Weather Records on 21 March 1966

464 weather records were set or tied worldwide on 21 March 1966. Highest significance: Petropavlovsk-Kamchatskij, RU.

Key Facts for 21 March 1966

On 21 March 1966, 464 weather records were set or tied at long-record stations worldwide.
143 were record highs and 62 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 453 daily.
Petropavlovsk-Kamchatskij set a daily record precipitation of 47.7 mm (1.9 in) on 21 March 1966.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 483 records.

Record Map

464 stations

464 station records on 21 March 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 March 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Petropavlovsk-Kamchatskij	Russia	Record daily precipitation	47.7 mm (1.9 in)	61 of 100 (Major)
Baddeck	Canada	Record daily precipitation	66.0 mm (2.6 in)	56 of 100 (Notable)
Melton Mowbray (Lovely Banks)	Australia	Record daily precipitation	41.1 mm (1.6 in)	55 of 100 (Notable)
Sharpes Siding	Australia	Record daily precipitation	51.1 mm (2.0 in)	55 of 100 (Notable)
Ellensburg	United States	Record daily snowfall	7.6 cm (3.0 in)	53 of 100 (Notable)
Boonah Stark Ave	Australia	Record daily precipitation	66.5 mm (2.6 in)	52 of 100 (Notable)
Ulmarra (Newsagency)	Australia	Record daily precipitation	62.0 mm (2.4 in)	52 of 100 (Notable)
Woorarra	Australia	Record daily precipitation	98.8 mm (3.9 in)	50 of 100 (Notable)
Odessa	United States	Record daily snowfall	6.4 cm (2.5 in)	49 of 100 (Notable)
Spokane Intl AP	United States	Record daily snowfall	9.9 cm (3.9 in)	48 of 100 (Notable)
Goomboorian	Australia	Record daily precipitation	93.0 mm (3.7 in)	47 of 100 (Notable)
Goombungee Post Office	Australia	Record daily precipitation	60.7 mm (2.4 in)	46 of 100 (Notable)
Westbrook	Australia	Record daily precipitation	61.0 mm (2.4 in)	46 of 100 (Notable)
Dayton 1 WSW	United States	Record snow depth	10.2 cm (4.0 in)	46 of 100 (Notable)
Mill Creek	United States	Record daily snowfall	43.2 cm (17.0 in)	46 of 100 (Notable)
Gowrie Junction	Australia	Record daily precipitation	42.7 mm (1.7 in)	43 of 100 (Notable)
Dushanbe	Tajikistan	Record daily precipitation	42.6 mm (1.7 in)	42 of 100 (Notable)
Hyannis	United States	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Oatlands (Bow Hill)	Australia	Record daily precipitation	36.8 mm (1.4 in)	39 of 100 (Notable)
Davenport	United States	Record daily snowfall	10.2 cm (4.0 in)	39 of 100 (Notable)
Walden	United States	Record daily snowfall	8.9 cm (3.5 in)	37 of 100 (Notable)
Waterville	United States	Record daily snowfall	15.2 cm (6.0 in)	36 of 100 (Notable)
Forest Hill	Australia	Record daily precipitation	28.4 mm (1.1 in)	35 of 100 (Notable)
Chiloquin 1 E	United States	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Mantuan Downs	Australia	Record daily precipitation	37.3 mm (1.5 in)	34 of 100 (Routine)
Saint Maries	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Holdenville 2SSE	United States	Record high minimum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Sandy Creek	Australia	Record daily precipitation	71.1 mm (2.8 in)	33 of 100 (Routine)
Jericho (Bowsden)	Australia	Record daily precipitation	29.7 mm (1.2 in)	33 of 100 (Routine)
Buckley 1 NE	United States	Record daily snowfall	5.1 cm (2.0 in)	32 of 100 (Routine)
Crows Nest	Australia	Record daily precipitation	28.2 mm (1.1 in)	31 of 100 (Routine)
Bjelasnica	Bosnia and Herzegovina	Record low minimum temperature	-14.8 C (5.4 F)	31 of 100 (Routine)
Bell Ranch	United States	Record high minimum temperature	11.1 C (52.0 F)	30 of 100 (Routine)
Pittsworth	Australia	Record daily precipitation	45.7 mm (1.8 in)	29 of 100 (Routine)
Pleasant Valley	United States	Record daily snowfall	10.2 cm (4.0 in)	29 of 100 (Routine)
Bend	United States	Record daily snowfall	8.1 cm (3.2 in)	29 of 100 (Routine)
Leyburn Post Office	Australia	Record daily precipitation	35.3 mm (1.4 in)	28 of 100 (Routine)
Baddeck	Canada	Record high minimum temperature	4.4 C (39.9 F)	28 of 100 (Routine)
Paducah	United States	Record high maximum temperature	28.9 C (84.0 F)	28 of 100 (Routine)
Artesia 6S	United States	Record high minimum temperature	13.9 C (57.0 F)	28 of 100 (Routine)
Purcell 2 SW	United States	Record high minimum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Headworks Portland Wtr B	United States	Record daily snowfall	5.1 cm (2.0 in)	28 of 100 (Routine)
Darrington Rs	United States	Record daily snowfall	5.1 cm (2.0 in)	28 of 100 (Routine)
Palmer 3 ESE	United States	Record daily snowfall	15.2 cm (6.0 in)	28 of 100 (Routine)
Saint Paul Is AP	United States	Record daily snowfall	7.4 cm (2.9 in)	28 of 100 (Routine)
Jondaryan Post Office	Australia	Record daily precipitation	61.2 mm (2.4 in)	27 of 100 (Routine)
York Plains (Handroyd)	Australia	Record daily precipitation	34.0 mm (1.3 in)	27 of 100 (Routine)
Parrsboro	Canada	Record high minimum temperature	3.9 C (39.0 F)	27 of 100 (Routine)
Belle Isle	Canada	Record high minimum temperature	-0.6 C (30.9 F)	27 of 100 (Routine)
Lonepine 1 WNW	United States	Record daily snowfall	5.1 cm (2.0 in)	27 of 100 (Routine)
Port Hastings	Canada	Record high minimum temperature	2.2 C (36.0 F)	26 of 100 (Routine)
Hennessey 4 ESE	United States	Record high minimum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Colorado City	United States	Record high minimum temperature	17.2 C (63.0 F)	26 of 100 (Routine)
Memphis	United States	Record high minimum temperature	14.4 C (57.9 F)	26 of 100 (Routine)
Salisbury Bowls Club	Australia	Record daily precipitation	31.8 mm (1.3 in)	25 of 100 (Routine)
Kingfisher	United States	Record high minimum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Richland	United States	Record high minimum temperature	6.1 C (43.0 F)	25 of 100 (Routine)
Buckley 1 NE	United States	Record low minimum temperature	-3.9 C (25.0 F)	25 of 100 (Routine)
Lake Kachess	United States	Record daily snowfall	20.3 cm (8.0 in)	25 of 100 (Routine)
Seward AP	United States	Record daily snowfall	12.7 cm (5.0 in)	25 of 100 (Routine)

Counts by Type and Timescale

464 records

Records set or tied on 21 March 1966 by type: Highest daily maximum 42, Lowest daily maximum 35, Highest daily minimum 101, Lowest daily minimum 27, Heaviest daily rainfall 190, Heaviest daily snowfall 56, Deepest snow cover 13.

Records on 21 March 1966 by type
Record type	Records
Highest daily maximum	42
Lowest daily maximum	35
Highest daily minimum	101
Lowest daily minimum	27
Heaviest daily rainfall	190
Heaviest daily snowfall	56
Deepest snow cover	13

Records on 21 March 1966 by timescale: all-time 0, monthly 11, daily 453.

How Much Records Were Beaten By

374 broken records

Margins by which the 374 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 153.0. Ties are not counted.

Top 20 by Significance

21 March 1966

Top 20 records on 21 March 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 1966	Petropavlovsk-Kamchatskij, RU	daily rain	47.7 mm (1.9 in)	35.1 mm (1.4 in)	47 years	61 of 100 (Major)
21 March 1966	Baddeck, CA	daily rain	66.0 mm (2.6 in)	44.9 mm (1.8 in)	25 years	56 of 100 (Notable)
21 March 1966	Melton Mowbray (Lovely Banks), AU	daily rain	41.1 mm (1.6 in)	25.4 mm (1.0 in)	37 years	55 of 100 (Notable)
21 March 1966	Sharpes Siding, AU	daily rain	51.1 mm (2.0 in)	40.7 mm (1.6 in)	33 years	55 of 100 (Notable)
21 March 1966	Ellensburg, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	70 years	53 of 100 (Notable)
21 March 1966	Boonah Stark Ave, AU	daily rain	66.5 mm (2.6 in)	46.9 mm (1.8 in)	64 years	52 of 100 (Notable)
21 March 1966	Ulmarra (Newsagency), AU	daily rain	62.0 mm (2.4 in)	38.4 mm (1.5 in)	72 years	52 of 100 (Notable)
21 March 1966	Woorarra, AU	daily rain	98.8 mm (3.9 in)	67.0 mm (2.6 in)	28 years	50 of 100 (Notable)
21 March 1966	Odessa, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	63 years	49 of 100 (Notable)
21 March 1966	Spokane Intl AP, US	daily snowfall	9.9 cm (3.9 in)	5.8 cm (2.3 in)	66 years	48 of 100 (Notable)
21 March 1966	Goomboorian, AU	daily rain	93.0 mm (3.7 in)	72.2 mm (2.8 in)	39 years	47 of 100 (Notable)
21 March 1966	Goombungee Post Office, AU	daily rain	60.7 mm (2.4 in)	31.5 mm (1.2 in)	56 years	46 of 100 (Notable)
21 March 1966	Westbrook, AU	daily rain	61.0 mm (2.4 in)	33.1 mm (1.3 in)	56 years	46 of 100 (Notable)
21 March 1966	Dayton 1 WSW, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	35 years	46 of 100 (Notable)
21 March 1966	Mill Creek, US	monthly snowfall	43.2 cm (17.0 in)	15.3 cm (6.0 in)	15 years	46 of 100 (Notable)
21 March 1966	Gowrie Junction, AU	daily rain	42.7 mm (1.7 in)	28.5 mm (1.1 in)	64 years	43 of 100 (Notable)
21 March 1966	Dushanbe, TJ	daily rain	42.6 mm (1.7 in)	24.9 mm (1.0 in)	36 years	42 of 100 (Notable)
21 March 1966	Hyannis, US	daily rain	25.4 mm (1.0 in)	19.8 mm (0.8 in)	25 years	40 of 100 (Notable)
21 March 1966	Oatlands (Bow Hill), AU	daily rain	36.8 mm (1.4 in)	25.4 mm (1.0 in)	37 years	39 of 100 (Notable)
21 March 1966	Davenport, US	daily snowfall	10.2 cm (4.0 in)	6.4 cm (2.5 in)	49 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

1797 to 1966

Records set or tied on this calendar date in each year from 1797 to 1966. 1966 had 464 records.

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

Records on 03-21 in each year
Year	Records
1797	2
1805	1
1806	1
1822	1
1830	1
1836	1
1837	1
1845	1
1846	1
1850	1
1852	2
1857	1
1865	7
1874	1
1877	1
1880	1
1881	1
1883	2
1884	1
1885	5
1886	2
1888	1
1890	3
1892	1
1893	1
1894	1
1895	1
1896	2
1897	2
1898	3
1899	4
1900	4
1901	9
1902	18
1903	23
1904	17
1905	6
1906	3
1907	14
1908	3
1909	11
1910	10
1911	10
1912	36
1913	97
1914	71
1915	27
1916	44
1917	43
1918	43
1919	29
1920	90
1921	96
1922	50
1923	72
1924	96
1925	141
1926	282
1927	179
1928	293
1929	104
1930	99
1931	638
1932	305
1933	235
1934	114
1935	675
1936	225
1937	172
1938	783
1939	280
1940	366
1941	311
1942	330
1943	217
1944	556
1945	294
1946	570
1947	192
1948	948
1949	330
1950	398
1951	779
1952	689
1953	342
1954	211
1955	1,124
1956	686
1957	373
1958	619
1959	230
1960	892
1961	268
1962	548
1963	298
1964	333
1965	1,961
1966	464
1967	487
1968	798
1969	219
1970	612
1971	358
1972	519
1973	385
1974	1,097
1975	751
1976	710
1977	376
1978	838
1979	656
1980	775
1981	676
1982	850
1983	1,673
1984	835
1985	503
1986	1,170
1987	948
1988	1,155
1989	1,396
1990	1,380
1991	1,446
1992	877
1993	687
1994	684
1995	1,141
1996	1,119
1997	1,670
1998	935
1999	1,044
2000	802
2001	1,342
2002	1,593
2003	1,073
2004	1,511
2005	649
2006	1,417
2007	1,220
2008	734
2009	558
2010	1,134
2011	1,451
2012	2,854
2013	727
2014	639
2015	568
2016	553
2017	1,117
2018	809
2019	649
2020	445
2021	489
2022	615
2023	815
2024	432
2025	845
2026	2,614

Download the Data

Data for records on 1966-03-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	309
20 to 40	35
40 to 60	14
60 to 80	10
80 to 100	2
100 to 120	2
120 to 140	0
140 to 160	2