Weather Records on 18 December 1971

387 weather records were set or tied worldwide on 18 December 1971. Highest significance: Green Bay, US.

Key Facts for 18 December 1971

On 18 December 1971, 387 weather records were set or tied at long-record stations worldwide.
78 were record highs and 82 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 380 daily.
Green Bay set a daily record snowfall of 12.4 cm (4.9 in) on 18 December 1971.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 480 records.

Record Map

387 stations

387 station records on 18 December 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 December 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Green Bay	United States	Record daily snowfall	12.4 cm (4.9 in)	53 of 100 (Notable)
Choteau	United States	Record daily snowfall	15.2 cm (6.0 in)	48 of 100 (Notable)
Uppsala_Aut	Sweden	Record high maximum temperature	6.3 C (43.3 F)	41 of 100 (Notable)
Milingimbi	Australia	Record daily precipitation	102.6 mm (4.0 in)	39 of 100 (Notable)
Windermere (Acacia House)	Australia	Record daily precipitation	54.6 mm (2.1 in)	39 of 100 (Notable)
Newlands	South Africa	Record daily precipitation	42.5 mm (1.7 in)	38 of 100 (Notable)
Summit	United States	Record daily precipitation	34.8 mm (1.4 in)	38 of 100 (Notable)
Stanley Wwtp	United States	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Pretoria-Waterkloof-Cntry	South Africa	Record daily precipitation	50.0 mm (2.0 in)	37 of 100 (Notable)
Blackleaf	United States	Record daily snowfall	15.2 cm (6.0 in)	37 of 100 (Notable)
Ksara	Lebanon	Record low maximum temperature	1.0 C (33.8 F)	36 of 100 (Notable)
Smithfield (Mun)	South Africa	Record daily precipitation	26.0 mm (1.0 in)	36 of 100 (Notable)
Warrenton (Mun)	South Africa	Record daily precipitation	27.3 mm (1.1 in)	36 of 100 (Notable)
Seal Rocks Camping Reserve	Australia	Record daily precipitation	57.7 mm (2.3 in)	35 of 100 (Notable)
Nicosia	Cyprus	Record low maximum temperature	10.0 C (50.0 F)	35 of 100 (Notable)
Reivilo	South Africa	Record daily precipitation	78.0 mm (3.1 in)	35 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high minimum temperature	-0.4 C (31.3 F)	35 of 100 (Notable)
Pine River 3 NE	United States	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
McGrath AP	United States	Record snow depth	101.6 cm (40.0 in)	35 of 100 (Notable)
Nuwara Eliya	Sri Lanka	Record low maximum temperature	15.9 C (60.6 F)	34 of 100 (Routine)
Marshfield Exp Farm	United States	Record daily snowfall	9.7 cm (3.8 in)	34 of 100 (Routine)
Makaweli 965	United States	Record daily precipitation	167.1 mm (6.6 in)	34 of 100 (Routine)
Klipfontein"Potfontein"	South Africa	Record daily precipitation	28.1 mm (1.1 in)	33 of 100 (Routine)
Burketown Post Office	Australia	Record low minimum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Lourensgeluk	South Africa	Record daily precipitation	56.5 mm (2.2 in)	32 of 100 (Routine)
Waianae 798	United States	Record daily precipitation	60.5 mm (2.4 in)	32 of 100 (Routine)
Bowie	United States	Record low maximum temperature	4.4 C (39.9 F)	31 of 100 (Routine)
Ft Ross	United States	Record low minimum temperature	1.7 C (35.1 F)	31 of 100 (Routine)
Arrowrock Dam	United States	Record snow depth	61.0 cm (24.0 in)	31 of 100 (Routine)
Rockport 1 ESE	United States	Record daily snowfall	10.2 cm (4.0 in)	31 of 100 (Routine)
Wesselsbron (Mun)	South Africa	Record daily precipitation	28.5 mm (1.1 in)	30 of 100 (Routine)
Flahult	Sweden	Record high minimum temperature	3.2 C (37.8 F)	30 of 100 (Routine)
Cambridge	United States	Record daily snowfall	10.2 cm (4.0 in)	30 of 100 (Routine)
Medicine Lake 3 SE	United States	Record daily snowfall	10.2 cm (4.0 in)	30 of 100 (Routine)
Parshall	United States	Record daily snowfall	6.4 cm (2.5 in)	30 of 100 (Routine)
Bluff	United States	Record low minimum temperature	-21.7 C (-7.1 F)	30 of 100 (Routine)
University Exp STN	United States	Record daily snowfall	22.9 cm (9.0 in)	30 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record high maximum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Quitman 2 NW	United States	Record high maximum temperature	27.8 C (82.0 F)	29 of 100 (Routine)
Bay Saint Louis	United States	Record high maximum temperature	26.7 C (80.1 F)	29 of 100 (Routine)
Simpson 6 N - Wildhorse	United States	Record daily snowfall	5.1 cm (2.0 in)	29 of 100 (Routine)
Gage	United States	Record low maximum temperature	2.2 C (36.0 F)	29 of 100 (Routine)
Burns WSO City	United States	Record snow depth	27.9 cm (11.0 in)	29 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high maximum temperature	11.3 C (52.3 F)	28 of 100 (Routine)
Fergus Falls	United States	Record daily snowfall	10.2 cm (4.0 in)	28 of 100 (Routine)
Sheldon	United States	Record snow depth	48.3 cm (19.0 in)	28 of 100 (Routine)
Meadville 1 S	United States	Record daily snowfall	20.3 cm (8.0 in)	28 of 100 (Routine)
Iliamna AP	United States	Record daily snowfall	20.3 cm (8.0 in)	28 of 100 (Routine)
Deddington (Marathon)	Australia	Record daily precipitation	29.2 mm (1.1 in)	27 of 100 (Routine)
Douglas	United States	Record high maximum temperature	26.7 C (80.1 F)	27 of 100 (Routine)
Angelica	United States	Record daily snowfall	7.6 cm (3.0 in)	27 of 100 (Routine)
Ben Lomond	South Africa	Record daily precipitation	35.6 mm (1.4 in)	26 of 100 (Routine)
Nazareth House Farm	South Africa	Record daily precipitation	29.5 mm (1.2 in)	26 of 100 (Routine)
Tombstone	United States	Record low maximum temperature	4.4 C (39.9 F)	26 of 100 (Routine)
Haverhill	United States	Record daily snowfall	16.5 cm (6.5 in)	26 of 100 (Routine)
Ipswich	United States	Record daily snowfall	20.3 cm (8.0 in)	26 of 100 (Routine)
Houma	United States	Record high maximum temperature	27.8 C (82.0 F)	25 of 100 (Routine)
Wenatchee	United States	Record snow depth	40.6 cm (16.0 in)	25 of 100 (Routine)
Waialua 847	United States	Record daily precipitation	102.6 mm (4.0 in)	25 of 100 (Routine)
Baker Kbkr	United States	Record snow depth	25.4 cm (10.0 in)	25 of 100 (Routine)

Counts by Type and Timescale

387 records

Records set or tied on 18 December 1971 by type: Highest daily maximum 34, Lowest daily maximum 41, Highest daily minimum 44, Lowest daily minimum 41, Heaviest daily rainfall 136, Heaviest daily snowfall 64, Deepest snow cover 27.

Records on 18 December 1971 by type
Record type	Records
Highest daily maximum	34
Lowest daily maximum	41
Highest daily minimum	44
Lowest daily minimum	41
Heaviest daily rainfall	136
Heaviest daily snowfall	64
Deepest snow cover	27

Records on 18 December 1971 by timescale: all-time 0, monthly 7, daily 380.

How Much Records Were Beaten By

308 broken records

Margins by which the 308 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 381.0. Ties are not counted.

Top 20 by Significance

18 December 1971

Top 20 records on 18 December 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1971	Green Bay, US	daily snowfall	12.4 cm (4.9 in)	8.3 cm (3.3 in)	77 years	53 of 100 (Notable)
18 December 1971	Choteau, US	daily snowfall	15.2 cm (6.0 in)	12.9 cm (5.1 in)	49 years	48 of 100 (Notable)
18 December 1971	Uppsala_Aut, SE	daily high max	6.3 C (43.3 F)	0.6 C (1.1 F)	113 years	41 of 100 (Notable)
18 December 1971	Milingimbi, AU	daily rain	102.6 mm (4.0 in)	62.0 mm (2.4 in)	34 years	39 of 100 (Notable)
18 December 1971	Windermere (Acacia House), AU	daily rain	54.6 mm (2.1 in)	28.2 mm (1.1 in)	9 years	39 of 100 (Notable)
18 December 1971	Newlands, ZA	daily rain	42.5 mm (1.7 in)	15.6 mm (0.6 in)	46 years	38 of 100 (Notable)
18 December 1971	Summit, US	daily rain	34.8 mm (1.4 in)	19.6 mm (0.8 in)	12 years	38 of 100 (Notable)
18 December 1971	Stanley Wwtp, US	daily snowfall	12.7 cm (5.0 in)	7.6 cm (3.0 in)	42 years	38 of 100 (Notable)
18 December 1971	Pretoria-Waterkloof-Cntry, ZA	daily rain	50.0 mm (2.0 in)	28.4 mm (1.1 in)	44 years	37 of 100 (Notable)
18 December 1971	Blackleaf, US	daily snowfall	15.2 cm (6.0 in)	12.2 cm (4.8 in)	6 years	37 of 100 (Notable)
18 December 1971	Ksara, LB	daily low max	1.0 C (33.8 F)	6.8 C (12.2 F)	42 years	36 of 100 (Notable)
18 December 1971	Smithfield (Mun), ZA	daily rain	26.0 mm (1.0 in)	4.4 mm (0.17 in)	81 years	36 of 100 (Notable)
18 December 1971	Warrenton (Mun), ZA	daily rain	27.3 mm (1.1 in)	13.6 mm (0.5 in)	54 years	36 of 100 (Notable)
18 December 1971	Seal Rocks Camping Reserve, AU	daily rain	57.7 mm (2.3 in)	15.8 mm (0.6 in)	64 years	35 of 100 (Notable)
18 December 1971	Nicosia, CY	daily low max	10.0 C (50.0 F)	1.1 C (2.0 F)	77 years	35 of 100 (Notable)
18 December 1971	Reivilo, ZA	monthly rain	78.0 mm (3.1 in)	14.5 mm (0.6 in)	29 years	35 of 100 (Notable)
18 December 1971	Col du Grand St-Bernard, CH	daily high min	-0.4 C (31.3 F)	1.4 C (2.5 F)	78 years	35 of 100 (Notable)
18 December 1971	Pine River 3 NE, US	daily snowfall	10.2 cm (4.0 in)	2.6 cm (1.0 in)	74 years	35 of 100 (Notable)
18 December 1971	McGrath AP, US	daily snow depth	101.6 cm (40.0 in)	38.1 cm (15.0 in)	28 years	35 of 100 (Notable)
18 December 1971	Nuwara Eliya, LK	daily low max	15.9 C (60.6 F)	0.3 C (0.5 F)	77 years	34 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 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 387 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 1971-12-18: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	278
50 to 100	18
100 to 150	6
150 to 200	2
200 to 250	3
250 to 300	0
300 to 350	0
350 to 400	1