximum temperature	15.0 C (59.0 F)	19 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	15.0 C (59.0 F)	19 of 100 (Routine)
Barrie	Canada	Record high maximum temperature	7.2 C (45.0 F)	18 of 100 (Routine)
Quebec	Canada	Record high minimum temperature	-2.2 C (28.0 F)	18 of 100 (Routine)
Brome	Canada	Record high maximum temperature	11.7 C (53.1 F)	18 of 100 (Routine)
Middletown 4 W	United States	Record high minimum temperature	4.4 C (39.9 F)	18 of 100 (Routine)
Lake Cochituate	United States	Record high minimum temperature	6.7 C (44.1 F)	18 of 100 (Routine)
Portage Wwtp	United States	Record daily precipitation	7.1 mm (0.28 in)	18 of 100 (Routine)
New Westminster	Canada	Record low maximum temperature	-3.3 C (26.1 F)	17 of 100 (Routine)
Kingston Queens U	Canada	Record high maximum temperature	10.6 C (51.1 F)	17 of 100 (Routine)
Guelph Oac	Canada	Record high maximum temperature	9.4 C (48.9 F)	17 of 100 (Routine)
London South	Canada	Record daily snowfall	10.2 cm (4.0 in)	17 of 100 (Routine)
Halifax	Canada	Record high minimum temperature	3.3 C (37.9 F)	17 of 100 (Routine)
Concord	United States	Record high minimum temperature	3.3 C (37.9 F)	17 of 100 (Routine)
Renfrew	Canada	Record high minimum temperature	1.1 C (34.0 F)	16 of 100 (Routine)
Alton	Canada	Record high maximum temperature	8.3 C (46.9 F)	16 of 100 (Routine)
Fredericton Unb	Canada	Record high minimum temperature	2.2 C (36.0 F)	16 of 100 (Routine)
Yarmouth	Canada	Record high minimum temperature	5.6 C (42.1 F)	16 of 100 (Routine)
Freiburg	Germany	Record high minimum temperature	5.9 C (42.6 F)	16 of 100 (Routine)
Portland	United States	Record high minimum temperature	3.3 C (37.9 F)	16 of 100 (Routine)
Plymouth	United States	Record high maximum temperature	9.4 C (48.9 F)	16 of 100 (Routine)
Astoria	United States	Record low maximum temperature	2.8 C (37.0 F)	16 of 100 (Routine)
Clarion 3 SW	United States	Record daily precipitation	21.3 mm (0.8 in)	16 of 100 (Routine)
Olympia Priest Pt Park	United States	Record low maximum temperature	-1.1 C (30.0 F)	16 of 100 (Routine)
Fort Chipewyan	Canada	Record low maximum temperature	-31.1 C (-24.0 F)	15 of 100 (Routine)
Beatrice	Canada	Record high maximum temperature	6.7 C (44.1 F)	15 of 100 (Routine)
Lucknow	Canada	Record daily precipitation	25.4 mm (1.0 in)	15 of 100 (Routine)
Stoney Creek	Canada	Record daily snowfall	10.2 cm (4.0 in)	15 of 100 (Routine)
Haliburton A	Canada	Record high maximum temperature	7.2 C (45.0 F)	15 of 100 (Routine)
Anticosti SW Point	Canada	Record daily snowfall	14.0 cm (5.5 in)	15 of 100 (Routine)
Saint John	Canada	Record high minimum temperature	6.1 C (43.0 F)	15 of 100 (Routine)

Counts by Type and Timescale

123 records

Records set or tied on 18 December 1921 by type: Highest daily maximum 44, Lowest daily maximum 8, Highest daily minimum 21, Lowest daily minimum 4, Heaviest daily rainfall 35, Heaviest daily snowfall 11.

Records on 18 December 1921 by type
Record type	Records
Highest daily maximum	44
Lowest daily maximum	8
Highest daily minimum	21
Lowest daily minimum	4
Heaviest daily rainfall	35
Heaviest daily snowfall	11
Deepest snow cover	0

Records on 18 December 1921 by timescale: all-time 0, monthly 0, daily 123.

How Much Records Were Beaten By

108 broken records

Margins by which the 108 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.0. Ties are not counted.

Top 20 by Significance

18 December 1921

Top 20 records on 18 December 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1921	Woodstock, CA	daily rain	45.5 mm (1.8 in)	30.3 mm (1.2 in)	44 years	58 of 100 (Notable)
18 December 1921	Beatrice, CA	daily rain	53.3 mm (2.1 in)	38.1 mm (1.5 in)	41 years	56 of 100 (Notable)
18 December 1921	Hamilton, CA	daily rain	43.2 mm (1.7 in)	33.0 mm (1.3 in)	37 years	56 of 100 (Notable)
18 December 1921	Paris, CA	daily rain	41.9 mm (1.6 in)	27.9 mm (1.1 in)	23 years	47 of 100 (Notable)
18 December 1921	Alton, CA	daily rain	41.9 mm (1.6 in)	34.3 mm (1.4 in)	12 years	46 of 100 (Notable)
18 December 1921	San Diego Wbo, US	daily rain	49.0 mm (1.9 in)	21.3 mm (0.8 in)	43 years	40 of 100 (Notable)
18 December 1921	Port Dover, CA	daily snowfall	16.5 cm (6.5 in)	9.1 cm (3.6 in)	37 years	38 of 100 (Notable)
18 December 1921	Toronto Deer Park, CA	daily rain	35.8 mm (1.4 in)	24.4 mm (1.0 in)	12 years	38 of 100 (Notable)
18 December 1921	Winnemucca AP, US	daily snowfall	12.7 cm (5.0 in)	10.2 cm (4.0 in)	21 years	38 of 100 (Notable)
18 December 1921	Stratford, CA	daily rain	35.6 mm (1.4 in)	20.4 mm (0.8 in)	0 years	32 of 100 (Routine)
18 December 1921	Quebec, CA	daily rain	27.9 mm (1.1 in)	11.6 mm (0.5 in)	32 years	32 of 100 (Routine)
18 December 1921	Sotchi, RU	daily rain	62.3 mm (2.5 in)	28.8 mm (1.1 in)	32 years	29 of 100 (Routine)
18 December 1921	Kingston Queens U, CA	daily rain	25.1 mm (1.0 in)	6.3 mm (0.25 in)	48 years	28 of 100 (Routine)
18 December 1921	Camden 3 W, US	daily rain	27.9 mm (1.1 in)	19.8 mm (0.8 in)	6 years	25 of 100 (Routine)
18 December 1921	Ottawa, CA	daily high max	6.7 C (44.1 F)	3.4 C (6.1 F)	47 years	24 of 100 (Routine)
18 December 1921	Fredericton Unb, CA	daily high max	10.0 C (50.0 F)	6.1 C (11.0 F)	26 years	22 of 100 (Routine)
18 December 1921	Chatham, CA	daily high max	10.6 C (51.1 F)	5.6 C (10.1 F)	26 years	21 of 100 (Routine)
18 December 1921	Concord, US	daily high max	10.6 C (51.1 F)	1.7 C (3.1 F)	47 years	21 of 100 (Routine)
18 December 1921	Anticosti SW Point, CA	daily rain	23.1 mm (0.9 in)	10.4 mm (0.4 in)	32 years	20 of 100 (Routine)
18 December 1921	Barrie, CA	daily rain	15.2 mm (0.6 in)	7.6 mm (0.30 in)	34 years	20 of 100 (Routine)

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 1921

Records set or tied on this calendar date in each year from 1793 to 1921. 1921 had 123 records.

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

Records on 12-18 in each year
Year	Records
1793	1
1796	1
1805	1
1814	1
1825	1
1846	1
1849	1
1852	2
1858	1
1859	4
1862	2
1864	1
1868	1
1873	1
1875	1
1876	2
1878	1
1881	2
1882	1
1884	2
1886	1
1887	1
1888	1
1889	4
1890	5
1892	4
1894	8
1895	1
1897	4
1898	9
1899	3
1900	2
1901	6
1902	33
1903	11
1904	25
1905	3
1906	21
1907	15
1908	16
1909	18
1910	19
1911	9
1912	33
1913	38
1914	20
1915	28
1916	57
1917	62
1918	21
1919	117
1920	77
1921	123
1922	108
1923	378
1924	480
1925	74
1926	173
1927	151
1928	165
1929	366
1930	230
1931	360
1932	353
1933	506
1934	209
1935	138
1936	466
1937	459
1938	185
1939	900
1940	242
1941	213
1942	281
1943	419
1944	191
1945	598
1946	199
1947	266
1948	354
1949	561
1950	289
1951	867
1952	450
1953	373
1954	507
1955	611
1956	333
1957	901
1958	524
1959	477
1960	477
1961	885
1962	759
1963	571
1964	840
1965	402
1966	644
1967	1,105
1968	488
1969	376
1970	502
1971	387
1972	375
1973	1,008
1974	229
1975	625
1976	459
1977	992
1978	946
1979	1,087
1980	772
1981	1,362
1982	537
1983	2,014
1984	1,439
1985	1,384
1986	875
1987	1,505
1988	1,061
1989	1,818
1990	1,367
1991	756
1992	1,045
1993	697
1994	643
1995	1,065
1996	1,833
1997	1,195
1998	863
1999	923
2000	1,572
2001	906
2002	1,437
2003	987
2004	506
2005	987
2006	1,167
2007	746
2008	1,014
2009	1,253
2010	1,322
2011	697
2012	729
2013	513
2014	556
2015	1,254
2016	1,821
2017	516
2018	464
2019	679
2020	326
2021	762
2022	536
2023	1,293
2024	780
2025	994

Download the Data

Data for records on 1921-12-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	94
20 to 40	12
40 to 60	0
60 to 80	0
80 to 100	1
100 to 120	1