Weather Records on 18 May 1974

1,097 weather records were set or tied worldwide on 18 May 1974. Highest significance: Omsukchan, RU.

Key Facts for 18 May 1974

On 18 May 1974, 1,097 weather records were set or tied at long-record stations worldwide.
331 were record highs and 338 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 30 monthly and 1,066 daily.
Omsukchan set an all-time record daily precipitation of 50.0 mm (2.0 in) on 18 May 1974.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 438 records.

Record Map

1,097 stations

1,097 station records on 18 May 1974 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1974: highest significance records shown on the map
Station	Country	Type	Value	Significance
Omsukchan	Russia	Record daily precipitation	50.0 mm (2.0 in)	72 of 100 (Major)
Newton	United States	Record daily precipitation	61.2 mm (2.4 in)	68 of 100 (Major)
Gunnedah Pool	Australia	Record daily precipitation	49.1 mm (1.9 in)	64 of 100 (Major)
Cheviot Fells	South Africa	Record daily precipitation	42.5 mm (1.7 in)	63 of 100 (Major)
Mineral	United States	Record daily snowfall	20.3 cm (8.0 in)	62 of 100 (Major)
Oregon	United States	Record daily precipitation	95.3 mm (3.8 in)	62 of 100 (Major)
Queimadas	Brazil	Record daily precipitation	34.2 mm (1.3 in)	60 of 100 (Major)
Fremont 5 NW	United States	Record daily snowfall	15.2 cm (6.0 in)	58 of 100 (Notable)
Amity 4 NE	United States	Record daily precipitation	76.2 mm (3.0 in)	53 of 100 (Notable)
Edgerton	United States	Record daily precipitation	72.4 mm (2.9 in)	53 of 100 (Notable)
Osceola	United States	Record daily precipitation	79.0 mm (3.1 in)	52 of 100 (Notable)
Bondi Bowling Club	Australia	Record daily precipitation	100.2 mm (3.9 in)	51 of 100 (Notable)
Lyons	United States	Record daily precipitation	90.4 mm (3.6 in)	51 of 100 (Notable)
Paisley	United States	Record daily snowfall	11.7 cm (4.6 in)	51 of 100 (Notable)
Bellata Post Office	Australia	Record daily precipitation	44.4 mm (1.7 in)	50 of 100 (Notable)
Hope A	Canada	Record daily precipitation	37.6 mm (1.5 in)	50 of 100 (Notable)
Talwood State School	Australia	Record daily precipitation	67.0 mm (2.6 in)	48 of 100 (Notable)
Grenfell (Quondong Rd)	Australia	Record daily precipitation	36.0 mm (1.4 in)	48 of 100 (Notable)
Oakland 1 SE	United States	Record daily precipitation	55.9 mm (2.2 in)	48 of 100 (Notable)
Forbes (Camp Street)	Australia	Record daily precipitation	32.0 mm (1.3 in)	47 of 100 (Notable)
Treherne	Canada	Record daily precipitation	32.5 mm (1.3 in)	47 of 100 (Notable)
Gurley (Glenroy)	Australia	Record daily precipitation	49.8 mm (2.0 in)	46 of 100 (Notable)
Ruy Barbosa	Brazil	Record daily precipitation	36.0 mm (1.4 in)	45 of 100 (Notable)
Shelbyville Sewage Plt	United States	Record daily precipitation	62.2 mm (2.4 in)	45 of 100 (Notable)
Opheim 12 SSE	United States	Record daily precipitation	35.6 mm (1.4 in)	45 of 100 (Notable)
Carrollton 3 NNE	United States	Record daily precipitation	43.9 mm (1.7 in)	45 of 100 (Notable)
Bridgeport	United States	Record daily snowfall	5.1 cm (2.0 in)	44 of 100 (Notable)
Hillsboro	United States	Record daily precipitation	48.8 mm (1.9 in)	44 of 100 (Notable)
Gosford (Gertrude Place)	Australia	Record daily precipitation	95.0 mm (3.7 in)	43 of 100 (Notable)
Concordia	United States	Record daily precipitation	83.3 mm (3.3 in)	43 of 100 (Notable)
Franklinville	United States	Record daily precipitation	27.2 mm (1.1 in)	43 of 100 (Notable)
Salisbury Post Office	Australia	Record daily precipitation	55.0 mm (2.2 in)	42 of 100 (Notable)
Prospect Reservoir	Australia	Record daily precipitation	26.0 mm (1.0 in)	42 of 100 (Notable)
Confluence 1 NW	United States	Record daily precipitation	37.3 mm (1.5 in)	42 of 100 (Notable)
McKeesport	United States	Record daily precipitation	48.0 mm (1.9 in)	42 of 100 (Notable)
Tejupa	Brazil	Record daily precipitation	56.1 mm (2.2 in)	41 of 100 (Notable)
Ft Bidwell	United States	Record low maximum temperature	6.1 C (43.0 F)	41 of 100 (Notable)
Cockle Creek (Pasminco Metals)	Australia	Record daily precipitation	88.6 mm (3.5 in)	40 of 100 (Notable)
Clarington Lock 14	United States	Record daily precipitation	47.8 mm (1.9 in)	40 of 100 (Notable)
Wee Waa Ag. Res. STN.	Australia	Record daily precipitation	43.4 mm (1.7 in)	39 of 100 (Notable)
Glenfield (Macquarie)	Australia	Record daily precipitation	27.0 mm (1.1 in)	39 of 100 (Notable)
Onawa 3NW	United States	Record daily precipitation	74.2 mm (2.9 in)	39 of 100 (Notable)
Perry	United States	Record daily precipitation	85.3 mm (3.4 in)	39 of 100 (Notable)
Lancaster 2 NW	United States	Record daily precipitation	51.6 mm (2.0 in)	39 of 100 (Notable)
Randwick Bowling Club	Australia	Record daily precipitation	65.6 mm (2.6 in)	38 of 100 (Notable)
Tubbul Post Office	Australia	Record daily precipitation	37.0 mm (1.5 in)	38 of 100 (Notable)
Araci	Brazil	Record daily precipitation	41.0 mm (1.6 in)	38 of 100 (Notable)
Tehachapi	United States	Record low maximum temperature	10.6 C (51.1 F)	38 of 100 (Notable)
Knightstown 2 ENE	United States	Record daily precipitation	55.9 mm (2.2 in)	38 of 100 (Notable)
Napa State Hospital	United States	Record low minimum temperature	-1.1 C (30.0 F)	37 of 100 (Notable)
Kwa-Mbonambi (Bos)	South Africa	Record daily precipitation	111.0 mm (4.4 in)	36 of 100 (Notable)
Canyon Dam	United States	Record daily snowfall	7.6 cm (3.0 in)	36 of 100 (Notable)
Woodfords	United States	Record daily snowfall	5.1 cm (2.0 in)	36 of 100 (Notable)
Solomons	United States	Record high maximum temperature	35.6 C (96.1 F)	36 of 100 (Notable)
Toombul Bowls Club	Australia	Record daily precipitation	60.2 mm (2.4 in)	35 of 100 (Notable)
Haparanda	Sweden	Record high minimum temperature	9.0 C (48.2 F)	35 of 100 (Notable)
Brooksville Chin Hill	United States	Record daily precipitation	38.9 mm (1.5 in)	35 of 100 (Notable)
Charleston	United States	Record daily precipitation	63.8 mm (2.5 in)	35 of 100 (Notable)
Rushville	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Rosedale	United States	Record high minimum temperature	22.8 C (73.0 F)	35 of 100 (Notable)

Counts by Type and Timescale

1,097 records

Records set or tied on 18 May 1974 by type: Highest daily maximum 86, Lowest daily maximum 188, Highest daily minimum 245, Lowest daily minimum 150, Heaviest daily rainfall 398, Heaviest daily snowfall 26, Deepest snow cover 4.

Records on 18 May 1974 by type
Record type	Records
Highest daily maximum	86
Lowest daily maximum	188
Highest daily minimum	245
Lowest daily minimum	150
Heaviest daily rainfall	398
Heaviest daily snowfall	26
Deepest snow cover	4

Records on 18 May 1974 by timescale: all-time 1, monthly 30, daily 1,066.

How Much Records Were Beaten By

888 broken records

Margins by which the 888 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 661.0. Ties are not counted.

Top 20 by Significance

18 May 1974

Top 20 records on 18 May 1974 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1974	Omsukchan, RU	all-time rain	50.0 mm (2.0 in)	17.7 mm (0.7 in)	31 years	72 of 100 (Major)
18 May 1974	Newton, US	daily rain	61.2 mm (2.4 in)	43.9 mm (1.7 in)	75 years	68 of 100 (Major)
18 May 1974	Gunnedah Pool, AU	daily rain	49.1 mm (1.9 in)	34.4 mm (1.4 in)	79 years	64 of 100 (Major)
18 May 1974	Cheviot Fells, ZA	daily rain	42.5 mm (1.7 in)	33.4 mm (1.3 in)	68 years	63 of 100 (Major)
18 May 1974	Mineral, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	64 years	62 of 100 (Major)
18 May 1974	Oregon, US	daily rain	95.3 mm (3.8 in)	64.3 mm (2.5 in)	47 years	62 of 100 (Major)
18 May 1974	Queimadas, BR	daily rain	34.2 mm (1.3 in)	27.7 mm (1.1 in)	49 years	60 of 100 (Major)
18 May 1974	Fremont 5 NW, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	63 years	58 of 100 (Notable)
18 May 1974	Amity 4 NE, US	daily rain	76.2 mm (3.0 in)	57.7 mm (2.3 in)	32 years	53 of 100 (Notable)
18 May 1974	Edgerton, US	daily rain	72.4 mm (2.9 in)	44.7 mm (1.8 in)	33 years	53 of 100 (Notable)
18 May 1974	Osceola, US	daily rain	79.0 mm (3.1 in)	30.7 mm (1.2 in)	72 years	52 of 100 (Notable)
18 May 1974	Bondi Bowling Club, AU	daily rain	100.2 mm (3.9 in)	71.0 mm (2.8 in)	29 years	51 of 100 (Notable)
18 May 1974	Lyons, US	daily rain	90.4 mm (3.6 in)	59.9 mm (2.4 in)	12 years	51 of 100 (Notable)
18 May 1974	Paisley, US	daily snowfall	11.7 cm (4.6 in)	11.7 cm (4.6 in)	68 years	51 of 100 (Notable)
18 May 1974	Bellata Post Office, AU	daily rain	44.4 mm (1.7 in)	34.5 mm (1.4 in)	60 years	50 of 100 (Notable)
18 May 1974	Hope A, CA	daily rain	37.6 mm (1.5 in)	29.0 mm (1.1 in)	20 years	50 of 100 (Notable)
18 May 1974	Talwood State School, AU	daily rain	67.0 mm (2.6 in)	35.0 mm (1.4 in)	60 years	48 of 100 (Notable)
18 May 1974	Grenfell (Quondong Rd), AU	daily rain	36.0 mm (1.4 in)	13.1 mm (0.5 in)	83 years	48 of 100 (Notable)
18 May 1974	Oakland 1 SE, US	daily rain	55.9 mm (2.2 in)	18.3 mm (0.7 in)	69 years	48 of 100 (Notable)
18 May 1974	Forbes (Camp Street), AU	daily rain	32.0 mm (1.3 in)	9.1 mm (0.36 in)	87 years	47 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 1974

Records set or tied on this calendar date in each year from 1796 to 1974. 1974 had 1,097 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 1974-05-18: 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 100	883
100 to 200	3
200 to 300	1
300 to 400	0
400 to 500	0
500 to 600	0
600 to 700	1