Weather Records on 17 December 1951

773 weather records were set or tied worldwide on 17 December 1951. Highest significance: Simcoe, CA.

Key Facts for 17 December 1951

On 17 December 1951, 773 weather records were set or tied at long-record stations worldwide.
35 were record highs and 407 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 33 monthly and 738 daily.
Simcoe set a daily record snowfall of 25.4 cm (10.0 in) on 17 December 1951.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 461 records.

Record Map

773 stations

773 station records on 17 December 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 December 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Simcoe	Canada	Record daily snowfall	25.4 cm (10.0 in)	58 of 100 (Notable)
Marengo	United States	Record daily snowfall	17.8 cm (7.0 in)	53 of 100 (Notable)
Kekaha 944	United States	Record daily precipitation	152.1 mm (6.0 in)	52 of 100 (Notable)
Davenport L&D 15	United States	Record daily snowfall	12.4 cm (4.9 in)	51 of 100 (Notable)
Harrison	United States	Record snow depth	35.6 cm (14.0 in)	49 of 100 (Notable)
Ai-Petri	Ukraine	Record daily precipitation	88.0 mm (3.5 in)	46 of 100 (Notable)
Clinton #1	United States	Record daily snowfall	15.2 cm (6.0 in)	45 of 100 (Notable)
Estancia	Brazil	Record daily precipitation	65.2 mm (2.6 in)	44 of 100 (Notable)
Lihue 1020	United States	Record daily precipitation	109.5 mm (4.3 in)	44 of 100 (Notable)
Kelowna	Canada	Record daily snowfall	20.8 cm (8.2 in)	41 of 100 (Notable)
Teresina	Brazil	Record daily precipitation	92.0 mm (3.6 in)	40 of 100 (Notable)
St Thomas	Canada	Record daily snowfall	19.1 cm (7.5 in)	40 of 100 (Notable)
Mt Carroll	United States	Record daily snowfall	15.2 cm (6.0 in)	40 of 100 (Notable)
Watertown	United States	Record daily precipitation	68.6 mm (2.7 in)	40 of 100 (Notable)
Tappen	Canada	Record daily snowfall	38.9 cm (15.3 in)	39 of 100 (Notable)
Frankfort Disposal	United States	Record daily snowfall	15.2 cm (6.0 in)	39 of 100 (Notable)
Rock Rapids	United States	Record daily snowfall	7.6 cm (3.0 in)	38 of 100 (Notable)
Milwaukee Wb City	United States	Record daily snowfall	14.0 cm (5.5 in)	38 of 100 (Notable)
Algona	United States	Record daily snowfall	8.1 cm (3.2 in)	37 of 100 (Notable)
Denman Island	Canada	Record daily precipitation	72.6 mm (2.9 in)	36 of 100 (Notable)
Tipton	United States	Record daily snowfall	12.7 cm (5.0 in)	36 of 100 (Notable)
Watertown	United States	Record daily snowfall	86.4 cm (34.0 in)	36 of 100 (Notable)
Mana 1026	United States	Record daily precipitation	71.9 mm (2.8 in)	36 of 100 (Notable)
Kingston Queens U	Canada	Record daily snowfall	12.7 cm (5.0 in)	35 of 100 (Notable)
Streator 2SE	United States	Record daily snowfall	11.4 cm (4.5 in)	35 of 100 (Notable)
Hampton	United States	Record daily snowfall	6.6 cm (2.6 in)	34 of 100 (Routine)
Alexandria	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Faulkton	United States	Record snow depth	22.9 cm (9.0 in)	34 of 100 (Routine)
Tobias Barreto	Brazil	Record daily precipitation	48.7 mm (1.9 in)	33 of 100 (Routine)
Freeport	United States	Record daily snowfall	15.2 cm (6.0 in)	33 of 100 (Routine)
Marengo	United States	Record snow depth	25.4 cm (10.0 in)	33 of 100 (Routine)
Mason City	United States	Record daily snowfall	9.7 cm (3.8 in)	33 of 100 (Routine)
Defiance	United States	Record low maximum temperature	-15.6 C (3.9 F)	33 of 100 (Routine)
Armour	United States	Record daily snowfall	11.4 cm (4.5 in)	33 of 100 (Routine)
Vermillion 2 SE	United States	Record daily snowfall	10.2 cm (4.0 in)	33 of 100 (Routine)
Monte Santo	Brazil	Record daily precipitation	62.5 mm (2.5 in)	32 of 100 (Routine)
Bamfield	Canada	Record daily precipitation	128.3 mm (5.1 in)	32 of 100 (Routine)
Chambersburg 1 ESE	United States	Record low minimum temperature	-20.6 C (-5.1 F)	32 of 100 (Routine)
Fairfax	United States	Record snow depth	38.1 cm (15.0 in)	32 of 100 (Routine)
Bathurst Gaol	Australia	Record low minimum temperature	4.4 C (39.9 F)	31 of 100 (Routine)
Morrison	United States	Record snow depth	35.6 cm (14.0 in)	31 of 100 (Routine)
Irara	Brazil	Record daily precipitation	47.9 mm (1.9 in)	30 of 100 (Routine)
Vernon	Canada	Record daily snowfall	19.1 cm (7.5 in)	30 of 100 (Routine)
Allison	United States	Record daily snowfall	12.7 cm (5.0 in)	30 of 100 (Routine)
Glenwood 3SW	United States	Record daily snowfall	7.6 cm (3.0 in)	30 of 100 (Routine)
Storm Lake	United States	Record daily snowfall	7.6 cm (3.0 in)	30 of 100 (Routine)
Atkinson 3SW	United States	Record snow depth	30.5 cm (12.0 in)	30 of 100 (Routine)
Parkston 8 ENE	United States	Record daily snowfall	7.6 cm (3.0 in)	30 of 100 (Routine)
Palestine	United States	Record snow depth	12.7 cm (5.0 in)	29 of 100 (Routine)
Cambridge City 3 N	United States	Record low maximum temperature	-14.4 C (6.1 F)	29 of 100 (Routine)
Rushville	United States	Record low maximum temperature	-15.0 C (5.0 F)	29 of 100 (Routine)
Keosauqua	United States	Record daily snowfall	5.1 cm (2.0 in)	29 of 100 (Routine)
Maquoketa	United States	Record daily snowfall	10.2 cm (4.0 in)	29 of 100 (Routine)
New Hampton	United States	Record daily snowfall	10.2 cm (4.0 in)	29 of 100 (Routine)
Keedysville	United States	Record low minimum temperature	-23.3 C (-9.9 F)	29 of 100 (Routine)
Carlisle	United States	Record low minimum temperature	-25.0 C (-13.0 F)	29 of 100 (Routine)
Simao Dias (Anapolis)	Brazil	Record daily precipitation	25.0 mm (1.0 in)	28 of 100 (Routine)
Ottawa 4SW	United States	Record snow depth	22.9 cm (9.0 in)	28 of 100 (Routine)
Rockford	United States	Record snow depth	20.3 cm (8.0 in)	28 of 100 (Routine)
Columbus	United States	Record low maximum temperature	-12.8 C (9.0 F)	28 of 100 (Routine)

Counts by Type and Timescale

773 records

Records set or tied on 17 December 1951 by type: Highest daily maximum 9, Lowest daily maximum 138, Highest daily minimum 26, Lowest daily minimum 269, Heaviest daily rainfall 140, Heaviest daily snowfall 140, Deepest snow cover 51.

Records on 17 December 1951 by type
Record type	Records
Highest daily maximum	9
Lowest daily maximum	138
Highest daily minimum	26
Lowest daily minimum	269
Heaviest daily rainfall	140
Heaviest daily snowfall	140
Deepest snow cover	51

Records on 17 December 1951 by timescale: all-time 2, monthly 33, daily 738.

How Much Records Were Beaten By

631 broken records

Margins by which the 631 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 305.0. Ties are not counted.

Top 20 by Significance

17 December 1951

Top 20 records on 17 December 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 December 1951	Simcoe, CA	daily snowfall	25.4 cm (10.0 in)	17.8 cm (7.0 in)	66 years	58 of 100 (Notable)
17 December 1951	Marengo, US	daily snowfall	17.8 cm (7.0 in)	11.4 cm (4.5 in)	53 years	53 of 100 (Notable)
17 December 1951	Kekaha 944, US	daily rain	152.1 mm (6.0 in)	115.3 mm (4.5 in)	26 years	52 of 100 (Notable)
17 December 1951	Davenport L&D 15, US	daily snowfall	12.4 cm (4.9 in)	9.9 cm (3.9 in)	46 years	51 of 100 (Notable)
17 December 1951	Harrison, US	daily snow depth	35.6 cm (14.0 in)	30.5 cm (12.0 in)	29 years	49 of 100 (Notable)
17 December 1951	Ai-Petri, UA	daily rain	88.0 mm (3.5 in)	48.5 mm (1.9 in)	12 years	46 of 100 (Notable)
17 December 1951	Clinton #1, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	54 years	45 of 100 (Notable)
17 December 1951	Estancia, BR	daily rain	65.2 mm (2.6 in)	57.2 mm (2.3 in)	4 years	44 of 100 (Notable)
17 December 1951	Lihue 1020, US	daily rain	109.5 mm (4.3 in)	68.4 mm (2.7 in)	1 year	44 of 100 (Notable)
17 December 1951	Kelowna, CA	daily snowfall	20.8 cm (8.2 in)	14.4 cm (5.7 in)	24 years	41 of 100 (Notable)
17 December 1951	Teresina, BR	daily rain	92.0 mm (3.6 in)	52.0 mm (2.0 in)	30 years	40 of 100 (Notable)
17 December 1951	St Thomas, CA	daily snowfall	19.1 cm (7.5 in)	6.4 cm (2.5 in)	59 years	40 of 100 (Notable)
17 December 1951	Mt Carroll, US	daily snowfall	15.2 cm (6.0 in)	11.4 cm (4.5 in)	29 years	40 of 100 (Notable)
17 December 1951	Watertown, US	monthly rain	68.6 mm (2.7 in)	7.6 mm (0.30 in)	48 years	40 of 100 (Notable)
17 December 1951	Tappen, CA	all-time snowfall	38.9 cm (15.3 in)	5.9 cm (2.3 in)	16 years	39 of 100 (Notable)
17 December 1951	Frankfort Disposal, US	daily snowfall	15.2 cm (6.0 in)	11.1 cm (4.4 in)	28 years	39 of 100 (Notable)
17 December 1951	Rock Rapids, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	57 years	38 of 100 (Notable)
17 December 1951	Milwaukee Wb City, US	daily snowfall	14.0 cm (5.5 in)	5.1 cm (2.0 in)	64 years	38 of 100 (Notable)
17 December 1951	Algona, US	daily snowfall	8.1 cm (3.2 in)	8.1 cm (3.2 in)	57 years	37 of 100 (Notable)
17 December 1951	Denman Island, CA	daily rain	72.6 mm (2.9 in)	34.2 mm (1.3 in)	28 years	36 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 1951

Records set or tied on this calendar date in each year from 1793 to 1951. 1951 had 773 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 1951-12-17: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 50	563
50 to 100	47
100 to 150	16
150 to 200	3
200 to 250	0
250 to 300	1
300 to 350	1