Weather Records on 16 December 1966

417 weather records were set or tied worldwide on 16 December 1966. Highest significance: Greylingstad (Sar), ZA.

Key Facts for 16 December 1966

On 16 December 1966, 417 weather records were set or tied at long-record stations worldwide.
126 were record highs and 65 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 5 monthly and 409 daily.
Greylingstad (Sar) set a daily record precipitation of 49.0 mm (1.9 in) on 16 December 1966.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 483 records.

Record Map

417 stations

417 station records on 16 December 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 16 December 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Greylingstad (Sar)	South Africa	Record daily precipitation	49.0 mm (1.9 in)	51 of 100 (Notable)
New Braunfels	United States	Record daily precipitation	57.2 mm (2.3 in)	51 of 100 (Notable)
Ghanzi	Botswana	Record daily precipitation	51.1 mm (2.0 in)	48 of 100 (Notable)
Hex Krantz	South Africa	Record daily precipitation	56.0 mm (2.2 in)	46 of 100 (Notable)
Pretoria-Fountains	South Africa	Record daily precipitation	48.5 mm (1.9 in)	46 of 100 (Notable)
Klipfontein	South Africa	Record daily precipitation	78.8 mm (3.1 in)	45 of 100 (Notable)
Bon Accord Dam	South Africa	Record daily precipitation	63.0 mm (2.5 in)	45 of 100 (Notable)
Caulfield (Racecourse)	Australia	Record daily precipitation	25.7 mm (1.0 in)	44 of 100 (Notable)
Newnham (Rocherlea)	Australia	Record daily precipitation	63.5 mm (2.5 in)	44 of 100 (Notable)
Cegcuana (Bos)	South Africa	Record daily precipitation	48.0 mm (1.9 in)	39 of 100 (Notable)
Middelweg	South Africa	Record daily precipitation	56.0 mm (2.2 in)	39 of 100 (Notable)
Waterkloof	South Africa	Record daily precipitation	59.4 mm (2.3 in)	39 of 100 (Notable)
Burnley	Australia	Record daily precipitation	32.5 mm (1.3 in)	38 of 100 (Notable)
Flin Flon	Canada	Record daily snowfall	8.9 cm (3.5 in)	38 of 100 (Notable)
Florisbad	South Africa	Record daily precipitation	45.0 mm (1.8 in)	37 of 100 (Notable)
Hartebeespoort-Agrc.	South Africa	Record daily precipitation	44.5 mm (1.8 in)	37 of 100 (Notable)
Kew	Australia	Record daily precipitation	36.3 mm (1.4 in)	36 of 100 (Notable)
Lady Barron (Franklin Parade)	Australia	Record daily precipitation	91.7 mm (3.6 in)	36 of 100 (Notable)
Mochudi	Botswana	Record daily precipitation	58.5 mm (2.3 in)	36 of 100 (Notable)
Donkerhoek (Skl)	South Africa	Record daily precipitation	48.0 mm (1.9 in)	36 of 100 (Notable)
Flatonia 4SE	United States	Record daily precipitation	37.6 mm (1.5 in)	36 of 100 (Notable)
De Brug (Pol)	South Africa	Record daily precipitation	32.5 mm (1.3 in)	34 of 100 (Routine)
Kareepoort (Irr)	South Africa	Record daily precipitation	52.5 mm (2.1 in)	34 of 100 (Routine)
Diablo Dam	United States	Record daily precipitation	80.3 mm (3.2 in)	33 of 100 (Routine)
Kanye	Botswana	Record daily precipitation	58.0 mm (2.3 in)	32 of 100 (Routine)
Petrusberg (Pol)	South Africa	Record daily precipitation	30.5 mm (1.2 in)	31 of 100 (Routine)
Yerevan	Armenia	Record high minimum temperature	3.3 C (37.9 F)	30 of 100 (Routine)
Balwyn North	Australia	Record daily precipitation	34.3 mm (1.4 in)	30 of 100 (Routine)
Slavgorod	Russia	Record low maximum temperature	-36.5 C (-33.7 F)	30 of 100 (Routine)
Beeville 5 NE	United States	Record daily precipitation	30.2 mm (1.2 in)	30 of 100 (Routine)
Port Lavaca 2	United States	Record daily precipitation	34.5 mm (1.4 in)	30 of 100 (Routine)
Lobatse	Botswana	Record daily precipitation	55.5 mm (2.2 in)	29 of 100 (Routine)
Teriberka	Russia	Record low maximum temperature	-15.4 C (4.3 F)	29 of 100 (Routine)
Pretoria-Burgerspark	South Africa	Record daily precipitation	43.5 mm (1.7 in)	29 of 100 (Routine)
Pretoria-Waterkloof-Cntry	South Africa	Record daily precipitation	54.0 mm (2.1 in)	29 of 100 (Routine)
Lilydale	Australia	Record daily precipitation	45.7 mm (1.8 in)	28 of 100 (Routine)
Victoria Gonzales Hts	Canada	Record high minimum temperature	8.3 C (46.9 F)	28 of 100 (Routine)
Hedal I Valdres	Norway	Record snow depth	120.0 cm (47.2 in)	28 of 100 (Routine)
Bogucany	Russia	Record low maximum temperature	-48.3 C (-54.9 F)	28 of 100 (Routine)
Tisul	Russia	Record low maximum temperature	-39.9 C (-39.8 F)	28 of 100 (Routine)
Salopia	South Africa	Record daily precipitation	36.0 mm (1.4 in)	28 of 100 (Routine)
Geluk (Irr)	South Africa	Record daily precipitation	56.0 mm (2.2 in)	28 of 100 (Routine)
Dullstroom (Sar)	South Africa	Record daily precipitation	29.0 mm (1.1 in)	28 of 100 (Routine)
Salem AP (McNary Field)	United States	Record high maximum temperature	14.4 C (57.9 F)	28 of 100 (Routine)
Toora	Australia	Record daily precipitation	27.7 mm (1.1 in)	27 of 100 (Routine)
Yannathan	Australia	Record daily precipitation	27.9 mm (1.1 in)	27 of 100 (Routine)
Steppes (Old Post Office)	Australia	Record daily precipitation	27.7 mm (1.1 in)	27 of 100 (Routine)
Chilliwack	Canada	Record high maximum temperature	13.9 C (57.0 F)	27 of 100 (Routine)
Canterbury	Australia	Record daily precipitation	31.0 mm (1.2 in)	26 of 100 (Routine)
Assiniboia	Canada	Record high minimum temperature	-2.8 C (27.0 F)	26 of 100 (Routine)
San German 4 W	Puerto Rico [United States]	Record low maximum temperature	28.3 C (82.9 F)	26 of 100 (Routine)
De Wagendrift	South Africa	Record daily precipitation	36.0 mm (1.4 in)	26 of 100 (Routine)
Headworks Portland Wtr B	United States	Record high maximum temperature	13.3 C (55.9 F)	26 of 100 (Routine)
Goliad	United States	Record daily precipitation	33.8 mm (1.3 in)	26 of 100 (Routine)
Jindivick	Australia	Record daily precipitation	33.5 mm (1.3 in)	25 of 100 (Routine)
Ringwood	Australia	Record daily precipitation	36.6 mm (1.4 in)	25 of 100 (Routine)
Mamanguape	Brazil	Record daily precipitation	39.1 mm (1.5 in)	25 of 100 (Routine)
Fort McPherson	Canada	Record daily snowfall	6.4 cm (2.5 in)	25 of 100 (Routine)
Prince	Canada	Record high minimum temperature	-6.7 C (19.9 F)	25 of 100 (Routine)
Taganrog (Lighthouse)	Russia	Record high minimum temperature	5.1 C (41.2 F)	25 of 100 (Routine)

Counts by Type and Timescale

417 records

Records set or tied on 16 December 1966 by type: Highest daily maximum 34, Lowest daily maximum 38, Highest daily minimum 92, Lowest daily minimum 27, Heaviest daily rainfall 212, Heaviest daily snowfall 7, Deepest snow cover 7.

Records on 16 December 1966 by type
Record type	Records
Highest daily maximum	34
Lowest daily maximum	38
Highest daily minimum	92
Lowest daily minimum	27
Heaviest daily rainfall	212
Heaviest daily snowfall	7
Deepest snow cover	7

Records on 16 December 1966 by timescale: all-time 3, monthly 5, daily 409.

How Much Records Were Beaten By

352 broken records

Margins by which the 352 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 320.0. Ties are not counted.

Top 20 by Significance

16 December 1966

Top 20 records on 16 December 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 December 1966	Greylingstad (Sar), ZA	daily rain	49.0 mm (1.9 in)	33.8 mm (1.3 in)	56 years	51 of 100 (Notable)
16 December 1966	New Braunfels, US	daily rain	57.2 mm (2.3 in)	41.7 mm (1.6 in)	52 years	51 of 100 (Notable)
16 December 1966	Ghanzi, BW	daily rain	51.1 mm (2.0 in)	33.8 mm (1.3 in)	28 years	48 of 100 (Notable)
16 December 1966	Hex Krantz, ZA	daily rain	56.0 mm (2.2 in)	40.3 mm (1.6 in)	36 years	46 of 100 (Notable)
16 December 1966	Pretoria-Fountains, ZA	daily rain	48.5 mm (1.9 in)	28.4 mm (1.1 in)	57 years	46 of 100 (Notable)
16 December 1966	Klipfontein, ZA	daily rain	78.8 mm (3.1 in)	60.6 mm (2.4 in)	12 years	45 of 100 (Notable)
16 December 1966	Bon Accord Dam, ZA	daily rain	63.0 mm (2.5 in)	49.0 mm (1.9 in)	4 years	45 of 100 (Notable)
16 December 1966	Caulfield (Racecourse), AU	daily rain	25.7 mm (1.0 in)	15.0 mm (0.6 in)	74 years	44 of 100 (Notable)
16 December 1966	Newnham (Rocherlea), AU	monthly rain	63.5 mm (2.5 in)	14.0 mm (0.6 in)	29 years	44 of 100 (Notable)
16 December 1966	Cegcuana (Bos), ZA	daily rain	48.0 mm (1.9 in)	26.2 mm (1.0 in)	31 years	39 of 100 (Notable)
16 December 1966	Middelweg, ZA	daily rain	56.0 mm (2.2 in)	31.6 mm (1.2 in)	36 years	39 of 100 (Notable)
16 December 1966	Waterkloof, ZA	daily rain	59.4 mm (2.3 in)	41.1 mm (1.6 in)	32 years	39 of 100 (Notable)
16 December 1966	Burnley, AU	daily rain	32.5 mm (1.3 in)	20.6 mm (0.8 in)	33 years	38 of 100 (Notable)
16 December 1966	Flin Flon, CA	daily snowfall	8.9 cm (3.5 in)	7.6 cm (3.0 in)	3 years	38 of 100 (Notable)
16 December 1966	Florisbad, ZA	daily rain	45.0 mm (1.8 in)	26.2 mm (1.0 in)	31 years	37 of 100 (Notable)
16 December 1966	Hartebeespoort-Agrc., ZA	daily rain	44.5 mm (1.8 in)	27.0 mm (1.1 in)	29 years	37 of 100 (Notable)
16 December 1966	Kew, AU	daily rain	36.3 mm (1.4 in)	15.7 mm (0.6 in)	33 years	36 of 100 (Notable)
16 December 1966	Lady Barron (Franklin Parade), AU	monthly rain	91.7 mm (3.6 in)	7.9 mm (0.31 in)	43 years	36 of 100 (Notable)
16 December 1966	Mochudi, BW	daily rain	58.5 mm (2.3 in)	33.1 mm (1.3 in)	28 years	36 of 100 (Notable)
16 December 1966	Donkerhoek (Skl), ZA	daily rain	48.0 mm (1.9 in)	19.0 mm (0.7 in)	57 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 1966

Records set or tied on this calendar date in each year from 1793 to 1966. 1966 had 417 records.

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

Records on 12-16 in each year
Year	Records
1793	2
1798	2
1808	1
1810	1
1814	2
1815	2
1835	1
1839	1
1840	1
1846	3
1852	1
1853	1
1859	3
1864	1
1869	1
1870	1
1872	1
1876	1
1877	1
1878	2
1879	1
1885	2
1886	2
1888	2
1889	1
1890	4
1891	2
1892	3
1893	1
1894	1
1895	1
1896	7
1897	4
1898	1
1899	2
1900	2
1901	4
1902	17
1903	6
1904	8
1905	4
1906	5
1907	30
1908	11
1909	5
1910	38
1911	26
1912	31
1913	12
1914	26
1915	55
1916	31
1917	60
1918	33
1919	52
1920	61
1921	35
1922	62
1923	205
1924	347
1925	93
1926	130
1927	218
1928	338
1929	383
1930	398
1931	168
1932	880
1933	716
1934	163
1935	71
1936	429
1937	351
1938	142
1939	1,014
1940	633
1941	348
1942	550
1943	491
1944	189
1945	478
1946	357
1947	506
1948	775
1949	132
1950	272
1951	987
1952	349
1953	265
1954	305
1955	325
1956	650
1957	478
1958	497
1959	605
1960	393
1961	858
1962	859
1963	484
1964	639
1965	576
1966	417
1967	886
1968	557
1969	205
1970	726
1971	1,540
1972	1,020
1973	823
1974	546
1975	493
1976	526
1977	950
1978	532
1979	528
1980	1,322
1981	1,498
1982	1,208
1983	1,156
1984	1,944
1985	983
1986	485
1987	1,377
1988	605
1989	3,181
1990	753
1991	659
1992	1,408
1993	676
1994	698
1995	714
1996	797
1997	1,260
1998	698
1999	821
2000	1,160
2001	1,197
2002	990
2003	679
2004	510
2005	1,073
2006	1,020
2007	1,301
2008	2,049
2009	1,032
2010	1,585
2011	777
2012	912
2013	762
2014	465
2015	925
2016	1,588
2017	349
2018	624
2019	786
2020	415
2021	1,485
2022	836
2023	841
2024	755
2025	1,820

Download the Data

Data for records on 1966-12-16: 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 50	346
50 to 100	5
100 to 150	0
150 to 200	0
200 to 250	0
250 to 300	0
300 to 350	1