Weather Records on 18 May 1937

348 weather records were set or tied worldwide on 18 May 1937. Highest significance: Ashland, US.

Key Facts for 18 May 1937

On 18 May 1937, 348 weather records were set or tied at long-record stations worldwide.
143 were record highs and 18 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 25 monthly and 321 daily.
Ashland set a daily record precipitation of 28.4 mm (1.1 in) on 18 May 1937.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 443 records.

Record Map

348 stations

348 station records on 18 May 1937 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1937: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ashland	United States	Record daily precipitation	28.4 mm (1.1 in)	52 of 100 (Notable)
Umea	Sweden	Record daily precipitation	29.7 mm (1.2 in)	51 of 100 (Notable)
Jacksonville	United States	Record daily precipitation	31.2 mm (1.2 in)	51 of 100 (Notable)
Northam	Australia	Record daily precipitation	52.1 mm (2.1 in)	50 of 100 (Notable)
Toodyay	Australia	Record daily precipitation	58.2 mm (2.3 in)	50 of 100 (Notable)
Mount Florance	Australia	Record daily precipitation	43.7 mm (1.7 in)	49 of 100 (Notable)
Dongara	Australia	Record daily precipitation	58.4 mm (2.3 in)	49 of 100 (Notable)
Barramunga	Australia	Record daily precipitation	58.4 mm (2.3 in)	49 of 100 (Notable)
Williambury	Australia	Record daily precipitation	73.4 mm (2.9 in)	48 of 100 (Notable)
Cuttening	Australia	Record daily precipitation	35.8 mm (1.4 in)	48 of 100 (Notable)
Kellerberrin	Australia	Record daily precipitation	37.3 mm (1.5 in)	48 of 100 (Notable)
Meckering	Australia	Record daily precipitation	46.0 mm (1.8 in)	48 of 100 (Notable)
Carnarvon Post Office	Australia	Record daily precipitation	54.4 mm (2.1 in)	47 of 100 (Notable)
Nabawa	Australia	Record daily precipitation	41.4 mm (1.6 in)	47 of 100 (Notable)
Round Hill	Australia	Record daily precipitation	50.3 mm (2.0 in)	47 of 100 (Notable)
Wongan Hills	Australia	Record daily precipitation	53.8 mm (2.1 in)	47 of 100 (Notable)
Arrino	Australia	Record daily precipitation	51.3 mm (2.0 in)	47 of 100 (Notable)
Ely Park	Australia	Record daily precipitation	48.3 mm (1.9 in)	47 of 100 (Notable)
Nangeenan	Australia	Record daily precipitation	37.6 mm (1.5 in)	47 of 100 (Notable)
Beverley	Australia	Record daily precipitation	51.1 mm (2.0 in)	47 of 100 (Notable)
Talbot House	Australia	Record daily precipitation	43.4 mm (1.7 in)	47 of 100 (Notable)
Strawberry North	Australia	Record daily precipitation	59.4 mm (2.3 in)	46 of 100 (Notable)
Three Springs	Australia	Record daily precipitation	52.6 mm (2.1 in)	46 of 100 (Notable)
Gingin	Australia	Record daily precipitation	59.9 mm (2.4 in)	46 of 100 (Notable)
Wannamal	Australia	Record daily precipitation	47.8 mm (1.9 in)	46 of 100 (Notable)
Baandee	Australia	Record daily precipitation	34.3 mm (1.4 in)	46 of 100 (Notable)
Berry Brow	Australia	Record daily precipitation	54.4 mm (2.1 in)	46 of 100 (Notable)
Okhimath	India	Record daily precipitation	50.8 mm (2.0 in)	45 of 100 (Notable)
Nangetty	Australia	Record daily precipitation	38.9 mm (1.5 in)	44 of 100 (Notable)
Dandaragan	Australia	Record daily precipitation	52.8 mm (2.1 in)	43 of 100 (Notable)
Mingenew	Australia	Record daily precipitation	40.9 mm (1.6 in)	42 of 100 (Notable)
Doongin Peak	Australia	Record daily precipitation	56.9 mm (2.2 in)	42 of 100 (Notable)
Codg Codgen	Australia	Record daily precipitation	36.1 mm (1.4 in)	42 of 100 (Notable)
Learmonth	Australia	Record daily precipitation	33.0 mm (1.3 in)	42 of 100 (Notable)
Khutauna	India	Record daily precipitation	71.1 mm (2.8 in)	42 of 100 (Notable)
Mount Caroline	Australia	Record daily precipitation	61.0 mm (2.4 in)	41 of 100 (Notable)
Walebing	Australia	Record daily precipitation	41.9 mm (1.6 in)	40 of 100 (Notable)
Bunkin	Australia	Record daily precipitation	39.4 mm (1.6 in)	40 of 100 (Notable)
Mardie	Australia	Record daily precipitation	130.6 mm (5.1 in)	39 of 100 (Notable)
Doorawarrah	Australia	Record daily precipitation	70.1 mm (2.8 in)	39 of 100 (Notable)
Jerramungup	Australia	Record daily precipitation	39.9 mm (1.6 in)	39 of 100 (Notable)
Mullewa	Australia	Record daily precipitation	36.8 mm (1.4 in)	37 of 100 (Notable)
New Norcia	Australia	Record daily precipitation	38.4 mm (1.5 in)	36 of 100 (Notable)
Berkshire Valley	Australia	Record daily precipitation	39.4 mm (1.6 in)	35 of 100 (Notable)
Greenough	Australia	Record daily precipitation	64.0 mm (2.5 in)	35 of 100 (Notable)
Pardelup	Australia	Record daily precipitation	32.5 mm (1.3 in)	35 of 100 (Notable)
Ejanding	Australia	Record daily precipitation	55.4 mm (2.2 in)	35 of 100 (Notable)
King River	Australia	Record daily precipitation	30.5 mm (1.2 in)	34 of 100 (Routine)
Millerton	United States	Record daily precipitation	56.4 mm (2.2 in)	34 of 100 (Routine)
Narrogin	Australia	Record daily precipitation	40.6 mm (1.6 in)	33 of 100 (Routine)
Landscape Hill	Australia	Record daily precipitation	59.4 mm (2.3 in)	33 of 100 (Routine)
Sandsprings	Australia	Record daily precipitation	33.3 mm (1.3 in)	32 of 100 (Routine)
El Paso	United States	Record high minimum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Mangaroon	Australia	Record daily precipitation	41.7 mm (1.6 in)	31 of 100 (Routine)
Minnie Creek	Australia	Record daily precipitation	54.6 mm (2.1 in)	31 of 100 (Routine)
Greenfield	United States	Record daily precipitation	40.4 mm (1.6 in)	31 of 100 (Routine)
Gascoyne Junction	Australia	Record daily precipitation	81.8 mm (3.2 in)	30 of 100 (Routine)
Deeside	Australia	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
Pinjarra	Australia	Record daily precipitation	85.6 mm (3.4 in)	30 of 100 (Routine)
Burracoppin	Australia	Record daily precipitation	48.3 mm (1.9 in)	30 of 100 (Routine)

Counts by Type and Timescale

348 records

Records set or tied on 18 May 1937 by type: Highest daily maximum 75, Lowest daily maximum 12, Highest daily minimum 68, Lowest daily minimum 6, Heaviest daily rainfall 187.

Records on 18 May 1937 by type
Record type	Records
Highest daily maximum	75
Lowest daily maximum	12
Highest daily minimum	68
Lowest daily minimum	6
Heaviest daily rainfall	187
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 May 1937 by timescale: all-time 2, monthly 25, daily 321.

How Much Records Were Beaten By

292 broken records

Margins by which the 292 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 65.8. Ties are not counted.

Top 20 by Significance

18 May 1937

Top 20 records on 18 May 1937 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1937	Ashland, US	daily rain	28.4 mm (1.1 in)	20.0 mm (0.8 in)	28 years	52 of 100 (Notable)
18 May 1937	Umea, SE	daily rain	29.7 mm (1.2 in)	12.2 mm (0.5 in)	67 years	51 of 100 (Notable)
18 May 1937	Jacksonville, US	daily rain	31.2 mm (1.2 in)	20.3 mm (0.8 in)	24 years	51 of 100 (Notable)
18 May 1937	Northam, AU	daily rain	52.1 mm (2.1 in)	44.0 mm (1.7 in)	14 years	50 of 100 (Notable)
18 May 1937	Toodyay, AU	daily rain	58.2 mm (2.3 in)	49.3 mm (1.9 in)	14 years	50 of 100 (Notable)
18 May 1937	Mount Florance, AU	daily rain	43.7 mm (1.7 in)	43.7 mm (1.7 in)	45 years	49 of 100 (Notable)
18 May 1937	Dongara, AU	daily rain	58.4 mm (2.3 in)	45.7 mm (1.8 in)	14 years	49 of 100 (Notable)
18 May 1937	Barramunga, AU	daily rain	58.4 mm (2.3 in)	34.8 mm (1.4 in)	24 years	49 of 100 (Notable)
18 May 1937	Williambury, AU	daily rain	73.4 mm (2.9 in)	65.8 mm (2.6 in)	11 years	48 of 100 (Notable)
18 May 1937	Cuttening, AU	daily rain	35.8 mm (1.4 in)	27.4 mm (1.1 in)	15 years	48 of 100 (Notable)
18 May 1937	Kellerberrin, AU	daily rain	37.3 mm (1.5 in)	29.2 mm (1.1 in)	15 years	48 of 100 (Notable)
18 May 1937	Meckering, AU	daily rain	46.0 mm (1.8 in)	34.6 mm (1.4 in)	15 years	48 of 100 (Notable)
18 May 1937	Carnarvon Post Office, AU	daily rain	54.4 mm (2.1 in)	48.3 mm (1.9 in)	15 years	47 of 100 (Notable)
18 May 1937	Nabawa, AU	daily rain	41.4 mm (1.6 in)	34.0 mm (1.3 in)	14 years	47 of 100 (Notable)
18 May 1937	Round Hill, AU	daily rain	50.3 mm (2.0 in)	44.7 mm (1.8 in)	14 years	47 of 100 (Notable)
18 May 1937	Wongan Hills, AU	daily rain	53.8 mm (2.1 in)	46.4 mm (1.8 in)	14 years	47 of 100 (Notable)
18 May 1937	Arrino, AU	daily rain	51.3 mm (2.0 in)	37.6 mm (1.5 in)	12 years	47 of 100 (Notable)
18 May 1937	Ely Park, AU	daily rain	48.3 mm (1.9 in)	41.7 mm (1.6 in)	15 years	47 of 100 (Notable)
18 May 1937	Nangeenan, AU	daily rain	37.6 mm (1.5 in)	31.2 mm (1.2 in)	15 years	47 of 100 (Notable)
18 May 1937	Beverley, AU	daily rain	51.1 mm (2.0 in)	34.6 mm (1.4 in)	11 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 1937

Records set or tied on this calendar date in each year from 1796 to 1937. 1937 had 348 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 1937-05-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	203
10 to 20	31
20 to 30	29
30 to 40	13
40 to 50	14
50 to 60	1
60 to 70	1