Weather Records on 11 December 1944

407 weather records were set or tied worldwide on 11 December 1944. Highest significance: Toronto Agincourt, CA.

Key Facts for 11 December 1944

On 11 December 1944, 407 weather records were set or tied at long-record stations worldwide.
36 were record highs and 40 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 16 monthly and 388 daily.
Toronto Agincourt set an all-time record daily snowfall of 45.7 cm (18.0 in) on 11 December 1944.
Across 154 earlier years (1796 to 2025) the same calendar date averaged 473 records.

Record Map

407 stations

407 station records on 11 December 1944 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 December 1944: highest significance records shown on the map
Station	Country	Type	Value	Significance
Toronto Agincourt	Canada	Record daily snowfall	45.7 cm (18.0 in)	66 of 100 (Major)
Toronto	Canada	Record daily snowfall	48.3 cm (19.0 in)	65 of 100 (Major)
Lindsay	Canada	Record daily snowfall	30.5 cm (12.0 in)	64 of 100 (Major)
Tipton	United States	Record daily snowfall	27.9 cm (11.0 in)	60 of 100 (Major)
Lakefield	Canada	Record daily snowfall	33.0 cm (13.0 in)	59 of 100 (Notable)
Lakefield	Canada	Record daily precipitation	33.0 mm (1.3 in)	56 of 100 (Notable)
Mannington 1 N	United States	Record daily snowfall	23.1 cm (9.1 in)	52 of 100 (Notable)
Toronto	Canada	Record daily precipitation	48.3 mm (1.9 in)	51 of 100 (Notable)
St Marys	United States	Record daily precipitation	46.0 mm (1.8 in)	50 of 100 (Notable)
Chatham 2	Canada	Record daily snowfall	22.9 cm (9.0 in)	48 of 100 (Notable)
Marengo	United States	Record snow depth	22.9 cm (9.0 in)	48 of 100 (Notable)
East Lansing Exp Farm	United States	Record daily snowfall	19.1 cm (7.5 in)	47 of 100 (Notable)
Morgantown 1	United States	Record daily snowfall	15.2 cm (6.0 in)	47 of 100 (Notable)
Ridgetown	Canada	Record daily snowfall	22.9 cm (9.0 in)	46 of 100 (Notable)
St Catharines	Canada	Record daily snowfall	41.9 cm (16.5 in)	45 of 100 (Notable)
Effingham 3SW	United States	Record snow depth	10.2 cm (4.0 in)	44 of 100 (Notable)
Stratford	Canada	Record daily snowfall	21.6 cm (8.5 in)	43 of 100 (Notable)
Walnut	United States	Record snow depth	22.9 cm (9.0 in)	43 of 100 (Notable)
Lindsay	Canada	Record daily precipitation	30.5 mm (1.2 in)	42 of 100 (Notable)
Morrisonville 4 SE	United States	Record snow depth	22.9 cm (9.0 in)	42 of 100 (Notable)
Buckhannon	United States	Record daily snowfall	30.5 cm (12.0 in)	42 of 100 (Notable)
Coldwater St School	United States	Record daily snowfall	16.5 cm (6.5 in)	41 of 100 (Notable)
Lewisburg 3 N	United States	Record daily precipitation	35.6 mm (1.4 in)	40 of 100 (Notable)
Howell Wwtp	United States	Record daily snowfall	22.9 cm (9.0 in)	39 of 100 (Notable)
Jamestown	United States	Record daily snowfall	24.4 cm (9.6 in)	39 of 100 (Notable)
Cadiz	United States	Record daily snowfall	18.5 cm (7.3 in)	39 of 100 (Notable)
Tiffin	United States	Record daily snowfall	15.2 cm (6.0 in)	39 of 100 (Notable)
Bancroft	Canada	Record daily snowfall	20.3 cm (8.0 in)	38 of 100 (Notable)
Morrison	United States	Record snow depth	25.4 cm (10.0 in)	38 of 100 (Notable)
Mt Carroll	United States	Record snow depth	35.6 cm (14.0 in)	38 of 100 (Notable)
Mt Pleasant 1 SW	United States	Record daily snowfall	22.9 cm (9.0 in)	38 of 100 (Notable)
New Martinsville 4 NNE	United States	Record daily snowfall	14.7 cm (5.8 in)	38 of 100 (Notable)
St Catharines	Canada	Record daily precipitation	41.9 mm (1.6 in)	37 of 100 (Notable)
Guelph Oac	Canada	Record daily snowfall	22.9 cm (9.0 in)	37 of 100 (Notable)
Tipton	United States	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Hillsdale	United States	Record daily snowfall	15.2 cm (6.0 in)	37 of 100 (Notable)
Wallaceburg	Canada	Record daily snowfall	11.4 cm (4.5 in)	36 of 100 (Notable)
Hillsboro	United States	Record snow depth	25.4 cm (10.0 in)	36 of 100 (Notable)
Ironton	United States	Record daily snowfall	11.4 cm (4.5 in)	36 of 100 (Notable)
White Sulphur Springs	United States	Record daily snowfall	27.4 cm (10.8 in)	36 of 100 (Notable)
Ottawa 4SW	United States	Record snow depth	20.3 cm (8.0 in)	35 of 100 (Notable)
Harbor Beach 1 SSE	United States	Record daily snowfall	10.9 cm (4.3 in)	35 of 100 (Notable)
Hillsboro	United States	Record daily snowfall	12.7 cm (5.0 in)	35 of 100 (Notable)
Goderich	Canada	Record daily snowfall	12.7 cm (5.0 in)	34 of 100 (Routine)
Huntington	United States	Record daily snowfall	12.7 cm (5.0 in)	34 of 100 (Routine)
Springfield Abraham Lincoln Ca	United States	Record snow depth	17.8 cm (7.0 in)	34 of 100 (Routine)
Pana	United States	Record snow depth	17.8 cm (7.0 in)	33 of 100 (Routine)
Angola	United States	Record daily snowfall	12.7 cm (5.0 in)	33 of 100 (Routine)
Millport 4 NE	United States	Record daily snowfall	17.8 cm (7.0 in)	33 of 100 (Routine)
Napoleon	United States	Record daily snowfall	17.8 cm (7.0 in)	33 of 100 (Routine)
Johnstown	United States	Record daily snowfall	18.3 cm (7.2 in)	33 of 100 (Routine)
Fort Simpson	Canada	Record high maximum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Harkerville (Bos)	South Africa	Record daily precipitation	34.5 mm (1.4 in)	32 of 100 (Routine)
Carlinville	United States	Record snow depth	22.9 cm (9.0 in)	32 of 100 (Routine)
Dixon Wwtp	United States	Record snow depth	22.9 cm (9.0 in)	32 of 100 (Routine)
Ryan	United States	Record daily precipitation	32.0 mm (1.3 in)	32 of 100 (Routine)
Windsor	United States	Record snow depth	17.8 cm (7.0 in)	31 of 100 (Routine)
Lake Mills Wwtp	United States	Record daily snowfall	12.7 cm (5.0 in)	31 of 100 (Routine)
Brockville	Canada	Record daily snowfall	11.4 cm (4.5 in)	30 of 100 (Routine)
Bluefield 2 NW	United States	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)

Counts by Type and Timescale

407 records

Records set or tied on 11 December 1944 by type: Highest daily maximum 22, Lowest daily maximum 18, Highest daily minimum 14, Lowest daily minimum 22, Heaviest daily rainfall 165, Heaviest daily snowfall 99, Deepest snow cover 67.

Records on 11 December 1944 by type
Record type	Records
Highest daily maximum	22
Lowest daily maximum	18
Highest daily minimum	14
Lowest daily minimum	22
Heaviest daily rainfall	165
Heaviest daily snowfall	99
Deepest snow cover	67

Records on 11 December 1944 by timescale: all-time 3, monthly 16, daily 388.

How Much Records Were Beaten By

350 broken records

Margins by which the 350 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 432.0. Ties are not counted.

Top 20 by Significance

11 December 1944

Top 20 records on 11 December 1944 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 December 1944	Toronto Agincourt, CA	all-time snowfall	45.7 cm (18.0 in)	12.7 cm (5.0 in)	46 years	66 of 100 (Major)
11 December 1944	Toronto, CA	all-time snowfall	48.3 cm (19.0 in)	2.6 cm (1.0 in)	98 years	65 of 100 (Major)
11 December 1944	Lindsay, CA	daily snowfall	30.5 cm (12.0 in)	17.8 cm (7.0 in)	61 years	64 of 100 (Major)
11 December 1944	Tipton, US	daily snowfall	27.9 cm (11.0 in)	27.9 cm (11.0 in)	50 years	60 of 100 (Major)
11 December 1944	Lakefield, CA	daily snowfall	33.0 cm (13.0 in)	22.8 cm (9.0 in)	40 years	59 of 100 (Notable)
11 December 1944	Lakefield, CA	daily rain	33.0 mm (1.3 in)	21.6 mm (0.9 in)	46 years	56 of 100 (Notable)
11 December 1944	Mannington 1 N, US	monthly snowfall	23.1 cm (9.1 in)	7.9 cm (3.1 in)	29 years	52 of 100 (Notable)
11 December 1944	Toronto, CA	daily rain	48.3 mm (1.9 in)	17.8 mm (0.7 in)	44 years	51 of 100 (Notable)
11 December 1944	St Marys, US	daily rain	46.0 mm (1.8 in)	32.8 mm (1.3 in)	26 years	50 of 100 (Notable)
11 December 1944	Chatham 2, CA	daily snowfall	22.9 cm (9.0 in)	15.3 cm (6.0 in)	48 years	48 of 100 (Notable)
11 December 1944	Marengo, US	daily snow depth	22.9 cm (9.0 in)	12.7 cm (5.0 in)	48 years	48 of 100 (Notable)
11 December 1944	East Lansing Exp Farm, US	daily snowfall	19.1 cm (7.5 in)	13.8 cm (5.4 in)	18 years	47 of 100 (Notable)
11 December 1944	Morgantown 1, US	daily snowfall	15.2 cm (6.0 in)	12.7 cm (5.0 in)	48 years	47 of 100 (Notable)
11 December 1944	Ridgetown, CA	daily snowfall	22.9 cm (9.0 in)	15.3 cm (6.0 in)	12 years	46 of 100 (Notable)
11 December 1944	St Catharines, CA	monthly snowfall	41.9 cm (16.5 in)	13.2 cm (5.2 in)	7 years	45 of 100 (Notable)
11 December 1944	Effingham 3SW, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	42 years	44 of 100 (Notable)
11 December 1944	Stratford, CA	daily snowfall	21.6 cm (8.5 in)	14.0 cm (5.5 in)	18 years	43 of 100 (Notable)
11 December 1944	Walnut, US	daily snow depth	22.9 cm (9.0 in)	12.7 cm (5.0 in)	35 years	43 of 100 (Notable)
11 December 1944	Lindsay, CA	daily rain	30.5 mm (1.2 in)	12.5 mm (0.5 in)	44 years	42 of 100 (Notable)
11 December 1944	Morrisonville 4 SE, US	daily snow depth	22.9 cm (9.0 in)	15.3 cm (6.0 in)	27 years	42 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

1796 to 1944

Records set or tied on this calendar date in each year from 1796 to 1944. 1944 had 407 records.

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

Records on 12-11 in each year
Year	Records
1796	2
1808	2
1815	2
1825	2
1841	1
1852	1
1855	2
1862	1
1868	1
1869	3
1871	4
1872	1
1876	2
1877	1
1878	2
1879	4
1880	2
1882	3
1886	1
1887	1
1889	1
1891	3
1892	2
1893	3
1894	1
1895	4
1897	2
1898	14
1899	5
1900	4
1901	5
1902	6
1903	2
1904	28
1905	15
1906	12
1907	30
1908	18
1909	7
1910	31
1911	49
1912	36
1913	8
1914	13
1915	93
1916	55
1917	103
1918	32
1919	40
1920	58
1921	49
1922	143
1923	88
1924	84
1925	81
1926	77
1927	232
1928	111
1929	345
1930	72
1931	762
1932	696
1933	260
1934	480
1935	290
1936	357
1937	839
1938	231
1939	626
1940	302
1941	353
1942	263
1943	196
1944	407
1945	234
1946	717
1947	342
1948	153
1949	1,201
1950	463
1951	261
1952	923
1953	157
1954	492
1955	312
1956	300
1957	517
1958	985
1959	322
1960	746
1961	1,300
1962	723
1963	604
1964	542
1965	1,216
1966	525
1967	945
1968	543
1969	587
1970	617
1971	900
1972	1,514
1973	334
1974	313
1975	454
1976	380
1977	1,182
1978	678
1979	847
1980	522
1981	949
1982	657
1983	971
1984	1,013
1985	1,471
1986	561
1987	639
1988	850
1989	584
1990	747
1991	1,102
1992	1,357
1993	749
1994	1,243
1995	1,837
1996	1,307
1997	1,203
1998	1,012
1999	769
2000	1,584
2001	626
2002	1,139
2003	646
2004	1,166
2005	816
2006	858
2007	1,613
2008	1,312
2009	1,091
2010	1,284
2011	416
2012	618
2013	737
2014	893
2015	1,183
2016	489
2017	670
2018	353
2019	442
2020	517
2021	1,175
2022	679
2023	814
2024	539
2025	1,691

Download the Data

Data for records on 1944-12-11: 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).

Histogram of margins by which records were beaten on 11 December 1944
Margin	Records
0 to 100	307
100 to 200	38
200 to 300	4
300 to 400	0
400 to 500	1