Weather Records on 30 August 1975

664 weather records were set or tied worldwide on 30 August 1975. Highest significance: Idracowra, AU.

Key Facts for 30 August 1975

On 30 August 1975, 664 weather records were set or tied at long-record stations worldwide.
75 were record highs and 146 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 29 monthly and 635 daily.
Idracowra set a daily record precipitation of 32.0 mm (1.3 in) on 30 August 1975.
Across 169 earlier years (1806 to 2026) the same calendar date averaged 422 records.

Record Map

664 stations

664 station records on 30 August 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 August 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Idracowra	Australia	Record daily precipitation	32.0 mm (1.3 in)	72 of 100 (Major)
Wellsburg Wtr Trmt Pl	United States	Record daily precipitation	76.7 mm (3.0 in)	66 of 100 (Major)
Willowvale (Tnk)	South Africa	Record daily precipitation	59.5 mm (2.3 in)	62 of 100 (Major)
Haverhill	United States	Record daily precipitation	55.9 mm (2.2 in)	62 of 100 (Major)
Ann Arbor U of Mich	United States	Record daily precipitation	94.7 mm (3.7 in)	61 of 100 (Major)
Rothenburg Ob der Tauber	Germany	Record daily precipitation	39.3 mm (1.5 in)	60 of 100 (Major)
Yuleba Garden St	Australia	Record daily precipitation	43.0 mm (1.7 in)	57 of 100 (Notable)
Lockwood	United States	Record daily precipitation	90.2 mm (3.6 in)	56 of 100 (Notable)
Cavendish	United States	Record daily precipitation	52.6 mm (2.1 in)	54 of 100 (Notable)
Tionesta 2 SE Lake	United States	Record daily precipitation	78.0 mm (3.1 in)	53 of 100 (Notable)
Abminga Railway Siding	Australia	Record daily precipitation	30.0 mm (1.2 in)	52 of 100 (Notable)
Bolivar	United States	Record daily precipitation	38.6 mm (1.5 in)	52 of 100 (Notable)
Delta	United States	Record daily precipitation	78.7 mm (3.1 in)	52 of 100 (Notable)
Lawrence	United States	Record daily precipitation	49.3 mm (1.9 in)	51 of 100 (Notable)
Broadalbin	United States	Record daily precipitation	62.5 mm (2.5 in)	51 of 100 (Notable)
Norfolk 2 SW	United States	Record daily precipitation	45.0 mm (1.8 in)	49 of 100 (Notable)
Albion	United States	Record daily precipitation	50.3 mm (2.0 in)	49 of 100 (Notable)
Fulton	United States	Record daily precipitation	53.8 mm (2.1 in)	49 of 100 (Notable)
Chestnut Hill	United States	Record daily precipitation	58.4 mm (2.3 in)	48 of 100 (Notable)
Marshfield 4 WSW	United States	Record daily precipitation	73.7 mm (2.9 in)	48 of 100 (Notable)
Towanda 1 S	United States	Record daily precipitation	48.0 mm (1.9 in)	48 of 100 (Notable)
Vernon	United States	Record daily precipitation	69.9 mm (2.8 in)	48 of 100 (Notable)
Luiz Correia	Brazil	Record daily precipitation	30.2 mm (1.2 in)	47 of 100 (Notable)
Northville	United States	Record daily precipitation	62.5 mm (2.5 in)	47 of 100 (Notable)
Harrisburg	United States	Record daily precipitation	66.3 mm (2.6 in)	46 of 100 (Notable)
Gardiner	United States	Record daily precipitation	41.1 mm (1.6 in)	45 of 100 (Notable)
Heath	United States	Record daily precipitation	77.0 mm (3.0 in)	45 of 100 (Notable)
Middleton	United States	Record daily precipitation	65.0 mm (2.6 in)	45 of 100 (Notable)
New London Lock #22	United States	Record daily precipitation	70.6 mm (2.8 in)	45 of 100 (Notable)
Drake	United States	Record daily precipitation	57.2 mm (2.3 in)	45 of 100 (Notable)
Alfred	United States	Record daily precipitation	56.4 mm (2.2 in)	44 of 100 (Notable)
Readsboro 1 SE	United States	Record daily precipitation	88.4 mm (3.5 in)	44 of 100 (Notable)
Whitingham 1 W	United States	Record daily precipitation	85.1 mm (3.4 in)	44 of 100 (Notable)
Tevriz	Russia	Record daily precipitation	34.7 mm (1.4 in)	43 of 100 (Notable)
Shawneetown Old Town	United States	Record daily precipitation	77.7 mm (3.1 in)	43 of 100 (Notable)
Kalamazoo State Hospital	United States	Record daily precipitation	101.6 mm (4.0 in)	43 of 100 (Notable)
Canajoharie	United States	Record daily precipitation	62.0 mm (2.4 in)	43 of 100 (Notable)
Canastota	United States	Record daily precipitation	62.7 mm (2.5 in)	43 of 100 (Notable)
Trenton Falls	United States	Record daily precipitation	72.4 mm (2.9 in)	43 of 100 (Notable)
1 ENE Fairfield	United States	Record daily precipitation	39.9 mm (1.6 in)	42 of 100 (Notable)
Owensboro 3ENE	United States	Record daily precipitation	40.4 mm (1.6 in)	42 of 100 (Notable)
Susquehanna	United States	Record daily precipitation	49.5 mm (1.9 in)	42 of 100 (Notable)
Gloversville	United States	Record daily precipitation	80.0 mm (3.1 in)	41 of 100 (Notable)
Hemlock	United States	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
St Charles Elm Pt	United States	Record daily precipitation	35.1 mm (1.4 in)	40 of 100 (Notable)
Hanover	United States	Record daily precipitation	33.3 mm (1.3 in)	40 of 100 (Notable)
Keene	United States	Record daily precipitation	52.6 mm (2.1 in)	40 of 100 (Notable)
Canton 1 NW	United States	Record daily precipitation	48.0 mm (1.9 in)	40 of 100 (Notable)
Buffalo 2N	United States	Record daily precipitation	52.3 mm (2.1 in)	39 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	66.8 mm (2.6 in)	39 of 100 (Notable)
Greenville Wtp	United States	Record daily precipitation	40.4 mm (1.6 in)	39 of 100 (Notable)
Corry	United States	Record daily precipitation	36.1 mm (1.4 in)	39 of 100 (Notable)
Morgantown Muni AP	United States	Record high minimum temperature	21.7 C (71.1 F)	39 of 100 (Notable)
Fladungen-Heufurt	Germany	Record daily precipitation	26.0 mm (1.0 in)	38 of 100 (Notable)
Antonio Escobedo (Smn)	Mexico	Record daily precipitation	46.0 mm (1.8 in)	38 of 100 (Notable)
Washington 1 W	United States	Record daily precipitation	54.9 mm (2.2 in)	38 of 100 (Notable)
W Lafayette 6 NW	United States	Record daily precipitation	51.6 mm (2.0 in)	38 of 100 (Notable)
Willis 5 SSW	United States	Record daily precipitation	43.7 mm (1.7 in)	38 of 100 (Notable)
Lock Haven	United States	Record daily precipitation	47.5 mm (1.9 in)	38 of 100 (Notable)
Montrose	United States	Record daily precipitation	47.8 mm (1.9 in)	38 of 100 (Notable)

Counts by Type and Timescale

664 records

Records set or tied on 30 August 1975 by type: Highest daily maximum 42, Lowest daily maximum 62, Highest daily minimum 33, Lowest daily minimum 84, Heaviest daily rainfall 443.

Records on 30 August 1975 by type
Record type	Records
Highest daily maximum	42
Lowest daily maximum	62
Highest daily minimum	33
Lowest daily minimum	84
Heaviest daily rainfall	443
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 August 1975 by timescale: all-time 0, monthly 29, daily 635.

How Much Records Were Beaten By

573 broken records

Margins by which the 573 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 77.8. Ties are not counted.

Top 20 by Significance

30 August 1975

Top 20 records on 30 August 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 1975	Idracowra, AU	daily rain	32.0 mm (1.3 in)	32.0 mm (1.3 in)	85 years	72 of 100 (Major)
30 August 1975	Wellsburg Wtr Trmt Pl, US	daily rain	76.7 mm (3.0 in)	50.0 mm (2.0 in)	57 years	66 of 100 (Major)
30 August 1975	Willowvale (Tnk), ZA	daily rain	59.5 mm (2.3 in)	46.8 mm (1.8 in)	74 years	62 of 100 (Major)
30 August 1975	Haverhill, US	daily rain	55.9 mm (2.2 in)	37.9 mm (1.5 in)	61 years	62 of 100 (Major)
30 August 1975	Ann Arbor U of Mich, US	monthly rain	94.7 mm (3.7 in)	33.7 mm (1.3 in)	28 years	61 of 100 (Major)
30 August 1975	Rothenburg Ob der Tauber, DE	daily rain	39.3 mm (1.5 in)	26.8 mm (1.1 in)	50 years	60 of 100 (Major)
30 August 1975	Yuleba Garden St, AU	daily rain	43.0 mm (1.7 in)	23.9 mm (0.9 in)	72 years	57 of 100 (Notable)
30 August 1975	Lockwood, US	daily rain	90.2 mm (3.6 in)	77.8 mm (3.1 in)	30 years	56 of 100 (Notable)
30 August 1975	Cavendish, US	daily rain	52.6 mm (2.1 in)	37.1 mm (1.5 in)	46 years	54 of 100 (Notable)
30 August 1975	Tionesta 2 SE Lake, US	daily rain	78.0 mm (3.1 in)	64.8 mm (2.6 in)	28 years	53 of 100 (Notable)
30 August 1975	Abminga Railway Siding, AU	daily rain	30.0 mm (1.2 in)	30.0 mm (1.2 in)	36 years	52 of 100 (Notable)
30 August 1975	Bolivar, US	daily rain	38.6 mm (1.5 in)	26.9 mm (1.1 in)	69 years	52 of 100 (Notable)
30 August 1975	Delta, US	daily rain	78.7 mm (3.1 in)	50.0 mm (2.0 in)	29 years	52 of 100 (Notable)
30 August 1975	Lawrence, US	daily rain	49.3 mm (1.9 in)	31.0 mm (1.2 in)	61 years	51 of 100 (Notable)
30 August 1975	Broadalbin, US	daily rain	62.5 mm (2.5 in)	50.6 mm (2.0 in)	29 years	51 of 100 (Notable)
30 August 1975	Norfolk 2 SW, US	daily rain	45.0 mm (1.8 in)	27.5 mm (1.1 in)	89 years	49 of 100 (Notable)
30 August 1975	Albion, US	daily rain	50.3 mm (2.0 in)	31.2 mm (1.2 in)	66 years	49 of 100 (Notable)
30 August 1975	Fulton, US	daily rain	53.8 mm (2.1 in)	40.6 mm (1.6 in)	18 years	49 of 100 (Notable)
30 August 1975	Chestnut Hill, US	daily rain	58.4 mm (2.3 in)	35.3 mm (1.4 in)	56 years	48 of 100 (Notable)
30 August 1975	Marshfield 4 WSW, US	daily rain	73.7 mm (2.9 in)	69.9 mm (2.8 in)	8 years	48 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

1806 to 1975

Records set or tied on this calendar date in each year from 1806 to 1975. 1975 had 664 records.

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

Records on 08-30 in each year
Year	Records
1806	1
1807	4
1813	1
1814	2
1827	1
1829	1
1835	1
1838	1
1839	1
1845	4
1850	1
1851	2
1855	1
1857	1
1859	1
1864	2
1867	1
1869	1
1870	2
1874	1
1875	2
1876	1
1877	2
1878	1
1880	4
1881	2
1882	1
1884	1
1885	5
1886	7
1887	1
1888	1
1889	2
1890	5
1891	1
1892	3
1893	3
1894	2
1895	1
1896	1
1897	3
1898	3
1899	2
1900	6
1901	8
1902	12
1903	19
1904	13
1905	23
1906	29
1907	8
1908	10
1909	37
1910	15
1911	41
1912	60
1913	22
1914	23
1915	47
1916	17
1917	50
1918	45
1919	17
1920	78
1921	100
1922	65
1923	61
1924	283
1925	167
1926	173
1927	109
1928	327
1929	208
1930	245
1931	192
1932	1,102
1933	274
1934	519
1935	476
1936	191
1937	418
1938	233
1939	401
1940	346
1941	422
1942	385
1943	487
1944	491
1945	455
1946	545
1947	599
1948	519
1949	240
1950	481
1951	1,091
1952	316
1953	1,124
1954	516
1955	417
1956	479
1957	321
1958	363
1959	546
1960	356
1961	573
1962	387
1963	442
1964	422
1965	1,118
1966	500
1967	536
1968	729
1969	522
1970	423
1971	443
1972	579
1973	646
1974	838
1975	664
1976	679
1977	665
1978	825
1979	517
1980	572
1981	684
1982	770
1983	696
1984	1,127
1985	629
1986	1,768
1987	638
1988	881
1989	791
1990	983
1991	938
1992	1,697
1993	1,200
1994	601
1995	940
1996	1,385
1997	960
1998	1,278
1999	864
2000	1,189
2001	750
2002	801
2003	1,226
2004	1,087
2005	1,500
2006	989
2007	1,300
2008	678
2009	1,251
2010	1,552
2011	994
2012	1,087
2013	644
2014	558
2015	1,074
2016	552
2017	924
2018	616
2019	755
2020	671
2021	429
2022	1,077
2023	651
2024	912
2025	324
2026	733

Download the Data

Data for records on 1975-08-30: 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	343
10 to 20	117
20 to 30	56
30 to 40	32
40 to 50	13
50 to 60	9
60 to 70	2
70 to 80	1