Weather Records on 18 May 1944

496 weather records were set or tied worldwide on 18 May 1944. Highest significance: Cap Madeleine, CA.

Key Facts for 18 May 1944

On 18 May 1944, 496 weather records were set or tied at long-record stations worldwide.
171 were record highs and 102 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 21 monthly and 473 daily.
Cap Madeleine set a daily record snowfall of 31.8 cm (12.5 in) on 18 May 1944.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 442 records.

Record Map

496 stations

496 station records on 18 May 1944 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1944: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cap Madeleine	Canada	Record daily snowfall	31.8 cm (12.5 in)	64 of 100 (Major)
Nukarni	Australia	Record daily precipitation	61.0 mm (2.4 in)	55 of 100 (Notable)
Nokaning	Australia	Record daily precipitation	60.7 mm (2.4 in)	55 of 100 (Notable)
Trayning	Australia	Record daily precipitation	69.3 mm (2.7 in)	55 of 100 (Notable)
Myrup	Australia	Record daily precipitation	38.1 mm (1.5 in)	54 of 100 (Notable)
Edgeley 3WNW	United States	Record daily precipitation	51.1 mm (2.0 in)	51 of 100 (Notable)
Dowerin	Australia	Record daily precipitation	47.0 mm (1.9 in)	50 of 100 (Notable)
Scaddan Post Office	Australia	Record daily precipitation	43.2 mm (1.7 in)	50 of 100 (Notable)
Pocahontas	United States	Record daily precipitation	72.4 mm (2.9 in)	50 of 100 (Notable)
Green Rvr	United States	Record daily precipitation	38.1 mm (1.5 in)	50 of 100 (Notable)
Prospect	Australia	Record daily precipitation	37.6 mm (1.5 in)	49 of 100 (Notable)
Grass Patch	Australia	Record daily precipitation	47.5 mm (1.9 in)	49 of 100 (Notable)
Steamboat Springs	United States	Record daily snowfall	17.8 cm (7.0 in)	49 of 100 (Notable)
Kangra	India	Record daily precipitation	45.0 mm (1.8 in)	47 of 100 (Notable)
Dobra Scritia	Australia	Record daily precipitation	48.3 mm (1.9 in)	46 of 100 (Notable)
Hosadurga	India	Record daily precipitation	102.9 mm (4.1 in)	46 of 100 (Notable)
Merredin Research Station	Australia	Record daily precipitation	49.3 mm (1.9 in)	44 of 100 (Notable)
Norris Madison Pwr House	United States	Record daily precipitation	63.0 mm (2.5 in)	44 of 100 (Notable)
Nungarin	Australia	Record daily precipitation	58.7 mm (2.3 in)	43 of 100 (Notable)
Ravensthorpe	Australia	Record daily precipitation	39.1 mm (1.5 in)	43 of 100 (Notable)
Red Lodge	United States	Record daily precipitation	60.7 mm (2.4 in)	43 of 100 (Notable)
Mangowine	Australia	Record daily precipitation	48.8 mm (1.9 in)	42 of 100 (Notable)
Codg Codgen	Australia	Record daily precipitation	54.6 mm (2.1 in)	42 of 100 (Notable)
Bridger 2 N	United States	Record daily precipitation	35.1 mm (1.4 in)	42 of 100 (Notable)
Southern Cross	Australia	Record daily precipitation	31.8 mm (1.3 in)	41 of 100 (Notable)
Tracy	United States	Record daily precipitation	43.7 mm (1.7 in)	41 of 100 (Notable)
Bullfinch	Australia	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Cap Madeleine	Canada	Record daily precipitation	31.8 mm (1.3 in)	39 of 100 (Notable)
Norseman	Australia	Record daily precipitation	42.2 mm (1.7 in)	38 of 100 (Notable)
Lanaubra	Australia	Record daily precipitation	54.6 mm (2.1 in)	37 of 100 (Notable)
Brookings 2 NE	United States	Record daily precipitation	65.0 mm (2.6 in)	37 of 100 (Notable)
Kirami	Australia	Record daily precipitation	50.8 mm (2.0 in)	36 of 100 (Notable)
Kayballup	Australia	Record daily precipitation	31.5 mm (1.2 in)	36 of 100 (Notable)
Spencer 1 N	United States	Record daily precipitation	45.7 mm (1.8 in)	36 of 100 (Notable)
Merredin	Australia	Record daily precipitation	49.3 mm (1.9 in)	35 of 100 (Notable)
Talegaon D-Dhera	India	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Medha	India	Record daily precipitation	43.2 mm (1.7 in)	35 of 100 (Notable)
White Sulphur Springs	United States	Record daily precipitation	28.4 mm (1.1 in)	35 of 100 (Notable)
Kununoppin	Australia	Record daily precipitation	73.7 mm (2.9 in)	34 of 100 (Routine)
Point Pleasant	United States	Record daily precipitation	32.5 mm (1.3 in)	34 of 100 (Routine)
Esperance Post Office	Australia	Record daily precipitation	36.6 mm (1.4 in)	33 of 100 (Routine)
Virginia City	United States	Record daily precipitation	41.9 mm (1.6 in)	33 of 100 (Routine)
Friars Well	Australia	Record daily precipitation	52.3 mm (2.1 in)	32 of 100 (Routine)
Jagalur	India	Record daily precipitation	48.3 mm (1.9 in)	32 of 100 (Routine)
Sagar	India	Record daily precipitation	36.8 mm (1.4 in)	32 of 100 (Routine)
Campbell	United States	Record daily precipitation	52.1 mm (2.1 in)	32 of 100 (Routine)
Dillon U of Montana Western	United States	Record daily precipitation	36.3 mm (1.4 in)	32 of 100 (Routine)
Goomalling	Australia	Record daily precipitation	42.2 mm (1.7 in)	31 of 100 (Routine)
Jenna Pullin	Australia	Record daily precipitation	26.9 mm (1.1 in)	31 of 100 (Routine)
Kiama Bowling Club	Australia	Record daily precipitation	49.8 mm (2.0 in)	31 of 100 (Routine)
Narasimharajapura	India	Record daily precipitation	64.0 mm (2.5 in)	31 of 100 (Routine)
Spencer	United States	Record daily precipitation	45.0 mm (1.8 in)	31 of 100 (Routine)
Mtn View 91	United States	Record daily precipitation	77.5 mm (3.1 in)	31 of 100 (Routine)
Steamboat Springs	United States	Record daily precipitation	43.2 mm (1.7 in)	30 of 100 (Routine)
Rapelje	United States	Record daily precipitation	59.9 mm (2.4 in)	29 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Burragate Post Office	Australia	Record daily precipitation	30.2 mm (1.2 in)	28 of 100 (Routine)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	28.4 mm (1.1 in)	27 of 100 (Routine)
Baindur	India	Record daily precipitation	69.9 mm (2.8 in)	27 of 100 (Routine)
Butte Bert Mooney AP	United States	Record daily precipitation	27.7 mm (1.1 in)	27 of 100 (Routine)

Counts by Type and Timescale

496 records

Records set or tied on 18 May 1944 by type: Highest daily maximum 88, Lowest daily maximum 48, Highest daily minimum 83, Lowest daily minimum 54, Heaviest daily rainfall 218, Heaviest daily snowfall 5.

Records on 18 May 1944 by type
Record type	Records
Highest daily maximum	88
Lowest daily maximum	48
Highest daily minimum	83
Lowest daily minimum	54
Heaviest daily rainfall	218
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 18 May 1944 by timescale: all-time 2, monthly 21, daily 473.

How Much Records Were Beaten By

385 broken records

Margins by which the 385 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 318.0. Ties are not counted.

Top 20 by Significance

18 May 1944

Top 20 records on 18 May 1944 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1944	Cap Madeleine, CA	daily snowfall	31.8 cm (12.5 in)	31.8 cm (12.5 in)	60 years	64 of 100 (Major)
18 May 1944	Nukarni, AU	monthly rain	61.0 mm (2.4 in)	29.8 mm (1.2 in)	7 years	55 of 100 (Notable)
18 May 1944	Nokaning, AU	monthly rain	60.7 mm (2.4 in)	29.7 mm (1.2 in)	7 years	55 of 100 (Notable)
18 May 1944	Trayning, AU	monthly rain	69.3 mm (2.7 in)	27.4 mm (1.1 in)	7 years	55 of 100 (Notable)
18 May 1944	Myrup, AU	daily rain	38.1 mm (1.5 in)	32.8 mm (1.3 in)	37 years	54 of 100 (Notable)
18 May 1944	Edgeley 3WNW, US	daily rain	51.1 mm (2.0 in)	41.4 mm (1.6 in)	42 years	51 of 100 (Notable)
18 May 1944	Dowerin, AU	daily rain	47.0 mm (1.9 in)	36.6 mm (1.4 in)	21 years	50 of 100 (Notable)
18 May 1944	Scaddan Post Office, AU	daily rain	43.2 mm (1.7 in)	31.3 mm (1.2 in)	26 years	50 of 100 (Notable)
18 May 1944	Pocahontas, US	daily rain	72.4 mm (2.9 in)	51.1 mm (2.0 in)	23 years	50 of 100 (Notable)
18 May 1944	Green Rvr, US	daily rain	38.1 mm (1.5 in)	35.6 mm (1.4 in)	21 years	50 of 100 (Notable)
18 May 1944	Prospect, AU	daily rain	37.6 mm (1.5 in)	29.5 mm (1.2 in)	22 years	49 of 100 (Notable)
18 May 1944	Grass Patch, AU	daily rain	47.5 mm (1.9 in)	41.1 mm (1.6 in)	22 years	49 of 100 (Notable)
18 May 1944	Steamboat Springs, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	50 years	49 of 100 (Notable)
18 May 1944	Kangra, IN	daily rain	45.0 mm (1.8 in)	32.8 mm (1.3 in)	41 years	47 of 100 (Notable)
18 May 1944	Dobra Scritia, AU	daily rain	48.3 mm (1.9 in)	34.3 mm (1.4 in)	7 years	46 of 100 (Notable)
18 May 1944	Hosadurga, IN	daily rain	102.9 mm (4.1 in)	75.0 mm (3.0 in)	9 years	46 of 100 (Notable)
18 May 1944	Merredin Research Station, AU	monthly rain	49.3 mm (1.9 in)	15.5 mm (0.6 in)	23 years	44 of 100 (Notable)
18 May 1944	Norris Madison Pwr House, US	daily rain	63.0 mm (2.5 in)	41.4 mm (1.6 in)	6 years	44 of 100 (Notable)
18 May 1944	Nungarin, AU	monthly rain	58.7 mm (2.3 in)	16.5 mm (0.6 in)	7 years	43 of 100 (Notable)
18 May 1944	Ravensthorpe, AU	daily rain	39.1 mm (1.5 in)	28.4 mm (1.1 in)	2 years	43 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 1944

Records set or tied on this calendar date in each year from 1796 to 1944. 1944 had 496 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 1944-05-18: 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 50	380
50 to 100	3
100 to 150	0
150 to 200	1
200 to 250	0
250 to 300	0
300 to 350	1