Weather Records on 18 December 1970

502 weather records were set or tied worldwide on 18 December 1970. Highest significance: Moosehead, US.

Key Facts for 18 December 1970

On 18 December 1970, 502 weather records were set or tied at long-record stations worldwide.
137 were record highs and 54 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 8 monthly and 494 daily.
Moosehead set a daily record snowfall of 33.0 cm (13.0 in) on 18 December 1970.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 480 records.

Record Map

502 stations

502 station records on 18 December 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 December 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Moosehead	United States	Record daily snowfall	33.0 cm (13.0 in)	54 of 100 (Notable)
Hopewell	South Africa	Record daily precipitation	68.0 mm (2.7 in)	51 of 100 (Notable)
Spencer 10 NE	United States	Record daily snowfall	10.2 cm (4.0 in)	51 of 100 (Notable)
Manchester	United States	Record daily snowfall	17.8 cm (7.0 in)	48 of 100 (Notable)
Fillmore	United States	Record daily snowfall	26.2 cm (10.3 in)	48 of 100 (Notable)
Challis	United States	Record snow depth	15.2 cm (6.0 in)	47 of 100 (Notable)
Greenwood	Canada	Record daily snowfall	27.9 cm (11.0 in)	46 of 100 (Notable)
Little Falls City Rsch	United States	Record snow depth	58.4 cm (23.0 in)	46 of 100 (Notable)
Walden	United States	Record daily snowfall	10.2 cm (4.0 in)	43 of 100 (Notable)
Millinocket	United States	Record daily snowfall	24.1 cm (9.5 in)	43 of 100 (Notable)
Worland	United States	Record daily snowfall	8.9 cm (3.5 in)	43 of 100 (Notable)
Berlin	United States	Record daily snowfall	24.1 cm (9.5 in)	42 of 100 (Notable)
Vryheid	South Africa	Record daily precipitation	93.0 mm (3.7 in)	41 of 100 (Notable)
Ipswich	United States	Record daily precipitation	55.4 mm (2.2 in)	41 of 100 (Notable)
Laersdrift (Pol)	South Africa	Record daily precipitation	62.0 mm (2.4 in)	40 of 100 (Notable)
Moosehead	United States	Record daily precipitation	31.5 mm (1.2 in)	40 of 100 (Notable)
Mays Mill	United States	Record daily snowfall	20.3 cm (8.0 in)	40 of 100 (Notable)
Ft Meade	United States	Record daily snowfall	5.1 cm (2.0 in)	39 of 100 (Notable)
Cody	United States	Record daily snowfall	7.6 cm (3.0 in)	39 of 100 (Notable)
Milford	United States	Record daily precipitation	29.2 mm (1.1 in)	37 of 100 (Notable)
Ft Hall 1 NNE	United States	Record daily snowfall	7.6 cm (3.0 in)	36 of 100 (Notable)
Hoosac Tunnel	United States	Record daily snowfall	19.1 cm (7.5 in)	36 of 100 (Notable)
Nephi	United States	Record daily snowfall	25.4 cm (10.0 in)	35 of 100 (Notable)
Oak City	United States	Record snow depth	17.8 cm (7.0 in)	35 of 100 (Notable)
Canton 4 SE	United States	Record snow depth	53.3 cm (21.0 in)	35 of 100 (Notable)
Gregory Downs Outstation	Australia	Record daily precipitation	40.9 mm (1.6 in)	34 of 100 (Routine)
Benfontein	South Africa	Record daily precipitation	28.5 mm (1.1 in)	34 of 100 (Routine)
Illawarra	South Africa	Record daily precipitation	56.0 mm (2.2 in)	34 of 100 (Routine)
Collbran	United States	Record daily snowfall	17.8 cm (7.0 in)	34 of 100 (Routine)
Norwich	United States	Record snow depth	43.2 cm (17.0 in)	34 of 100 (Routine)
Hermosa 3 SSW	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Avalon Pleasure Pier	United States	Record low minimum temperature	1.7 C (35.1 F)	33 of 100 (Routine)
Point Piedras Blanca	United States	Record daily precipitation	52.1 mm (2.1 in)	33 of 100 (Routine)
Rifle	United States	Record daily snowfall	15.2 cm (6.0 in)	33 of 100 (Routine)
Tomahawk Spirit Rsvr	United States	Record daily snowfall	12.7 cm (5.0 in)	33 of 100 (Routine)
Mayfern	South Africa	Record daily precipitation	63.0 mm (2.5 in)	32 of 100 (Routine)
Rockland	United States	Record snow depth	33.0 cm (13.0 in)	32 of 100 (Routine)
Newburyport	United States	Record daily precipitation	32.3 mm (1.3 in)	32 of 100 (Routine)
Basin	United States	Record daily snowfall	5.1 cm (2.0 in)	32 of 100 (Routine)
Yellowstone Park Mammoth	United States	Record daily snowfall	7.1 cm (2.8 in)	32 of 100 (Routine)
Cheyenne	United States	Record daily snowfall	7.1 cm (2.8 in)	32 of 100 (Routine)
Santa Paula	United States	Record low maximum temperature	11.1 C (52.0 F)	31 of 100 (Routine)
Blue Hill Coop	United States	Record daily precipitation	46.0 mm (1.8 in)	31 of 100 (Routine)
Beaver	United States	Record high maximum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Custer	United States	Record snow depth	12.7 cm (5.0 in)	31 of 100 (Routine)
Casper 2 E	United States	Record daily snowfall	5.3 cm (2.1 in)	31 of 100 (Routine)
Dull Ctr 1SE	United States	Record daily snowfall	10.2 cm (4.0 in)	31 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record high maximum temperature	36.0 C (96.8 F)	30 of 100 (Routine)
Port Aux Basques	Canada	Record daily precipitation	26.4 mm (1.0 in)	30 of 100 (Routine)
Rankins Pass	South Africa	Record daily precipitation	100.0 mm (3.9 in)	30 of 100 (Routine)
Hetch Hetchy	United States	Record snow depth	40.6 cm (16.0 in)	30 of 100 (Routine)
Brassua Dam	United States	Record daily snowfall	27.4 cm (10.8 in)	30 of 100 (Routine)
Farmington	United States	Record daily snowfall	25.4 cm (10.0 in)	30 of 100 (Routine)
Little Falls Mill St	United States	Record snow depth	43.2 cm (17.0 in)	30 of 100 (Routine)
Lusk 2 SW	United States	Record daily snowfall	12.7 cm (5.0 in)	30 of 100 (Routine)
Rochelle 7ENE	United States	Record daily snowfall	10.2 cm (4.0 in)	30 of 100 (Routine)
Rooiberg	South Africa	Record daily precipitation	43.0 mm (1.7 in)	29 of 100 (Routine)
Maandagshoek	South Africa	Record daily precipitation	34.0 mm (1.3 in)	29 of 100 (Routine)
Spot Pond	United States	Record daily precipitation	36.3 mm (1.4 in)	29 of 100 (Routine)
Baudette	United States	Record daily snowfall	10.2 cm (4.0 in)	29 of 100 (Routine)

Counts by Type and Timescale

502 records

Records set or tied on 18 December 1970 by type: Highest daily maximum 69, Lowest daily maximum 37, Highest daily minimum 68, Lowest daily minimum 17, Heaviest daily rainfall 155, Heaviest daily snowfall 110, Deepest snow cover 46.

Records on 18 December 1970 by type
Record type	Records
Highest daily maximum	69
Lowest daily maximum	37
Highest daily minimum	68
Lowest daily minimum	17
Heaviest daily rainfall	155
Heaviest daily snowfall	110
Deepest snow cover	46

Records on 18 December 1970 by timescale: all-time 0, monthly 8, daily 494.

How Much Records Were Beaten By

372 broken records

Margins by which the 372 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 406.0. Ties are not counted.

Top 20 by Significance

18 December 1970

Top 20 records on 18 December 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1970	Moosehead, US	daily snowfall	33.0 cm (13.0 in)	22.8 cm (9.0 in)	36 years	54 of 100 (Notable)
18 December 1970	Hopewell, ZA	daily rain	68.0 mm (2.7 in)	46.4 mm (1.8 in)	36 years	51 of 100 (Notable)
18 December 1970	Spencer 10 NE, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	52 years	51 of 100 (Notable)
18 December 1970	Manchester, US	daily snowfall	17.8 cm (7.0 in)	10.2 cm (4.0 in)	82 years	48 of 100 (Notable)
18 December 1970	Fillmore, US	daily snowfall	26.2 cm (10.3 in)	18.6 cm (7.3 in)	45 years	48 of 100 (Notable)
18 December 1970	Challis, US	daily snow depth	15.2 cm (6.0 in)	7.6 cm (3.0 in)	55 years	47 of 100 (Notable)
18 December 1970	Greenwood, CA	daily snowfall	27.9 cm (11.0 in)	12.7 cm (5.0 in)	37 years	46 of 100 (Notable)
18 December 1970	Little Falls City Rsch, US	daily snow depth	58.4 cm (23.0 in)	20.3 cm (8.0 in)	67 years	46 of 100 (Notable)
18 December 1970	Walden, US	daily snowfall	10.2 cm (4.0 in)	6.9 cm (2.7 in)	69 years	43 of 100 (Notable)
18 December 1970	Millinocket, US	daily snowfall	24.1 cm (9.5 in)	19.0 cm (7.5 in)	32 years	43 of 100 (Notable)
18 December 1970	Worland, US	daily snowfall	8.9 cm (3.5 in)	6.4 cm (2.5 in)	59 years	43 of 100 (Notable)
18 December 1970	Berlin, US	daily snowfall	24.1 cm (9.5 in)	13.9 cm (5.5 in)	40 years	42 of 100 (Notable)
18 December 1970	Vryheid, ZA	daily rain	93.0 mm (3.7 in)	47.3 mm (1.9 in)	29 years	41 of 100 (Notable)
18 December 1970	Ipswich, US	daily rain	55.4 mm (2.2 in)	34.1 mm (1.3 in)	40 years	41 of 100 (Notable)
18 December 1970	Laersdrift (Pol), ZA	daily rain	62.0 mm (2.4 in)	43.0 mm (1.7 in)	4 years	40 of 100 (Notable)
18 December 1970	Moosehead, US	daily rain	31.5 mm (1.2 in)	22.4 mm (0.9 in)	36 years	40 of 100 (Notable)
18 December 1970	Mays Mill, US	daily snowfall	20.3 cm (8.0 in)	17.8 cm (7.0 in)	37 years	40 of 100 (Notable)
18 December 1970	Ft Meade, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	68 years	39 of 100 (Notable)
18 December 1970	Cody, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	55 years	39 of 100 (Notable)
18 December 1970	Milford, US	daily rain	29.2 mm (1.1 in)	5.6 mm (0.22 in)	83 years	37 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 1970

Records set or tied on this calendar date in each year from 1793 to 1970. 1970 had 502 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 1970-12-18: 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 100	342
100 to 200	24
200 to 300	4
300 to 400	1
400 to 500	1