Weather Records on 17 December 1964

1,239 weather records were set or tied worldwide on 17 December 1964. Highest significance: Atil, MX.

Key Facts for 17 December 1964

On 17 December 1964, 1,239 weather records were set or tied at long-record stations worldwide.
27 were record highs and 1,063 were record lows, counting maximum and minimum temperature.
By timescale, 27 were all-time records, 146 monthly and 1,066 daily.
Atil set a monthly record daily precipitation of 89.9 mm (3.5 in) on 17 December 1964.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 458 records.

Record Map

1,239 stations

1,239 station records on 17 December 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 December 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Atil	Mexico	Record daily precipitation	89.9 mm (3.5 in)	53 of 100 (Notable)
Rienzi	South Africa	Record daily precipitation	64.5 mm (2.5 in)	51 of 100 (Notable)
Hamilton	United States	Record low maximum temperature	-25.0 C (-13.0 F)	48 of 100 (Notable)
Blaine	United States	Record low maximum temperature	-6.7 C (19.9 F)	46 of 100 (Notable)
Coupeville 1 S	United States	Record low minimum temperature	-13.3 C (8.1 F)	46 of 100 (Notable)
Port Angeles	United States	Record low minimum temperature	-13.3 C (8.1 F)	46 of 100 (Notable)
Anacortes	United States	Record low minimum temperature	-15.6 C (3.9 F)	45 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record low minimum temperature	-36.7 C (-34.1 F)	44 of 100 (Notable)
Waiawa 943	United States	Record daily precipitation	76.7 mm (3.0 in)	44 of 100 (Notable)
Dayton 1 WSW	United States	Record low maximum temperature	-18.9 C (-2.0 F)	42 of 100 (Notable)
Pomeroy	United States	Record low maximum temperature	-18.9 C (-2.0 F)	41 of 100 (Notable)
Geluk (Irr)	South Africa	Record daily precipitation	45.0 mm (1.8 in)	40 of 100 (Notable)
Mamogaleskraal	South Africa	Record daily precipitation	54.4 mm (2.1 in)	40 of 100 (Notable)
Riggins	United States	Record low minimum temperature	-22.2 C (-8.0 F)	40 of 100 (Notable)
Kimball 2NE	United States	Record low minimum temperature	-28.9 C (-20.0 F)	40 of 100 (Notable)
Wallowa	United States	Record low maximum temperature	-20.6 C (-5.1 F)	40 of 100 (Notable)
Waianae 798	United States	Record daily precipitation	55.9 mm (2.2 in)	40 of 100 (Notable)
Grangeville	United States	Record low maximum temperature	-17.2 C (1.0 F)	39 of 100 (Notable)
Primghar	United States	Record low maximum temperature	-21.7 C (-7.1 F)	39 of 100 (Notable)
Polson	United States	Record low maximum temperature	-22.8 C (-9.0 F)	39 of 100 (Notable)
Vernonia	United States	Record low maximum temperature	-7.2 C (19.0 F)	38 of 100 (Notable)
Cle Elum	United States	Record low minimum temperature	-31.7 C (-25.1 F)	38 of 100 (Notable)
Lake Kachess	United States	Record low maximum temperature	-20.0 C (-4.0 F)	38 of 100 (Notable)
Leavenworth 3 S	United States	Record low maximum temperature	-17.2 C (1.0 F)	38 of 100 (Notable)
Craig	United States	Record low maximum temperature	-11.7 C (10.9 F)	37 of 100 (Notable)
Huntington	United States	Record low maximum temperature	-13.3 C (8.1 F)	37 of 100 (Notable)
Waterville	United States	Record low maximum temperature	-21.1 C (-6.0 F)	37 of 100 (Notable)
Leeuspruit Wes	South Africa	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Gettysburg	United States	Record low maximum temperature	-24.4 C (-11.9 F)	36 of 100 (Notable)
Ellensburg	United States	Record low maximum temperature	-20.0 C (-4.0 F)	36 of 100 (Notable)
Hartline	United States	Record low maximum temperature	-22.8 C (-9.0 F)	36 of 100 (Notable)
Palmer 3 ESE	United States	Record low maximum temperature	-10.6 C (12.9 F)	36 of 100 (Notable)
Ketchikan AP	United States	Record daily snowfall	14.0 cm (5.5 in)	36 of 100 (Notable)
Bundaberg Post Office	Australia	Record high maximum temperature	37.1 C (98.8 F)	35 of 100 (Notable)
Grover 10 W	United States	Record low minimum temperature	-30.6 C (-23.1 F)	35 of 100 (Notable)
Carrabelle 1 NNW	United States	Record daily precipitation	49.5 mm (1.9 in)	35 of 100 (Notable)
Shoshone 1 WNW	United States	Record low maximum temperature	-13.9 C (7.0 F)	35 of 100 (Notable)
Ness City	United States	Record low maximum temperature	-11.1 C (12.0 F)	35 of 100 (Notable)
Lodgepole	United States	Record low maximum temperature	-15.0 C (5.0 F)	35 of 100 (Notable)
Austin 3 S	United States	Record low maximum temperature	-14.4 C (6.1 F)	35 of 100 (Notable)
Newell	United States	Record low maximum temperature	-27.8 C (-18.0 F)	35 of 100 (Notable)
Clearwater	United States	Record low maximum temperature	-0.6 C (30.9 F)	35 of 100 (Notable)
Port Townsend	United States	Record low minimum temperature	-13.9 C (7.0 F)	35 of 100 (Notable)
Wapato	United States	Record low maximum temperature	-16.7 C (1.9 F)	35 of 100 (Notable)
Alta 1 NNW	United States	Record low maximum temperature	-15.0 C (5.0 F)	35 of 100 (Notable)
Saltspring Island	Canada	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
American Falls 6 NE	United States	Record low minimum temperature	-23.3 C (-9.9 F)	34 of 100 (Routine)
Idaho City	United States	Record low maximum temperature	-11.7 C (10.9 F)	34 of 100 (Routine)
Springview 2NW	United States	Record low minimum temperature	-31.7 C (-25.1 F)	34 of 100 (Routine)
Dickinson Exp STN	United States	Record snow depth	20.3 cm (8.0 in)	34 of 100 (Routine)
Austin 3 S	United States	Record low minimum temperature	-37.2 C (-35.0 F)	34 of 100 (Routine)
Leaburg 1 SW	United States	Record low minimum temperature	-11.1 C (12.0 F)	34 of 100 (Routine)
Cedar Lake	United States	Record low maximum temperature	-11.7 C (10.9 F)	34 of 100 (Routine)
Everett	United States	Record low maximum temperature	-7.8 C (18.0 F)	34 of 100 (Routine)
Kosmos	United States	Record low maximum temperature	-3.9 C (25.0 F)	34 of 100 (Routine)
Mt Adams Rs	United States	Record low minimum temperature	-28.9 C (-20.0 F)	34 of 100 (Routine)
Snoqualmie Falls	United States	Record low maximum temperature	-6.7 C (19.9 F)	34 of 100 (Routine)
Chugwater	United States	Record low minimum temperature	-38.9 C (-38.0 F)	34 of 100 (Routine)
Wheatland 4N	United States	Record low minimum temperature	-35.6 C (-32.1 F)	34 of 100 (Routine)
Yoder 5 W	United States	Record low minimum temperature	-36.1 C (-33.0 F)	34 of 100 (Routine)

Counts by Type and Timescale

1,239 records

Records set or tied on 17 December 1964 by type: Highest daily maximum 15, Lowest daily maximum 510, Highest daily minimum 12, Lowest daily minimum 553, Heaviest daily rainfall 112, Heaviest daily snowfall 25, Deepest snow cover 12.

Records on 17 December 1964 by type
Record type	Records
Highest daily maximum	15
Lowest daily maximum	510
Highest daily minimum	12
Lowest daily minimum	553
Heaviest daily rainfall	112
Heaviest daily snowfall	25
Deepest snow cover	12

Records on 17 December 1964 by timescale: all-time 27, monthly 146, daily 1,066.

How Much Records Were Beaten By

1,055 broken records

Margins by which the 1,055 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 89.0. Ties are not counted.

Top 20 by Significance

17 December 1964

Top 20 records on 17 December 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 December 1964	Atil, MX	monthly rain	89.9 mm (3.5 in)	49.5 mm (1.9 in)	3 years	53 of 100 (Notable)
17 December 1964	Rienzi, ZA	daily rain	64.5 mm (2.5 in)	44.2 mm (1.7 in)	28 years	51 of 100 (Notable)
17 December 1964	Hamilton, US	all-time low max	-25.0 C (-13.0 F)	1.7 C (3.1 F)	65 years	48 of 100 (Notable)
17 December 1964	Blaine, US	daily low max	-6.7 C (19.9 F)	6.7 C (12.1 F)	66 years	46 of 100 (Notable)
17 December 1964	Coupeville 1 S, US	daily low min	-13.3 C (8.1 F)	7.2 C (13.0 F)	68 years	46 of 100 (Notable)
17 December 1964	Port Angeles, US	daily low min	-13.3 C (8.1 F)	10.0 C (18.0 F)	18 years	46 of 100 (Notable)
17 December 1964	Anacortes, US	all-time low min	-15.6 C (3.9 F)	1.2 C (2.2 F)	55 years	45 of 100 (Notable)
17 December 1964	Yellowstone Park Mammoth, US	monthly low min	-36.7 C (-34.1 F)	5.0 C (9.0 F)	63 years	44 of 100 (Notable)
17 December 1964	Waiawa 943, US	daily rain	76.7 mm (3.0 in)	50.8 mm (2.0 in)	34 years	44 of 100 (Notable)
17 December 1964	Dayton 1 WSW, US	all-time low max	-18.9 C (-2.0 F)	1.7 C (3.1 F)	45 years	42 of 100 (Notable)
17 December 1964	Pomeroy, US	all-time low max	-18.9 C (-2.0 F)	3.3 C (5.9 F)	27 years	41 of 100 (Notable)
17 December 1964	Geluk (Irr), ZA	daily rain	45.0 mm (1.8 in)	34.8 mm (1.4 in)	33 years	40 of 100 (Notable)
17 December 1964	Mamogaleskraal, ZA	daily rain	54.4 mm (2.1 in)	33.6 mm (1.3 in)	34 years	40 of 100 (Notable)
17 December 1964	Riggins, US	monthly low min	-22.2 C (-8.0 F)	4.4 C (7.9 F)	48 years	40 of 100 (Notable)
17 December 1964	Kimball 2NE, US	daily low min	-28.9 C (-20.0 F)	8.3 C (14.9 F)	66 years	40 of 100 (Notable)
17 December 1964	Wallowa, US	daily low max	-20.6 C (-5.1 F)	10.6 C (19.1 F)	50 years	40 of 100 (Notable)
17 December 1964	Waianae 798, US	daily rain	55.9 mm (2.2 in)	44.7 mm (1.8 in)	45 years	40 of 100 (Notable)
17 December 1964	Grangeville, US	monthly low max	-17.2 C (1.0 F)	5.0 C (9.0 F)	36 years	39 of 100 (Notable)
17 December 1964	Primghar, US	monthly low max	-21.7 C (-7.1 F)	2.8 C (5.0 F)	61 years	39 of 100 (Notable)
17 December 1964	Polson, US	daily low max	-22.8 C (-9.0 F)	10.6 C (19.1 F)	50 years	39 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 1964

Records set or tied on this calendar date in each year from 1793 to 1964. 1964 had 1,239 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 1964-12-17: 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).