Weather Records on 21 March 1930

99 weather records were set or tied worldwide on 21 March 1930. Highest significance: Mardie, AU.

Key Facts for 21 March 1930

On 21 March 1930, 99 weather records were set or tied at long-record stations worldwide.
19 were record highs and 18 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 1 monthly and 97 daily.
Mardie set an all-time record daily precipitation of 172.2 mm (6.8 in) on 21 March 1930.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 485 records.

Record Map

99 stations

99 station records on 21 March 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 March 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mardie	Australia	Record daily precipitation	172.2 mm (6.8 in)	51 of 100 (Notable)
Mungindi (Burrenbah)	Australia	Record daily precipitation	44.5 mm (1.8 in)	42 of 100 (Notable)
Margate Collins St	Australia	Record daily precipitation	138.4 mm (5.4 in)	38 of 100 (Notable)
Cumbalum (Fairview)	Australia	Record daily precipitation	109.0 mm (4.3 in)	38 of 100 (Notable)
Ballina (Crowley Village)	Australia	Record daily precipitation	84.1 mm (3.3 in)	35 of 100 (Notable)
Rowena (Bunna Bunna)	Australia	Record daily precipitation	39.6 mm (1.6 in)	33 of 100 (Routine)
Snoqualmie Falls	United States	Record daily precipitation	46.5 mm (1.8 in)	32 of 100 (Routine)
Waxahachie	United States	Record daily precipitation	52.1 mm (2.1 in)	31 of 100 (Routine)
Peedamullah	Australia	Record daily precipitation	96.0 mm (3.8 in)	30 of 100 (Routine)
Chicoutimi	Canada	Record daily snowfall	15.2 cm (6.0 in)	30 of 100 (Routine)
Roebourne	Australia	Record daily precipitation	132.6 mm (5.2 in)	29 of 100 (Routine)
Southport Ridgeway Ave	Australia	Record daily precipitation	54.1 mm (2.1 in)	28 of 100 (Routine)
Millie	Australia	Record daily precipitation	29.5 mm (1.2 in)	27 of 100 (Routine)
Astoria	United States	Record daily precipitation	53.1 mm (2.1 in)	27 of 100 (Routine)
Portland Rfc City	United States	Record daily precipitation	31.5 mm (1.2 in)	27 of 100 (Routine)
Herberton White St	Australia	Record daily precipitation	50.3 mm (2.0 in)	25 of 100 (Routine)
Byron Bay (Jacaranda Drive)	Australia	Record daily precipitation	81.3 mm (3.2 in)	24 of 100 (Routine)
Cedarville	United States	Record high minimum temperature	8.9 C (48.0 F)	24 of 100 (Routine)
College STN 6 SW	United States	Record daily precipitation	40.4 mm (1.6 in)	24 of 100 (Routine)
Olympia Priest Pt Park	United States	Record daily precipitation	38.6 mm (1.5 in)	24 of 100 (Routine)
Woodburn Post Office	Australia	Record daily precipitation	44.7 mm (1.8 in)	22 of 100 (Routine)
Haparanda	Sweden	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Bjuroklubb	Sweden	Record daily precipitation	14.8 mm (0.6 in)	20 of 100 (Routine)
Chicoutimi	Canada	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Holmogadd A	Sweden	Record daily precipitation	8.7 mm (0.34 in)	20 of 100 (Routine)
Sviland	Norway	Record snow depth	15.0 cm (5.9 in)	20 of 100 (Routine)
Caloundra Signal Station	Australia	Record daily precipitation	50.3 mm (2.0 in)	19 of 100 (Routine)
Chilliwack	Canada	Record daily precipitation	27.7 mm (1.1 in)	19 of 100 (Routine)
Dayton 1 WSW	United States	Record daily precipitation	16.0 mm (0.6 in)	19 of 100 (Routine)
Oran-Hopital Militaire	Algeria	Record high maximum temperature	27.0 C (80.6 F)	18 of 100 (Routine)
Perth Regional Office	Australia	Record high maximum temperature	37.0 C (98.6 F)	18 of 100 (Routine)
Port Augusta (Nectar Brook)	Australia	Record daily precipitation	2.0 mm (0.08 in)	18 of 100 (Routine)
Tenterfield (Federation Park)	Australia	Record daily precipitation	20.8 mm (0.8 in)	18 of 100 (Routine)
Beaver Lake	Canada	Record daily precipitation	21.6 mm (0.9 in)	18 of 100 (Routine)
Abitibi Post	Canada	Record low maximum temperature	-12.2 C (10.0 F)	18 of 100 (Routine)
Rauland	Norway	Record daily precipitation	13.4 mm (0.5 in)	18 of 100 (Routine)
Setif	Algeria	Record high maximum temperature	23.0 C (73.4 F)	17 of 100 (Routine)
Mogil Mogil (Benimora)	Australia	Record daily precipitation	10.2 mm (0.4 in)	17 of 100 (Routine)
Rutherglen	Canada	Record low maximum temperature	-9.4 C (15.1 F)	17 of 100 (Routine)
Sarna	Sweden	Record daily precipitation	2.8 mm (0.11 in)	16 of 100 (Routine)
Prineville	United States	Record high minimum temperature	6.7 C (44.1 F)	16 of 100 (Routine)
Gold Creek Reservoir	Australia	Record daily precipitation	31.8 mm (1.3 in)	15 of 100 (Routine)
Pinkenba	Australia	Record daily precipitation	49.8 mm (2.0 in)	15 of 100 (Routine)
Ai-Petri	Ukraine	Record high minimum temperature	7.5 C (45.5 F)	15 of 100 (Routine)
Harrisville	United States	Record low minimum temperature	-12.8 C (9.0 F)	15 of 100 (Routine)
Vancouver 4 NNE	United States	Record daily precipitation	16.8 mm (0.7 in)	15 of 100 (Routine)
Algiers-Ville/Universite	Algeria	Record high maximum temperature	25.0 C (77.0 F)	14 of 100 (Routine)
Perth Regional Office	Australia	Record high minimum temperature	26.6 C (79.9 F)	14 of 100 (Routine)
Dunwich Post Office	Australia	Record daily precipitation	64.3 mm (2.5 in)	14 of 100 (Routine)
Niznij Novgorod	Russia	Record daily precipitation	9.2 mm (0.36 in)	14 of 100 (Routine)
Kiruna	Sweden	Record daily precipitation	3.6 mm (0.14 in)	14 of 100 (Routine)
Enoggera Reservoir	Australia	Record daily precipitation	25.4 mm (1.0 in)	13 of 100 (Routine)
Tewantin Post Office	Australia	Record low maximum temperature	21.7 C (71.1 F)	13 of 100 (Routine)
Goldstream Lake	Canada	Record daily precipitation	40.1 mm (1.6 in)	13 of 100 (Routine)
Galway	Ireland	Record low minimum temperature	-3.9 C (25.0 F)	13 of 100 (Routine)
Timovskoe	Russia	Record high minimum temperature	-3.9 C (25.0 F)	13 of 100 (Routine)
Simferopol	Ukraine	Record high minimum temperature	10.4 C (50.7 F)	13 of 100 (Routine)
Hewitt	United States	Record daily precipitation	14.2 mm (0.6 in)	13 of 100 (Routine)
Indooroopilly Bowls Club	Australia	Record daily precipitation	28.2 mm (1.1 in)	12 of 100 (Routine)
Yallaroi	Australia	Record daily precipitation	40.9 mm (1.6 in)	12 of 100 (Routine)

Counts by Type and Timescale

99 records

Records set or tied on 21 March 1930 by type: Highest daily maximum 4, Lowest daily maximum 6, Highest daily minimum 15, Lowest daily minimum 12, Heaviest daily rainfall 59, Heaviest daily snowfall 2, Deepest snow cover 1.

Records on 21 March 1930 by type
Record type	Records
Highest daily maximum	4
Lowest daily maximum	6
Highest daily minimum	15
Lowest daily minimum	12
Heaviest daily rainfall	59
Heaviest daily snowfall	2
Deepest snow cover	1

Records on 21 March 1930 by timescale: all-time 1, monthly 1, daily 97.

How Much Records Were Beaten By

87 broken records

Margins by which the 87 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 84.3. Ties are not counted.

Top 20 by Significance

21 March 1930

Top 20 records on 21 March 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 1930	Mardie, AU	all-time rain	172.2 mm (6.8 in)	50.3 mm (2.0 in)	14 years	51 of 100 (Notable)
21 March 1930	Mungindi (Burrenbah), AU	daily rain	44.5 mm (1.8 in)	41.5 mm (1.6 in)	28 years	42 of 100 (Notable)
21 March 1930	Margate Collins St, AU	daily rain	138.4 mm (5.4 in)	62.2 mm (2.4 in)	28 years	38 of 100 (Notable)
21 March 1930	Cumbalum (Fairview), AU	daily rain	109.0 mm (4.3 in)	62.0 mm (2.4 in)	23 years	38 of 100 (Notable)
21 March 1930	Ballina (Crowley Village), AU	daily rain	84.1 mm (3.3 in)	51.6 mm (2.0 in)	28 years	35 of 100 (Notable)
21 March 1930	Rowena (Bunna Bunna), AU	daily rain	39.6 mm (1.6 in)	27.4 mm (1.1 in)	29 years	33 of 100 (Routine)
21 March 1930	Snoqualmie Falls, US	daily rain	46.5 mm (1.8 in)	20.8 mm (0.8 in)	8 years	32 of 100 (Routine)
21 March 1930	Waxahachie, US	daily rain	52.1 mm (2.1 in)	35.8 mm (1.4 in)	4 years	31 of 100 (Routine)
21 March 1930	Peedamullah, AU	daily rain	96.0 mm (3.8 in)	63.2 mm (2.5 in)	8 years	30 of 100 (Routine)
21 March 1930	Chicoutimi, CA	daily snowfall	15.2 cm (6.0 in)	5.0 cm (2.0 in)	52 years	30 of 100 (Routine)
21 March 1930	Roebourne, AU	daily rain	132.6 mm (5.2 in)	84.3 mm (3.3 in)	8 years	29 of 100 (Routine)
21 March 1930	Southport Ridgeway Ave, AU	daily rain	54.1 mm (2.1 in)	34.0 mm (1.3 in)	36 years	28 of 100 (Routine)
21 March 1930	Millie, AU	daily rain	29.5 mm (1.2 in)	22.6 mm (0.9 in)	27 years	27 of 100 (Routine)
21 March 1930	Astoria, US	daily rain	53.1 mm (2.1 in)	15.0 mm (0.6 in)	34 years	27 of 100 (Routine)
21 March 1930	Portland Rfc City, US	daily rain	31.5 mm (1.2 in)	4.1 mm (0.16 in)	54 years	27 of 100 (Routine)
21 March 1930	Herberton White St, AU	daily rain	50.3 mm (2.0 in)	35.6 mm (1.4 in)	20 years	25 of 100 (Routine)
21 March 1930	Byron Bay (Jacaranda Drive), AU	daily rain	81.3 mm (3.2 in)	33.0 mm (1.3 in)	28 years	24 of 100 (Routine)
21 March 1930	Cedarville, US	monthly high min	8.9 C (48.0 F)	0.6 C (1.1 F)	33 years	24 of 100 (Routine)
21 March 1930	College STN 6 SW, US	daily rain	40.4 mm (1.6 in)	25.9 mm (1.0 in)	4 years	24 of 100 (Routine)
21 March 1930	Olympia Priest Pt Park, US	daily rain	38.6 mm (1.5 in)	15.0 mm (0.6 in)	13 years	24 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 1930

Records set or tied on this calendar date in each year from 1797 to 1930. 1930 had 99 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 1930-03-21: 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 20	68
20 to 40	10
40 to 60	4
60 to 80	4
80 to 100	1