Weather Records on 18 May 1975

383 weather records were set or tied worldwide on 18 May 1975. Highest significance: Cradle Valley (Waldheim), AU.

Key Facts for 18 May 1975

On 18 May 1975, 383 weather records were set or tied at long-record stations worldwide.
138 were record highs and 69 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 8 monthly and 373 daily.
Cradle Valley (Waldheim) set an all-time record daily precipitation of 145.0 mm (5.7 in) on 18 May 1975.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 443 records.

Record Map

383 stations

383 station records on 18 May 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cradle Valley (Waldheim)	Australia	Record daily precipitation	145.0 mm (5.7 in)	71 of 100 (Major)
Bushy Park (Bushy Park Estates	Australia	Record daily precipitation	30.4 mm (1.2 in)	58 of 100 (Notable)
Toledo Lorenzana	Spain	Record daily precipitation	35.0 mm (1.4 in)	56 of 100 (Notable)
Cape Bruny Lighthouse	Australia	Record daily precipitation	35.2 mm (1.4 in)	54 of 100 (Notable)
Marion	United States	Record daily precipitation	78.2 mm (3.1 in)	52 of 100 (Notable)
Brevard	United States	Record daily precipitation	94.2 mm (3.7 in)	48 of 100 (Notable)
Uxbridge	Australia	Record daily precipitation	48.4 mm (1.9 in)	47 of 100 (Notable)
Lake St Clair (Hec)	Australia	Record daily precipitation	73.4 mm (2.9 in)	46 of 100 (Notable)
Rosebery	Australia	Record daily precipitation	92.1 mm (3.6 in)	46 of 100 (Notable)
Pisgah Forest 3 NE	United States	Record daily precipitation	93.7 mm (3.7 in)	46 of 100 (Notable)
Hidrolandia (Batoque)	Brazil	Record daily precipitation	56.0 mm (2.2 in)	45 of 100 (Notable)
Butlers Gorge	Australia	Record daily precipitation	78.0 mm (3.1 in)	44 of 100 (Notable)
West Lyell	Australia	Record daily precipitation	86.2 mm (3.4 in)	44 of 100 (Notable)
Patterson	United States	Record daily precipitation	42.2 mm (1.7 in)	44 of 100 (Notable)
Tarraleah Village	Australia	Record daily precipitation	42.2 mm (1.7 in)	42 of 100 (Notable)
Sharpes Siding	Australia	Record daily precipitation	63.0 mm (2.5 in)	40 of 100 (Notable)
Brejo Do Cruz	Brazil	Record daily precipitation	92.0 mm (3.6 in)	40 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high minimum temperature	5.0 C (41.0 F)	40 of 100 (Notable)
Belhaven 1 SE	United States	Record daily precipitation	71.6 mm (2.8 in)	40 of 100 (Notable)
Willard 4 SW	United States	Record daily precipitation	66.8 mm (2.6 in)	39 of 100 (Notable)
Bronte Heights	Australia	Record daily precipitation	31.0 mm (1.2 in)	38 of 100 (Notable)
Camp Hill 2NW	United States	Record daily precipitation	46.0 mm (1.8 in)	38 of 100 (Notable)
Biskra	Algeria	Record high minimum temperature	26.0 C (78.8 F)	37 of 100 (Notable)
Chicoutimi	Canada	Record high maximum temperature	28.9 C (84.0 F)	36 of 100 (Notable)
Allende (Smn)	Mexico	Record low minimum temperature	10.0 C (50.0 F)	36 of 100 (Notable)
Clinton 2 S	United States	Record daily precipitation	39.4 mm (1.6 in)	35 of 100 (Notable)
Rosman	United States	Record daily precipitation	81.0 mm (3.2 in)	35 of 100 (Notable)
Charlotte Douglas AP	United States	Record daily precipitation	43.7 mm (1.7 in)	35 of 100 (Notable)
Pennington Gap	United States	Record daily precipitation	41.7 mm (1.6 in)	34 of 100 (Routine)
Summit WSO AP	United States	Record daily snowfall	9.4 cm (3.7 in)	34 of 100 (Routine)
Patos	Brazil	Record daily precipitation	58.4 mm (2.3 in)	33 of 100 (Routine)
Lenoir	United States	Record daily precipitation	38.4 mm (1.5 in)	33 of 100 (Routine)
Staunton Wtp	United States	Record low maximum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Renison Bell	Australia	Record daily precipitation	72.0 mm (2.8 in)	32 of 100 (Routine)
Joao Amaro	Brazil	Record daily precipitation	27.0 mm (1.1 in)	32 of 100 (Routine)
Korsakov	Russia	Record daily precipitation	27.2 mm (1.1 in)	32 of 100 (Routine)
Ft Yates 4 SW	United States	Record daily precipitation	25.7 mm (1.0 in)	32 of 100 (Routine)
Robe Comparison	Australia	Record high minimum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Minsk	Belarus	Record high maximum temperature	29.8 C (85.6 F)	31 of 100 (Routine)
Tartu	Estonia	Record high minimum temperature	15.9 C (60.6 F)	31 of 100 (Routine)
St. Petersburg	Russia	Record high minimum temperature	17.1 C (62.8 F)	31 of 100 (Routine)
Resaca	United States	Record daily precipitation	27.9 mm (1.1 in)	31 of 100 (Routine)
Concord	United States	Record daily precipitation	44.7 mm (1.8 in)	31 of 100 (Routine)
Parelhas (Dnocs)	Brazil	Record daily precipitation	32.0 mm (1.3 in)	30 of 100 (Routine)
Velikie Luki	Russia	Record high maximum temperature	29.7 C (85.5 F)	30 of 100 (Routine)
Olds	Canada	Record daily snowfall	9.4 cm (3.7 in)	29 of 100 (Routine)
Tartu-Toravere	Estonia	Record high minimum temperature	15.7 C (60.3 F)	29 of 100 (Routine)
Ojo de Agua	Mexico	Record low minimum temperature	5.0 C (41.0 F)	29 of 100 (Routine)
Louisville 1 E	United States	Record daily precipitation	43.2 mm (1.7 in)	29 of 100 (Routine)
Albemarle	United States	Record daily precipitation	29.2 mm (1.1 in)	29 of 100 (Routine)
Alta 1 NNW	United States	Record snow depth	25.4 cm (10.0 in)	29 of 100 (Routine)
Oujda	Morocco	Record low maximum temperature	16.0 C (60.8 F)	28 of 100 (Routine)
Reboly	Russia	Record high minimum temperature	13.0 C (55.4 F)	28 of 100 (Routine)
Maatsuyker Island Lighthouse	Australia	Record daily precipitation	33.6 mm (1.3 in)	27 of 100 (Routine)
Moura Brasil	Brazil	Record daily precipitation	27.0 mm (1.1 in)	27 of 100 (Routine)
Anta	Brazil	Record daily precipitation	26.0 mm (1.0 in)	26 of 100 (Routine)
Huejotzingo	Mexico	Record daily precipitation	42.9 mm (1.7 in)	26 of 100 (Routine)
Kargopol	Russia	Record high minimum temperature	14.0 C (57.2 F)	26 of 100 (Routine)
Dimmitt 6 E	United States	Record daily precipitation	29.2 mm (1.1 in)	26 of 100 (Routine)
University Exp STN	United States	Record low minimum temperature	-3.9 C (25.0 F)	26 of 100 (Routine)

Counts by Type and Timescale

383 records

Records set or tied on 18 May 1975 by type: Highest daily maximum 56, Lowest daily maximum 42, Highest daily minimum 82, Lowest daily minimum 27, Heaviest daily rainfall 166, Heaviest daily snowfall 8, Deepest snow cover 2.

Records on 18 May 1975 by type
Record type	Records
Highest daily maximum	56
Lowest daily maximum	42
Highest daily minimum	82
Lowest daily minimum	27
Heaviest daily rainfall	166
Heaviest daily snowfall	8
Deepest snow cover	2

Records on 18 May 1975 by timescale: all-time 2, monthly 8, daily 373.

How Much Records Were Beaten By

309 broken records

Margins by which the 309 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

18 May 1975

Top 20 records on 18 May 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1975	Cradle Valley (Waldheim), AU	all-time rain	145.0 mm (5.7 in)	45.2 mm (1.8 in)	46 years	71 of 100 (Major)
18 May 1975	Bushy Park (Bushy Park Estates, AU	daily rain	30.4 mm (1.2 in)	21.0 mm (0.8 in)	34 years	58 of 100 (Notable)
18 May 1975	Toledo Lorenzana, ES	daily rain	35.0 mm (1.4 in)	23.6 mm (0.9 in)	38 years	56 of 100 (Notable)
18 May 1975	Cape Bruny Lighthouse, AU	daily rain	35.2 mm (1.4 in)	13.6 mm (0.5 in)	65 years	54 of 100 (Notable)
18 May 1975	Marion, US	daily rain	78.2 mm (3.1 in)	47.7 mm (1.9 in)	52 years	52 of 100 (Notable)
18 May 1975	Brevard, US	daily rain	94.2 mm (3.7 in)	83.5 mm (3.3 in)	5 years	48 of 100 (Notable)
18 May 1975	Uxbridge, AU	monthly rain	48.4 mm (1.9 in)	9.0 mm (0.35 in)	56 years	47 of 100 (Notable)
18 May 1975	Lake St Clair (Hec), AU	monthly rain	73.4 mm (2.9 in)	20.1 mm (0.8 in)	26 years	46 of 100 (Notable)
18 May 1975	Rosebery, AU	monthly rain	92.1 mm (3.6 in)	20.0 mm (0.8 in)	38 years	46 of 100 (Notable)
18 May 1975	Pisgah Forest 3 NE, US	daily rain	93.7 mm (3.7 in)	85.3 mm (3.4 in)	12 years	46 of 100 (Notable)
18 May 1975	Hidrolandia (Batoque), BR	daily rain	56.0 mm (2.2 in)	36.0 mm (1.4 in)	40 years	45 of 100 (Notable)
18 May 1975	Butlers Gorge, AU	monthly rain	78.0 mm (3.1 in)	23.9 mm (0.9 in)	17 years	44 of 100 (Notable)
18 May 1975	West Lyell, AU	daily rain	86.2 mm (3.4 in)	44.0 mm (1.7 in)	20 years	44 of 100 (Notable)
18 May 1975	Patterson, US	daily rain	42.2 mm (1.7 in)	22.9 mm (0.9 in)	70 years	44 of 100 (Notable)
18 May 1975	Tarraleah Village, AU	daily rain	42.2 mm (1.7 in)	25.7 mm (1.0 in)	16 years	42 of 100 (Notable)
18 May 1975	Sharpes Siding, AU	monthly rain	63.0 mm (2.5 in)	10.7 mm (0.4 in)	26 years	40 of 100 (Notable)
18 May 1975	Brejo Do Cruz, BR	daily rain	92.0 mm (3.6 in)	28.3 mm (1.1 in)	57 years	40 of 100 (Notable)
18 May 1975	Col du Grand St-Bernard, CH	daily high min	5.0 C (41.0 F)	0.5 C (0.9 F)	96 years	40 of 100 (Notable)
18 May 1975	Belhaven 1 SE, US	daily rain	71.6 mm (2.8 in)	47.5 mm (1.9 in)	26 years	40 of 100 (Notable)
18 May 1975	Willard 4 SW, US	daily rain	66.8 mm (2.6 in)	39.6 mm (1.6 in)	26 years	39 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

1796 to 1975

Records set or tied on this calendar date in each year from 1796 to 1975. 1975 had 383 records.

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

Records on 05-18 in each year
Year	Records
1796	1
1798	1
1802	2
1832	1
1833	1
1845	1
1847	1
1848	1
1855	1
1859	1
1861	2
1863	3
1864	1
1866	2
1868	2
1869	1
1870	1
1871	2
1872	1
1874	2
1877	4
1878	1
1879	1
1881	1
1883	2
1884	2
1885	1
1887	1
1888	4
1889	2
1891	1
1893	2
1894	4
1895	5
1896	2
1897	2
1898	1
1899	1
1900	13
1901	6
1902	9
1903	7
1904	11
1905	2
1906	24
1907	18
1908	5
1909	12
1910	50
1911	64
1912	5
1913	11
1914	45
1915	55
1916	74
1917	30
1918	42
1919	30
1920	26
1921	41
1922	33
1923	61
1924	92
1925	220
1926	133
1927	180
1928	160
1929	193
1930	475
1931	191
1932	460
1933	380
1934	390
1935	400
1936	282
1937	348
1938	382
1939	169
1940	315
1941	334
1942	421
1943	744
1944	496
1945	706
1946	651
1947	231
1948	426
1949	597
1950	473
1951	279
1952	493
1953	393
1954	498
1955	848
1956	795
1957	595
1958	334
1959	435
1960	404
1961	187
1962	1,199
1963	477
1964	329
1965	345
1966	438
1967	410
1968	817
1969	865
1970	703
1971	666
1972	499
1973	1,233
1974	1,097
1975	383
1976	733
1977	1,126
1978	1,090
1979	399
1980	614
1981	1,218
1982	452
1983	1,093
1984	717
1985	498
1986	1,131
1987	823
1988	1,154
1989	721
1990	753
1991	1,218
1992	921
1993	707
1994	1,015
1995	1,849
1996	1,767
1997	1,115
1998	1,060
1999	584
2000	922
2001	898
2002	1,833
2003	1,270
2004	847
2005	630
2006	1,493
2007	1,133
2008	999
2009	1,368
2010	894
2011	1,406
2012	523
2013	816
2014	609
2015	785
2016	597
2017	1,855
2018	557
2019	810
2020	706
2021	418
2022	711
2023	554
2024	551
2025	619
2026	1,131

Download the Data

Data for records on 1975-05-18: 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 50	302
50 to 100	5
100 to 150	0
150 to 200	1
200 to 250	1