Weather Records on 30 May 1973

391 weather records were set or tied worldwide on 30 May 1973. Highest significance: Acude Varzea da Volta, BR.

Key Facts for 30 May 1973

On 30 May 1973, 391 weather records were set or tied at long-record stations worldwide.
161 were record highs and 126 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 19 monthly and 371 daily.
Acude Varzea da Volta set a daily record precipitation of 72.1 mm (2.8 in) on 30 May 1973.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 439 records.

Record Map

391 stations

391 station records on 30 May 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Acude Varzea da Volta	Brazil	Record daily precipitation	72.1 mm (2.8 in)	58 of 100 (Notable)
Lake City 2 E	United States	Record daily precipitation	87.1 mm (3.4 in)	56 of 100 (Notable)
Grand Lake 1 NW	United States	Record daily snowfall	15.2 cm (6.0 in)	47 of 100 (Notable)
Svijagino	Russia	Record daily precipitation	42.0 mm (1.7 in)	44 of 100 (Notable)
Placerville	United States	Record high minimum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Georgetown	United States	Record daily snowfall	15.2 cm (6.0 in)	42 of 100 (Notable)
Valujki	Russia	Record daily precipitation	38.7 mm (1.5 in)	41 of 100 (Notable)
Martinsdale 3 NNW	United States	Record low minimum temperature	-3.9 C (25.0 F)	41 of 100 (Notable)
Sumy	Ukraine	Record daily precipitation	26.9 mm (1.1 in)	40 of 100 (Notable)
Walnut Creek 2 ESE	United States	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Paulding	United States	Record daily precipitation	37.6 mm (1.5 in)	38 of 100 (Notable)
Orlando Executive AP	United States	Record daily precipitation	57.4 mm (2.3 in)	36 of 100 (Notable)
Gigant	Russia	Record daily precipitation	33.4 mm (1.3 in)	35 of 100 (Notable)
Warner Springs	United States	Record high maximum temperature	38.9 C (102.0 F)	35 of 100 (Notable)
Boulder	United States	Record low minimum temperature	1.1 C (34.0 F)	35 of 100 (Notable)
Burketown Post Office	Australia	Record high maximum temperature	34.5 C (94.1 F)	34 of 100 (Routine)
Porterville	United States	Record high minimum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Rocklin	United States	Record high minimum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Spicer	United States	Record daily snowfall	7.6 cm (3.0 in)	33 of 100 (Routine)
Cosamaloapan de Carpio (Smn)	Mexico	Record daily precipitation	41.9 mm (1.6 in)	32 of 100 (Routine)
Douglas	United States	Record daily precipitation	38.6 mm (1.5 in)	32 of 100 (Routine)
Ness City	United States	Record low minimum temperature	7.8 C (46.0 F)	32 of 100 (Routine)
Yellowstone Park Mammoth	United States	Record low minimum temperature	-1.7 C (28.9 F)	32 of 100 (Routine)
Mestad I Oddernes	Norway	Record daily precipitation	48.1 mm (1.9 in)	31 of 100 (Routine)
Snowflake	United States	Record high minimum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Canyon Dam	United States	Record high minimum temperature	11.1 C (52.0 F)	30 of 100 (Routine)
Waycross 4 NE	United States	Record daily precipitation	83.8 mm (3.3 in)	30 of 100 (Routine)
Burdekin Shire Council	Australia	Record high minimum temperature	21.4 C (70.5 F)	29 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Ingenio Tamazula	Mexico	Record daily precipitation	37.1 mm (1.5 in)	28 of 100 (Routine)
Galva	United States	Record low maximum temperature	12.2 C (54.0 F)	28 of 100 (Routine)
Te Kowai Exp STN	Australia	Record high minimum temperature	20.0 C (68.0 F)	27 of 100 (Routine)
Auburn	United States	Record high minimum temperature	21.7 C (71.1 F)	27 of 100 (Routine)
Marysville	United States	Record high maximum temperature	40.0 C (104.0 F)	27 of 100 (Routine)
Tiger Creek Ph	United States	Record high minimum temperature	16.1 C (61.0 F)	27 of 100 (Routine)
Stratford	United States	Record low minimum temperature	5.6 C (42.1 F)	27 of 100 (Routine)
Mt Clemens Ang Base	United States	Record low maximum temperature	10.6 C (51.1 F)	27 of 100 (Routine)
East Park Rsvr	United States	Record high minimum temperature	20.0 C (68.0 F)	26 of 100 (Routine)
Plant City	United States	Record high minimum temperature	23.3 C (73.9 F)	26 of 100 (Routine)
Danville	United States	Record low maximum temperature	16.1 C (61.0 F)	26 of 100 (Routine)
Greeley	United States	Record low minimum temperature	3.9 C (39.0 F)	26 of 100 (Routine)
Astor Exp STN	United States	Record high maximum temperature	27.8 C (82.0 F)	26 of 100 (Routine)
Georgetown	United States	Record low minimum temperature	14.4 C (57.9 F)	26 of 100 (Routine)
Uruburetama	Brazil	Record daily precipitation	35.6 mm (1.4 in)	25 of 100 (Routine)
Ovre Sirdal	Norway	Record daily precipitation	28.4 mm (1.1 in)	25 of 100 (Routine)
Crockett	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
De Sabla	United States	Record high minimum temperature	18.3 C (64.9 F)	25 of 100 (Routine)
McCloud	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
St Petersburg	United States	Record high minimum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Anderson 1 N	United States	Record low maximum temperature	14.4 C (57.9 F)	25 of 100 (Routine)
McKenzie Rvr Rs	United States	Record high maximum temperature	34.4 C (93.9 F)	25 of 100 (Routine)
Solon Springs	United States	Record low minimum temperature	-2.8 C (27.0 F)	25 of 100 (Routine)
Potter Valley Powerhouse	United States	Record high minimum temperature	15.6 C (60.1 F)	24 of 100 (Routine)
Winamac 2SSE	United States	Record low maximum temperature	13.9 C (57.0 F)	24 of 100 (Routine)
Jackson	United States	Record low minimum temperature	-6.1 C (21.0 F)	24 of 100 (Routine)
Port Lincoln	Australia	Record high maximum temperature	26.4 C (79.5 F)	23 of 100 (Routine)
Robe Comparison	Australia	Record high maximum temperature	19.5 C (67.1 F)	23 of 100 (Routine)
Cape St. Francis	South Africa	Record daily precipitation	46.0 mm (1.8 in)	23 of 100 (Routine)
Ft Jones Rs	United States	Record high minimum temperature	14.4 C (57.9 F)	23 of 100 (Routine)
Inverness 3 SE	United States	Record high minimum temperature	23.3 C (73.9 F)	23 of 100 (Routine)

Counts by Type and Timescale

391 records

Records set or tied on 30 May 1973 by type: Highest daily maximum 65, Lowest daily maximum 46, Highest daily minimum 96, Lowest daily minimum 80, Heaviest daily rainfall 96, Heaviest daily snowfall 8.

Records on 30 May 1973 by type
Record type	Records
Highest daily maximum	65
Lowest daily maximum	46
Highest daily minimum	96
Lowest daily minimum	80
Heaviest daily rainfall	96
Heaviest daily snowfall	8
Deepest snow cover	0

Records on 30 May 1973 by timescale: all-time 1, monthly 19, daily 371.

How Much Records Were Beaten By

285 broken records

Margins by which the 285 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

30 May 1973

Top 20 records on 30 May 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1973	Acude Varzea da Volta, BR	daily rain	72.1 mm (2.8 in)	53.8 mm (2.1 in)	50 years	58 of 100 (Notable)
30 May 1973	Lake City 2 E, US	daily rain	87.1 mm (3.4 in)	51.0 mm (2.0 in)	44 years	56 of 100 (Notable)
30 May 1973	Grand Lake 1 NW, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	60 years	47 of 100 (Notable)
30 May 1973	Svijagino, RU	daily rain	42.0 mm (1.7 in)	27.4 mm (1.1 in)	4 years	44 of 100 (Notable)
30 May 1973	Placerville, US	monthly high min	18.3 C (64.9 F)	2.7 C (4.9 F)	58 years	42 of 100 (Notable)
30 May 1973	Georgetown, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	64 years	42 of 100 (Notable)
30 May 1973	Valujki, RU	daily rain	38.7 mm (1.5 in)	20.7 mm (0.8 in)	12 years	41 of 100 (Notable)
30 May 1973	Martinsdale 3 NNW, US	daily low min	-3.9 C (25.0 F)	3.9 C (7.0 F)	77 years	41 of 100 (Notable)
30 May 1973	Sumy, UA	daily rain	26.9 mm (1.1 in)	20.5 mm (0.8 in)	12 years	40 of 100 (Notable)
30 May 1973	Walnut Creek 2 ESE, US	daily high min	15.0 C (59.0 F)	2.2 C (4.0 F)	76 years	38 of 100 (Notable)
30 May 1973	Paulding, US	daily rain	37.6 mm (1.5 in)	19.8 mm (0.8 in)	46 years	38 of 100 (Notable)
30 May 1973	Orlando Executive AP, US	daily rain	57.4 mm (2.3 in)	6.6 mm (0.26 in)	80 years	36 of 100 (Notable)
30 May 1973	Gigant, RU	daily rain	33.4 mm (1.3 in)	22.8 mm (0.9 in)	12 years	35 of 100 (Notable)
30 May 1973	Warner Springs, US	monthly high max	38.9 C (102.0 F)	1.1 C (2.0 F)	62 years	35 of 100 (Notable)
30 May 1973	Boulder, US	daily low min	1.1 C (34.0 F)	1.7 C (3.1 F)	77 years	35 of 100 (Notable)
30 May 1973	Burketown Post Office, AU	daily high max	34.5 C (94.1 F)	1.6 C (2.9 F)	68 years	34 of 100 (Routine)
30 May 1973	Porterville, US	daily high min	22.2 C (72.0 F)	2.8 C (5.0 F)	63 years	33 of 100 (Routine)
30 May 1973	Rocklin, US	daily high min	21.1 C (70.0 F)	2.8 C (5.0 F)	63 years	33 of 100 (Routine)
30 May 1973	Spicer, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	63 years	33 of 100 (Routine)
30 May 1973	Cosamaloapan de Carpio (Smn), MX	daily rain	41.9 mm (1.6 in)	33.5 mm (1.3 in)	7 years	32 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

1818 to 1973

Records set or tied on this calendar date in each year from 1818 to 1973. 1973 had 391 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1973-05-30: 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 20	270
20 to 40	9
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	1
120 to 140	0
140 to 160	1