Weather Records on 21 March 1973

385 weather records were set or tied worldwide on 21 March 1973. Highest significance: Ntazepetrovsk, RU.

Key Facts for 21 March 1973

On 21 March 1973, 385 weather records were set or tied at long-record stations worldwide.
103 were record highs and 68 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 379 daily.
Ntazepetrovsk set a monthly record daily precipitation of 33.3 mm (1.3 in) on 21 March 1973.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 483 records.

Record Map

385 stations

385 station records on 21 March 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 March 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ntazepetrovsk	Russia	Record daily precipitation	33.3 mm (1.3 in)	64 of 100 (Major)
Scottsbluff W B Heilig Fld AP	United States	Record daily precipitation	27.7 mm (1.1 in)	61 of 100 (Major)
Ft Washakie 1 SE	United States	Record snow depth	40.6 cm (16.0 in)	50 of 100 (Notable)
Goode Island Lighthouse	Australia	Record daily precipitation	175.8 mm (6.9 in)	49 of 100 (Notable)
Murcia/Alcantarilla	Spain	Record daily precipitation	36.0 mm (1.4 in)	47 of 100 (Notable)
Broadholm	South Africa	Record daily precipitation	65.0 mm (2.6 in)	46 of 100 (Notable)
Wells	United States	Record daily snowfall	21.1 cm (8.3 in)	46 of 100 (Notable)
Chaco Canyon Natl Mon	United States	Record daily snowfall	5.1 cm (2.0 in)	42 of 100 (Notable)
Sage 4 NNW	United States	Record daily snowfall	12.7 cm (5.0 in)	39 of 100 (Notable)
Deland 1 SSE	United States	Record daily precipitation	39.6 mm (1.6 in)	38 of 100 (Notable)
Uniao	Brazil	Record daily precipitation	64.0 mm (2.5 in)	37 of 100 (Notable)
Annapolis US Naval Aca	United States	Record low minimum temperature	-7.2 C (19.0 F)	35 of 100 (Notable)
Adrian 2 NNE	United States	Record snow depth	10.2 cm (4.0 in)	35 of 100 (Notable)
Liafoss	Norway	Record daily precipitation	70.1 mm (2.8 in)	34 of 100 (Routine)
Karlshamn	Sweden	Record high maximum temperature	14.6 C (58.3 F)	34 of 100 (Routine)
Richmond C/K (Tnk)	South Africa	Record daily precipitation	32.5 mm (1.3 in)	33 of 100 (Routine)
Santa Paula	United States	Record low maximum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
Denair 3 NNE	United States	Record low maximum temperature	10.0 C (50.0 F)	31 of 100 (Routine)
Newman	United States	Record low maximum temperature	11.7 C (53.1 F)	31 of 100 (Routine)
Ft Valley	United States	Record daily snowfall	17.8 cm (7.0 in)	29 of 100 (Routine)
Dudleys	United States	Record low maximum temperature	2.8 C (37.0 F)	29 of 100 (Routine)
Mia Mia	Australia	Record daily precipitation	29.0 mm (1.1 in)	28 of 100 (Routine)
Wynbring Siding (Tar 377 Mile)	Australia	Record daily precipitation	26.4 mm (1.0 in)	28 of 100 (Routine)
Jerome	United States	Record daily precipitation	25.7 mm (1.0 in)	28 of 100 (Routine)
Barton	Australia	Record daily precipitation	26.4 mm (1.0 in)	27 of 100 (Routine)
Porto Firme	Brazil	Record daily precipitation	37.0 mm (1.5 in)	27 of 100 (Routine)
Attenkam	Germany	Record snow depth	26.0 cm (10.2 in)	27 of 100 (Routine)
Electra P H	United States	Record low maximum temperature	8.3 C (46.9 F)	27 of 100 (Routine)
Ames	United States	Record daily snowfall	25.4 cm (10.0 in)	27 of 100 (Routine)
Lemon Cove	United States	Record low maximum temperature	11.7 C (53.1 F)	25 of 100 (Routine)
San Andres	Mexico	Record high minimum temperature	24.4 C (75.9 F)	24 of 100 (Routine)
Oakley	United States	Record snow depth	10.2 cm (4.0 in)	24 of 100 (Routine)
Boulia Airport	Australia	Record high minimum temperature	28.2 C (82.8 F)	23 of 100 (Routine)
Guarani	Brazil	Record daily precipitation	35.6 mm (1.4 in)	23 of 100 (Routine)
Bratsk	Russia	Record high minimum temperature	-1.4 C (29.5 F)	23 of 100 (Routine)
North River Dam	United States	Record daily snowfall	5.1 cm (2.0 in)	23 of 100 (Routine)
Sundance	United States	Record high minimum temperature	1.7 C (35.1 F)	23 of 100 (Routine)
Nguiu	Australia	Record daily precipitation	74.9 mm (2.9 in)	22 of 100 (Routine)
Kaslo	Canada	Record high minimum temperature	3.3 C (37.9 F)	22 of 100 (Routine)
Tuzigoot Nm	United States	Record low maximum temperature	11.7 C (53.1 F)	22 of 100 (Routine)
Williams	United States	Record daily snowfall	10.2 cm (4.0 in)	22 of 100 (Routine)
Auberry 2 NW	United States	Record low maximum temperature	6.7 C (44.1 F)	22 of 100 (Routine)
Placerville	United States	Record low maximum temperature	6.1 C (43.0 F)	22 of 100 (Routine)
Wyloo	Australia	Record daily precipitation	26.7 mm (1.1 in)	21 of 100 (Routine)
Dubbo (Darling Street)	Australia	Record high minimum temperature	20.8 C (69.4 F)	21 of 100 (Routine)
Torreoes	Brazil	Record daily precipitation	45.0 mm (1.8 in)	21 of 100 (Routine)
Huajuapan de Leon (Smn)	Mexico	Record high minimum temperature	15.6 C (60.1 F)	21 of 100 (Routine)
Blaauwkop	South Africa	Record daily precipitation	29.5 mm (1.2 in)	21 of 100 (Routine)
Quartzsite	United States	Record low maximum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Tiger Creek Ph	United States	Record daily snowfall	7.6 cm (3.0 in)	21 of 100 (Routine)
Modesto AP	United States	Record low maximum temperature	9.4 C (48.9 F)	21 of 100 (Routine)
Sacramento 5 ESE	United States	Record low maximum temperature	8.9 C (48.0 F)	21 of 100 (Routine)
Cherdyn'	Russia	Record daily precipitation	16.1 mm (0.6 in)	20 of 100 (Routine)
Oakley	United States	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Shoshone 1 WNW	United States	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Duchesne	United States	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Hazelton	United States	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Tuba City	United States	Record daily snowfall	3.3 cm (1.3 in)	20 of 100 (Routine)
Almeria	Spain	Record daily precipitation	20.0 mm (0.8 in)	20 of 100 (Routine)
Caldwell	United States	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)

Counts by Type and Timescale

385 records

Records set or tied on 21 March 1973 by type: Highest daily maximum 22, Lowest daily maximum 52, Highest daily minimum 81, Lowest daily minimum 16, Heaviest daily rainfall 160, Heaviest daily snowfall 37, Deepest snow cover 17.

Records on 21 March 1973 by type
Record type	Records
Highest daily maximum	22
Lowest daily maximum	52
Highest daily minimum	81
Lowest daily minimum	16
Heaviest daily rainfall	160
Heaviest daily snowfall	37
Deepest snow cover	17

Records on 21 March 1973 by timescale: all-time 0, monthly 6, daily 379.

How Much Records Were Beaten By

299 broken records

Margins by which the 299 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 330.0. Ties are not counted.

Top 20 by Significance

21 March 1973

Top 20 records on 21 March 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 1973	Ntazepetrovsk, RU	monthly rain	33.3 mm (1.3 in)	21.0 mm (0.8 in)	36 years	64 of 100 (Major)
21 March 1973	Scottsbluff W B Heilig Fld AP, US	daily rain	27.7 mm (1.1 in)	20.6 mm (0.8 in)	44 years	61 of 100 (Major)
21 March 1973	Ft Washakie 1 SE, US	daily snow depth	40.6 cm (16.0 in)	33.0 cm (13.0 in)	20 years	50 of 100 (Notable)
21 March 1973	Goode Island Lighthouse, AU	daily rain	175.8 mm (6.9 in)	104.7 mm (4.1 in)	20 years	49 of 100 (Notable)
21 March 1973	Murcia/Alcantarilla, ES	daily rain	36.0 mm (1.4 in)	34.6 mm (1.4 in)	16 years	47 of 100 (Notable)
21 March 1973	Broadholm, ZA	daily rain	65.0 mm (2.6 in)	39.6 mm (1.6 in)	32 years	46 of 100 (Notable)
21 March 1973	Wells, US	daily snowfall	21.1 cm (8.3 in)	10.9 cm (4.3 in)	71 years	46 of 100 (Notable)
21 March 1973	Chaco Canyon Natl Mon, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	63 years	42 of 100 (Notable)
21 March 1973	Sage 4 NNW, US	daily snowfall	12.7 cm (5.0 in)	12.2 cm (4.8 in)	22 years	39 of 100 (Notable)
21 March 1973	Deland 1 SSE, US	daily rain	39.6 mm (1.6 in)	25.1 mm (1.0 in)	40 years	38 of 100 (Notable)
21 March 1973	Uniao, BR	daily rain	64.0 mm (2.5 in)	41.5 mm (1.6 in)	32 years	37 of 100 (Notable)
21 March 1973	Annapolis US Naval Aca, US	daily low min	-7.2 C (19.0 F)	3.3 C (5.9 F)	67 years	35 of 100 (Notable)
21 March 1973	Adrian 2 NNE, US	daily snow depth	10.2 cm (4.0 in)	5.1 cm (2.0 in)	72 years	35 of 100 (Notable)
21 March 1973	Liafoss, NO	daily rain	70.1 mm (2.8 in)	25.0 mm (1.0 in)	20 years	34 of 100 (Routine)
21 March 1973	Karlshamn, SE	daily high max	14.6 C (58.3 F)	1.1 C (2.0 F)	78 years	34 of 100 (Routine)
21 March 1973	Richmond C/K (Tnk), ZA	daily rain	32.5 mm (1.3 in)	10.9 mm (0.4 in)	52 years	33 of 100 (Routine)
21 March 1973	Santa Paula, US	daily low max	13.9 C (57.0 F)	0.5 C (0.9 F)	77 years	32 of 100 (Routine)
21 March 1973	Denair 3 NNE, US	daily low max	10.0 C (50.0 F)	2.2 C (4.0 F)	64 years	31 of 100 (Routine)
21 March 1973	Newman, US	daily low max	11.7 C (53.1 F)	2.2 C (4.0 F)	66 years	31 of 100 (Routine)
21 March 1973	Ft Valley, US	daily snowfall	17.8 cm (7.0 in)	10.2 cm (4.0 in)	40 years	29 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

1797 to 1973

Records set or tied on this calendar date in each year from 1797 to 1973. 1973 had 385 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 1973-03-21: 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 2026-10-14 (14 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 50	282
50 to 100	10
100 to 150	5
150 to 200	1
200 to 250	0
250 to 300	0
300 to 350	1