Weather Records on 21 December 1970

547 weather records were set or tied worldwide on 21 December 1970. Highest significance: Walgett (Dungalear), AU.

Key Facts for 21 December 1970

On 21 December 1970, 547 weather records were set or tied at long-record stations worldwide.
92 were record highs and 102 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 11 monthly and 535 daily.
Walgett (Dungalear) set a daily record precipitation of 58.9 mm (2.3 in) on 21 December 1970.
Across 158 earlier years (1793 to 2025) the same calendar date averaged 489 records.

Record Map

547 stations

547 station records on 21 December 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 December 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Walgett (Dungalear)	Australia	Record daily precipitation	58.9 mm (2.3 in)	64 of 100 (Major)
Sitio Sao Geraldo	Brazil	Record daily precipitation	302.5 mm (11.9 in)	63 of 100 (Major)
Gwabegar Post Office	Australia	Record daily precipitation	52.1 mm (2.1 in)	56 of 100 (Notable)
Little Falls City Rsch	United States	Record snow depth	55.9 cm (22.0 in)	56 of 100 (Notable)
Squirrel Inn 2	United States	Record daily snowfall	41.1 cm (16.2 in)	48 of 100 (Notable)
Pilliga (Nirvana)	Australia	Record daily precipitation	45.2 mm (1.8 in)	46 of 100 (Notable)
Adaven	United States	Record daily snowfall	45.7 cm (18.0 in)	46 of 100 (Notable)
Koster (Pol)	South Africa	Record daily precipitation	78.5 mm (3.1 in)	45 of 100 (Notable)
Huntington Lake	United States	Record daily snowfall	61.0 cm (24.0 in)	45 of 100 (Notable)
Coonabarabran (Namoi Street)	Australia	Record daily precipitation	43.2 mm (1.7 in)	44 of 100 (Notable)
Riversul	Brazil	Record daily precipitation	87.2 mm (3.4 in)	44 of 100 (Notable)
Ravenshill	South Africa	Record daily precipitation	124.5 mm (4.9 in)	44 of 100 (Notable)
Happy Camp Rs	United States	Record daily snowfall	20.3 cm (8.0 in)	44 of 100 (Notable)
Lexington Bluegrass AP	United States	Record daily precipitation	52.6 mm (2.1 in)	44 of 100 (Notable)
Tulloona (Coolanga)	Australia	Record daily precipitation	32.0 mm (1.3 in)	43 of 100 (Notable)
Coonabarabran (Mia Mia)	Australia	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
Gagrskiy	Georgia	Record daily precipitation	55.1 mm (2.2 in)	43 of 100 (Notable)
Grootmodderfontein	South Africa	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Hebel Store	Australia	Record daily precipitation	27.2 mm (1.1 in)	42 of 100 (Notable)
Canyon Dam	United States	Record daily snowfall	33.0 cm (13.0 in)	42 of 100 (Notable)
King City	United States	Record daily precipitation	31.8 mm (1.3 in)	41 of 100 (Notable)
Fairmont	United States	Record daily snowfall	12.7 cm (5.0 in)	40 of 100 (Notable)
Winburg (Pol)	South Africa	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)
Burbank Fire Dep Fc226	United States	Record daily precipitation	82.8 mm (3.3 in)	39 of 100 (Notable)
Caliente	United States	Record daily snowfall	6.4 cm (2.5 in)	38 of 100 (Notable)
Ft Bidwell	United States	Record daily snowfall	17.8 cm (7.0 in)	37 of 100 (Notable)
Paradise Valley 1 NW	United States	Record daily snowfall	15.2 cm (6.0 in)	37 of 100 (Notable)
Thurulgoona	Australia	Record daily precipitation	34.3 mm (1.4 in)	36 of 100 (Notable)
Mariposa	United States	Record daily precipitation	49.5 mm (1.9 in)	36 of 100 (Notable)
Danner	United States	Record daily snowfall	15.2 cm (6.0 in)	36 of 100 (Notable)
Lelie Shoek	South Africa	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
McCloud	United States	Record daily snowfall	33.0 cm (13.0 in)	35 of 100 (Notable)
Adaven	United States	Record daily precipitation	45.7 mm (1.8 in)	35 of 100 (Notable)
Carson City	United States	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Witklip (Bos)	South Africa	Record daily precipitation	91.5 mm (3.6 in)	34 of 100 (Routine)
Pasadena	United States	Record daily precipitation	56.6 mm (2.2 in)	34 of 100 (Routine)
Santa Paula	United States	Record daily precipitation	41.1 mm (1.6 in)	34 of 100 (Routine)
Tinnenburra	Australia	Record daily precipitation	59.4 mm (2.3 in)	33 of 100 (Routine)
Nindigully	Australia	Record daily precipitation	38.6 mm (1.5 in)	33 of 100 (Routine)
Salto Do Itarare	Brazil	Record daily precipitation	62.5 mm (2.5 in)	33 of 100 (Routine)
Sandberg	United States	Record snow depth	50.8 cm (20.0 in)	33 of 100 (Routine)
Gurley (Glenroy)	Australia	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Tahoe City	United States	Record snow depth	167.6 cm (66.0 in)	32 of 100 (Routine)
Rockland	United States	Record snow depth	33.0 cm (13.0 in)	32 of 100 (Routine)
Mullaley (Garrawilla)	Australia	Record daily precipitation	34.5 mm (1.4 in)	31 of 100 (Routine)
Mequatlingsnek	South Africa	Record daily precipitation	33.2 mm (1.3 in)	31 of 100 (Routine)
Groenvlei (Skl)	South Africa	Record daily precipitation	44.0 mm (1.7 in)	31 of 100 (Routine)
Mineral	United States	Record daily snowfall	30.5 cm (12.0 in)	31 of 100 (Routine)
Nevada City	United States	Record daily snowfall	6.4 cm (2.5 in)	31 of 100 (Routine)
Kokomo 3 WSW	United States	Record daily snowfall	5.1 cm (2.0 in)	31 of 100 (Routine)
Beowawe	United States	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Canton 4 SE	United States	Record snow depth	48.3 cm (19.0 in)	31 of 100 (Routine)
Windermere	Australia	Record daily precipitation	39.4 mm (1.6 in)	30 of 100 (Routine)
Loerie (Sar)	South Africa	Record daily precipitation	55.0 mm (2.2 in)	30 of 100 (Routine)
Henderson 8 SSW	United States	Record daily precipitation	32.0 mm (1.3 in)	30 of 100 (Routine)
Neptune 3 S	United States	Record daily precipitation	46.7 mm (1.8 in)	30 of 100 (Routine)
Bambaroo	Australia	Record daily precipitation	61.7 mm (2.4 in)	29 of 100 (Routine)
Graman (Ulupna)	Australia	Record daily precipitation	47.0 mm (1.9 in)	29 of 100 (Routine)
Huntington Lake	United States	Record snow depth	185.4 cm (73.0 in)	29 of 100 (Routine)
Allakaket	United States	Record high minimum temperature	-6.7 C (19.9 F)	29 of 100 (Routine)

Counts by Type and Timescale

547 records

Records set or tied on 21 December 1970 by type: Highest daily maximum 47, Lowest daily maximum 44, Highest daily minimum 45, Lowest daily minimum 58, Heaviest daily rainfall 264, Heaviest daily snowfall 56, Deepest snow cover 33.

Records on 21 December 1970 by type
Record type	Records
Highest daily maximum	47
Lowest daily maximum	44
Highest daily minimum	45
Lowest daily minimum	58
Heaviest daily rainfall	264
Heaviest daily snowfall	56
Deepest snow cover	33

Records on 21 December 1970 by timescale: all-time 1, monthly 11, daily 535.

How Much Records Were Beaten By

454 broken records

Margins by which the 454 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 711.0. Ties are not counted.

Top 20 by Significance

21 December 1970

Top 20 records on 21 December 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 December 1970	Walgett (Dungalear), AU	daily rain	58.9 mm (2.3 in)	45.9 mm (1.8 in)	80 years	64 of 100 (Major)
21 December 1970	Sitio Sao Geraldo, BR	all-time rain	302.5 mm (11.9 in)	180.1 mm (7.1 in)	0 years	63 of 100 (Major)
21 December 1970	Gwabegar Post Office, AU	daily rain	52.1 mm (2.1 in)	46.8 mm (1.8 in)	41 years	56 of 100 (Notable)
21 December 1970	Little Falls City Rsch, US	daily snow depth	55.9 cm (22.0 in)	30.5 cm (12.0 in)	67 years	56 of 100 (Notable)
21 December 1970	Squirrel Inn 2, US	daily snowfall	41.1 cm (16.2 in)	34.7 cm (13.7 in)	27 years	48 of 100 (Notable)
21 December 1970	Pilliga (Nirvana), AU	daily rain	45.2 mm (1.8 in)	32.5 mm (1.3 in)	56 years	46 of 100 (Notable)
21 December 1970	Adaven, US	monthly snowfall	45.7 cm (18.0 in)	15.2 cm (6.0 in)	33 years	46 of 100 (Notable)
21 December 1970	Koster (Pol), ZA	daily rain	78.5 mm (3.1 in)	41.9 mm (1.6 in)	29 years	45 of 100 (Notable)
21 December 1970	Huntington Lake, US	daily snowfall	61.0 cm (24.0 in)	35.6 cm (14.0 in)	44 years	45 of 100 (Notable)
21 December 1970	Coonabarabran (Namoi Street), AU	daily rain	43.2 mm (1.7 in)	24.1 mm (0.9 in)	56 years	44 of 100 (Notable)
21 December 1970	Riversul, BR	daily rain	87.2 mm (3.4 in)	62.0 mm (2.4 in)	4 years	44 of 100 (Notable)
21 December 1970	Ravenshill, ZA	daily rain	124.5 mm (4.9 in)	47.5 mm (1.9 in)	40 years	44 of 100 (Notable)
21 December 1970	Happy Camp Rs, US	daily snowfall	20.3 cm (8.0 in)	16.5 cm (6.5 in)	49 years	44 of 100 (Notable)
21 December 1970	Lexington Bluegrass AP, US	daily rain	52.6 mm (2.1 in)	23.6 mm (0.9 in)	44 years	44 of 100 (Notable)
21 December 1970	Tulloona (Coolanga), AU	daily rain	32.0 mm (1.3 in)	17.5 mm (0.7 in)	74 years	43 of 100 (Notable)
21 December 1970	Coonabarabran (Mia Mia), AU	daily rain	44.5 mm (1.8 in)	29.8 mm (1.2 in)	23 years	43 of 100 (Notable)
21 December 1970	Gagrskiy, GE	daily rain	55.1 mm (2.2 in)	38.4 mm (1.5 in)	32 years	43 of 100 (Notable)
21 December 1970	Grootmodderfontein, ZA	daily rain	34.0 mm (1.3 in)	26.9 mm (1.1 in)	36 years	43 of 100 (Notable)
21 December 1970	Hebel Store, AU	daily rain	27.2 mm (1.1 in)	22.1 mm (0.9 in)	64 years	42 of 100 (Notable)
21 December 1970	Canyon Dam, US	daily snowfall	33.0 cm (13.0 in)	25.4 cm (10.0 in)	49 years	42 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 547 records.

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

Records on 12-21 in each year
Year	Records
1793	1
1794	1
1799	1
1801	2
1808	3
1825	1
1828	1
1839	1
1846	1
1850	1
1855	7
1859	1
1860	1
1868	1
1870	1
1871	2
1874	2
1875	3
1876	1
1877	1
1878	1
1879	1
1880	1
1884	1
1886	3
1889	1
1890	4
1893	4
1894	1
1895	5
1896	3
1897	3
1898	1
1900	8
1901	15
1902	5
1903	25
1904	3
1905	15
1906	15
1907	17
1908	19
1909	20
1910	29
1911	36
1912	23
1913	11
1914	107
1915	43
1916	40
1917	18
1918	41
1919	57
1920	30
1921	104
1922	34
1923	323
1924	377
1925	120
1926	178
1927	147
1928	70
1929	156
1930	66
1931	556
1932	150
1933	581
1934	230
1935	398
1936	323
1937	189
1938	145
1939	140
1940	622
1941	651
1942	968
1943	148
1944	762
1945	396
1946	495
1947	700
1948	297
1949	1,281
1950	504
1951	1,061
1952	197
1953	256
1954	444
1955	888
1956	672
1957	846
1958	516
1959	272
1960	585
1961	254
1962	563
1963	1,137
1964	613
1965	247
1966	400
1967	1,923
1968	818
1969	828
1970	547
1971	680
1972	651
1973	1,292
1974	374
1975	548
1976	446
1977	470
1978	517
1979	558
1980	726
1981	1,476
1982	702
1983	3,324
1984	1,012
1985	979
1986	404
1987	775
1988	717
1989	3,203
1990	2,701
1991	1,125
1992	751
1993	967
1994	793
1995	878
1996	1,114
1997	810
1998	1,142
1999	851
2000	944
2001	650
2002	579
2003	1,103
2004	675
2005	606
2006	1,443
2007	946
2008	1,062
2009	1,097
2010	2,039
2011	653
2012	759
2013	1,029
2014	878
2015	1,173
2016	543
2017	459
2018	742
2019	755
2020	965
2021	323
2022	528
2023	1,170
2024	778
2025	1,100

Download the Data

Data for records on 1970-12-21: 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 2026-10-16 (16 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	433
100 to 200	15
200 to 300	1
300 to 400	3
400 to 500	0
500 to 600	0
600 to 700	1
700 to 800	1