Weather Records on 30 May 1979

1,185 weather records were set or tied worldwide on 30 May 1979. Highest significance: St Andrews, CA.

Key Facts for 30 May 1979

On 30 May 1979, 1,185 weather records were set or tied at long-record stations worldwide.
476 were record highs and 225 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 103 monthly and 1,081 daily.
St Andrews set an all-time record daily precipitation of 146.5 mm (5.8 in) on 30 May 1979.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 434 records.

Record Map

1,185 stations

1,185 station records on 30 May 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
St Andrews	Canada	Record daily precipitation	146.5 mm (5.8 in)	64 of 100 (Major)
Abre Campo	Brazil	Record daily precipitation	65.4 mm (2.6 in)	61 of 100 (Major)
Ponte Nova Do Paraopeba	Brazil	Record daily precipitation	71.0 mm (2.8 in)	60 of 100 (Major)
Lagoa Grande (Mmv)	Brazil	Record daily precipitation	68.4 mm (2.7 in)	58 of 100 (Notable)
Bom Jesus Do Galho	Brazil	Record daily precipitation	74.6 mm (2.9 in)	54 of 100 (Notable)
Vermelho Velho	Brazil	Record daily precipitation	74.2 mm (2.9 in)	54 of 100 (Notable)
Lowestoft	United Kingdom	Record daily precipitation	27.5 mm (1.1 in)	53 of 100 (Notable)
Woodstock	Canada	Record daily precipitation	36.2 mm (1.4 in)	52 of 100 (Notable)
Caixa de Areia	Brazil	Record daily precipitation	63.0 mm (2.5 in)	50 of 100 (Notable)
Pedro Leopoldo	Brazil	Record daily precipitation	70.2 mm (2.8 in)	50 of 100 (Notable)
Sete Lagoas	Brazil	Record daily precipitation	73.2 mm (2.9 in)	50 of 100 (Notable)
Ada	United States	Record daily precipitation	59.2 mm (2.3 in)	50 of 100 (Notable)
Ste Rose du Degelis	Canada	Record daily precipitation	34.5 mm (1.4 in)	48 of 100 (Notable)
Sheffield	United Kingdom	Record daily precipitation	35.8 mm (1.4 in)	46 of 100 (Notable)
Machias	United States	Record daily precipitation	67.3 mm (2.6 in)	46 of 100 (Notable)
Jose de Melo	Brazil	Record daily precipitation	73.1 mm (2.9 in)	45 of 100 (Notable)
Setlagodi (Pol)	South Africa	Record daily precipitation	26.0 mm (1.0 in)	45 of 100 (Notable)
Conceicao Do Mato D	Brazil	Record daily precipitation	63.1 mm (2.5 in)	44 of 100 (Notable)
Rio Do Peixe (Mmv)	Brazil	Record daily precipitation	83.0 mm (3.3 in)	44 of 100 (Notable)
Riversul	Brazil	Record daily precipitation	38.7 mm (1.5 in)	44 of 100 (Notable)
Itabera	Brazil	Record daily precipitation	53.0 mm (2.1 in)	44 of 100 (Notable)
Mount Uniacke	Canada	Record daily precipitation	56.6 mm (2.2 in)	44 of 100 (Notable)
Varzea da Palma	Brazil	Record daily precipitation	57.0 mm (2.2 in)	43 of 100 (Notable)
Vespasiano	Brazil	Record daily precipitation	63.4 mm (2.5 in)	43 of 100 (Notable)
Usina Peti	Brazil	Record daily precipitation	53.4 mm (2.1 in)	43 of 100 (Notable)
Porto Firme	Brazil	Record daily precipitation	40.0 mm (1.6 in)	43 of 100 (Notable)
La Malbaie	Canada	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
Gouvea	Brazil	Record daily precipitation	64.1 mm (2.5 in)	42 of 100 (Notable)
Caete	Brazil	Record daily precipitation	63.1 mm (2.5 in)	42 of 100 (Notable)
Tg Jiu	Romania	Record daily precipitation	45.0 mm (1.8 in)	42 of 100 (Notable)
Assarai-Montante	Brazil	Record daily precipitation	30.6 mm (1.2 in)	41 of 100 (Notable)
Ferros	Brazil	Record daily precipitation	57.0 mm (2.2 in)	41 of 100 (Notable)
Castelo	Brazil	Record daily precipitation	32.0 mm (1.3 in)	41 of 100 (Notable)
Jacigua (Dnos)	Brazil	Record daily precipitation	51.0 mm (2.0 in)	41 of 100 (Notable)
Mairipora	Brazil	Record daily precipitation	37.9 mm (1.5 in)	41 of 100 (Notable)
Gagetown 2	Canada	Record daily precipitation	39.8 mm (1.6 in)	41 of 100 (Notable)
Elberton 2 N	United States	Record daily precipitation	33.0 mm (1.3 in)	41 of 100 (Notable)
Monte Alegre de Minas	Brazil	Record daily precipitation	61.5 mm (2.4 in)	40 of 100 (Notable)
Hohenpeissenberg	Germany	Record high minimum temperature	16.3 C (61.3 F)	40 of 100 (Notable)
Chemnitz	Germany	Record high minimum temperature	16.6 C (61.9 F)	40 of 100 (Notable)
Helmond	Netherlands	Record daily precipitation	25.7 mm (1.0 in)	40 of 100 (Notable)
Laurel	United States	Record daily precipitation	86.6 mm (3.4 in)	40 of 100 (Notable)
Franco da Rocha (Hosp.Juqueri)	Brazil	Record daily precipitation	31.9 mm (1.3 in)	39 of 100 (Notable)
Kentville Cda	Canada	Record daily precipitation	38.8 mm (1.5 in)	39 of 100 (Notable)
St Margaret's Bay	Canada	Record daily precipitation	57.4 mm (2.3 in)	39 of 100 (Notable)
Hvar	Croatia	Record high maximum temperature	29.0 C (84.2 F)	39 of 100 (Notable)
Malvern	United Kingdom	Record daily precipitation	32.5 mm (1.3 in)	39 of 100 (Notable)
N Loup	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Mineracao Morro Velho	Brazil	Record daily precipitation	57.0 mm (2.2 in)	38 of 100 (Notable)
Acaiaca-Jusante	Brazil	Record daily precipitation	43.0 mm (1.7 in)	38 of 100 (Notable)
Pirapitingui	Brazil	Record daily precipitation	41.4 mm (1.6 in)	38 of 100 (Notable)
Tilzapotla	Mexico	Record daily precipitation	84.8 mm (3.3 in)	38 of 100 (Notable)
Lafayette Rgnl AP	United States	Record daily precipitation	113.3 mm (4.5 in)	38 of 100 (Notable)
Vinhedo	Brazil	Record daily precipitation	40.4 mm (1.6 in)	37 of 100 (Notable)
Usina Batista	Brazil	Record daily precipitation	40.8 mm (1.6 in)	37 of 100 (Notable)
Tadoussac	Canada	Record daily precipitation	45.5 mm (1.8 in)	37 of 100 (Notable)
De Bilt	Netherlands	Record daily precipitation	35.4 mm (1.4 in)	37 of 100 (Notable)
Usina Parauna	Brazil	Record daily precipitation	93.0 mm (3.7 in)	36 of 100 (Notable)
Praia Grande (Parana)	Brazil	Record daily precipitation	25.2 mm (1.0 in)	36 of 100 (Notable)
Schwerin	Germany	Record high minimum temperature	16.6 C (61.9 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,185 records

Records set or tied on 30 May 1979 by type: Highest daily maximum 189, Lowest daily maximum 84, Highest daily minimum 287, Lowest daily minimum 141, Heaviest daily rainfall 480, Heaviest daily snowfall 4.

Records on 30 May 1979 by type
Record type	Records
Highest daily maximum	189
Lowest daily maximum	84
Highest daily minimum	287
Lowest daily minimum	141
Heaviest daily rainfall	480
Heaviest daily snowfall	4
Deepest snow cover	0

Records on 30 May 1979 by timescale: all-time 1, monthly 103, daily 1,081.

How Much Records Were Beaten By

1,033 broken records

Margins by which the 1,033 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 58.2. Ties are not counted.

Top 20 by Significance

30 May 1979

Top 20 records on 30 May 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1979	St Andrews, CA	all-time rain	146.5 mm (5.8 in)	28.1 mm (1.1 in)	27 years	64 of 100 (Major)
30 May 1979	Abre Campo, BR	monthly rain	65.4 mm (2.6 in)	35.2 mm (1.4 in)	28 years	61 of 100 (Major)
30 May 1979	Ponte Nova Do Paraopeba, BR	monthly rain	71.0 mm (2.8 in)	38.6 mm (1.5 in)	25 years	60 of 100 (Major)
30 May 1979	Lagoa Grande (Mmv), BR	monthly rain	68.4 mm (2.7 in)	34.4 mm (1.4 in)	17 years	58 of 100 (Notable)
30 May 1979	Bom Jesus Do Galho, BR	monthly rain	74.6 mm (2.9 in)	45.2 mm (1.8 in)	6 years	54 of 100 (Notable)
30 May 1979	Vermelho Velho, BR	monthly rain	74.2 mm (2.9 in)	41.2 mm (1.6 in)	5 years	54 of 100 (Notable)
30 May 1979	Lowestoft, GB	daily rain	27.5 mm (1.1 in)	11.7 mm (0.5 in)	48 years	53 of 100 (Notable)
30 May 1979	Woodstock, CA	daily rain	36.2 mm (1.4 in)	17.4 mm (0.7 in)	72 years	52 of 100 (Notable)
30 May 1979	Caixa de Areia, BR	daily rain	63.0 mm (2.5 in)	40.6 mm (1.6 in)	24 years	50 of 100 (Notable)
30 May 1979	Pedro Leopoldo, BR	monthly rain	70.2 mm (2.8 in)	28.2 mm (1.1 in)	24 years	50 of 100 (Notable)
30 May 1979	Sete Lagoas, BR	monthly rain	73.2 mm (2.9 in)	28.7 mm (1.1 in)	24 years	50 of 100 (Notable)
30 May 1979	Ada, US	daily rain	59.2 mm (2.3 in)	19.8 mm (0.8 in)	79 years	50 of 100 (Notable)
30 May 1979	Ste Rose du Degelis, CA	daily rain	34.5 mm (1.4 in)	25.9 mm (1.0 in)	22 years	48 of 100 (Notable)
30 May 1979	Sheffield, GB	daily rain	35.8 mm (1.4 in)	14.8 mm (0.6 in)	42 years	46 of 100 (Notable)
30 May 1979	Machias, US	daily rain	67.3 mm (2.6 in)	34.8 mm (1.4 in)	24 years	46 of 100 (Notable)
30 May 1979	Jose de Melo, BR	monthly rain	73.1 mm (2.9 in)	27.1 mm (1.1 in)	13 years	45 of 100 (Notable)
30 May 1979	Setlagodi (Pol), ZA	daily rain	26.0 mm (1.0 in)	17.9 mm (0.7 in)	69 years	45 of 100 (Notable)
30 May 1979	Conceicao Do Mato D, BR	monthly rain	63.1 mm (2.5 in)	19.7 mm (0.8 in)	34 years	44 of 100 (Notable)
30 May 1979	Rio Do Peixe (Mmv), BR	monthly rain	83.0 mm (3.3 in)	27.1 mm (1.1 in)	24 years	44 of 100 (Notable)
30 May 1979	Riversul, BR	daily rain	38.7 mm (1.5 in)	33.7 mm (1.3 in)	40 years	44 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

1818 to 1979

Records set or tied on this calendar date in each year from 1818 to 1979. 1979 had 1,185 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 1979-05-30: 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 10	815
10 to 20	134
20 to 30	49
30 to 40	22
40 to 50	9
50 to 60	4