Weather Records on 15 May 1918

133 weather records were set or tied worldwide on 15 May 1918. Highest significance: Dromana, AU.

Key Facts for 15 May 1918

On 15 May 1918, 133 weather records were set or tied at long-record stations worldwide.
16 were record highs and 5 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 128 daily.
Dromana set a daily record precipitation of 44.5 mm (1.8 in) on 15 May 1918.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 433 records.

Record Map

133 stations

133 station records on 15 May 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 May 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dromana	Australia	Record daily precipitation	44.5 mm (1.8 in)	53 of 100 (Notable)
Dumosa	Australia	Record daily precipitation	34.8 mm (1.4 in)	48 of 100 (Notable)
Kerang (Tragowell)	Australia	Record daily precipitation	34.8 mm (1.4 in)	48 of 100 (Notable)
Swan Hill (Murray Downs)	Australia	Record daily precipitation	49.8 mm (2.0 in)	47 of 100 (Notable)
Koomooloo	Australia	Record daily precipitation	32.0 mm (1.3 in)	45 of 100 (Notable)
Wentworth (Cuthero)	Australia	Record daily precipitation	32.5 mm (1.3 in)	40 of 100 (Notable)
Litchfield	Australia	Record daily precipitation	33.3 mm (1.3 in)	40 of 100 (Notable)
Valencia Creek (Bulgar Park)	Australia	Record daily precipitation	35.8 mm (1.4 in)	37 of 100 (Notable)
Peterborough (Dawson)	Australia	Record daily precipitation	31.2 mm (1.2 in)	35 of 100 (Notable)
Manfred	Australia	Record daily precipitation	31.0 mm (1.2 in)	34 of 100 (Routine)
Donald Post Office	Australia	Record daily precipitation	31.8 mm (1.3 in)	33 of 100 (Routine)
Lake Corrong	Australia	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Tarrwong	Australia	Record daily precipitation	37.8 mm (1.5 in)	31 of 100 (Routine)
Bass (Kilcunda)	Australia	Record daily precipitation	58.4 mm (2.3 in)	31 of 100 (Routine)
Hawker (Warcowie)	Australia	Record daily precipitation	36.8 mm (1.4 in)	29 of 100 (Routine)
Emu Rail (Dalyenong)	Australia	Record daily precipitation	35.6 mm (1.4 in)	29 of 100 (Routine)
The Olives	Australia	Record daily precipitation	34.3 mm (1.4 in)	28 of 100 (Routine)
Eremeran	Australia	Record daily precipitation	36.6 mm (1.4 in)	27 of 100 (Routine)
Groongal (Groongal Station)	Australia	Record daily precipitation	53.3 mm (2.1 in)	27 of 100 (Routine)
Wooroonook	Australia	Record daily precipitation	29.5 mm (1.2 in)	26 of 100 (Routine)
Wallaloo	Australia	Record daily precipitation	36.1 mm (1.4 in)	25 of 100 (Routine)
Glen Dee	Australia	Record daily precipitation	32.3 mm (1.3 in)	24 of 100 (Routine)
Marree Comparison	Australia	Record daily precipitation	39.1 mm (1.5 in)	23 of 100 (Routine)
Violet Town	Australia	Record daily precipitation	43.4 mm (1.7 in)	23 of 100 (Routine)
Nekarboo	Australia	Record daily precipitation	31.2 mm (1.2 in)	22 of 100 (Routine)
Narraport	Australia	Record daily precipitation	31.5 mm (1.2 in)	21 of 100 (Routine)
Runnymede	Australia	Record daily precipitation	26.7 mm (1.1 in)	21 of 100 (Routine)
Talbot	Australia	Record daily precipitation	36.8 mm (1.4 in)	21 of 100 (Routine)
Overland Corner	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Morgan Post Office	Australia	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Lake Victoria (Cal-Lal)	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Buangor 1	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Dunkeld	Australia	Record daily precipitation	18.8 mm (0.7 in)	20 of 100 (Routine)
Dunolly	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Laen	Australia	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Warrnambool Shire Office	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Terowie	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Boola Boolka	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Port Pirie (Valencia)	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Tareena	Australia	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Penshurst (Post Office)	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Glenthompson (Brie Brie)	Australia	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Wickliffe	Australia	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Beeac (Eurack)	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Hawker (Holowilena)	Australia	Record daily precipitation	38.6 mm (1.5 in)	20 of 100 (Routine)
Whyte Yarcowie	Australia	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Briagolong	Australia	Record daily precipitation	29.2 mm (1.1 in)	20 of 100 (Routine)
Stony Mountain	Canada	Record daily snowfall	2.5 cm (1.0 in)	20 of 100 (Routine)
Darwin Post Office	Australia	Record daily precipitation	0.3 mm (0.01 in)	19 of 100 (Routine)
Alice Springs Post Office	Australia	Record high minimum temperature	15.6 C (60.1 F)	19 of 100 (Routine)
Cradock	Australia	Record daily precipitation	25.1 mm (1.0 in)	19 of 100 (Routine)
Binya Post Office	Australia	Record daily precipitation	26.7 mm (1.1 in)	19 of 100 (Routine)
Stawell	Australia	Record daily precipitation	19.3 mm (0.8 in)	19 of 100 (Routine)
Gammon Ranges (Wooltana)	Australia	Record daily precipitation	12.7 mm (0.5 in)	18 of 100 (Routine)
Johnburgh Post Office	Australia	Record daily precipitation	20.1 mm (0.8 in)	18 of 100 (Routine)
Marrabel	Australia	Record daily precipitation	17.8 mm (0.7 in)	18 of 100 (Routine)
Yarrabee Park	Australia	Record daily precipitation	25.9 mm (1.0 in)	18 of 100 (Routine)
Jeruk	Australia	Record daily precipitation	19.3 mm (0.8 in)	18 of 100 (Routine)
Warranooke (Glenorchy)	Australia	Record daily precipitation	22.9 mm (0.9 in)	18 of 100 (Routine)
Ararat Post Office	Australia	Record daily precipitation	21.8 mm (0.9 in)	18 of 100 (Routine)

Counts by Type and Timescale

133 records

Records set or tied on 15 May 1918 by type: Highest daily maximum 4, Lowest daily maximum 2, Highest daily minimum 12, Lowest daily minimum 3, Heaviest daily rainfall 110, Heaviest daily snowfall 2.

Records on 15 May 1918 by type
Record type	Records
Highest daily maximum	4
Lowest daily maximum	2
Highest daily minimum	12
Lowest daily minimum	3
Heaviest daily rainfall	110
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 15 May 1918 by timescale: all-time 0, monthly 5, daily 128.

How Much Records Were Beaten By

123 broken records

Margins by which the 123 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 36.9. Ties are not counted.

Top 20 by Significance

15 May 1918

Top 20 records on 15 May 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1918	Dromana, AU	daily rain	44.5 mm (1.8 in)	36.9 mm (1.5 in)	33 years	53 of 100 (Notable)
15 May 1918	Dumosa, AU	daily rain	34.8 mm (1.4 in)	23.9 mm (0.9 in)	19 years	48 of 100 (Notable)
15 May 1918	Kerang (Tragowell), AU	daily rain	34.8 mm (1.4 in)	27.9 mm (1.1 in)	19 years	48 of 100 (Notable)
15 May 1918	Swan Hill (Murray Downs), AU	daily rain	49.8 mm (2.0 in)	29.7 mm (1.2 in)	32 years	47 of 100 (Notable)
15 May 1918	Koomooloo, AU	daily rain	32.0 mm (1.3 in)	23.6 mm (0.9 in)	27 years	45 of 100 (Notable)
15 May 1918	Wentworth (Cuthero), AU	daily rain	32.5 mm (1.3 in)	27.4 mm (1.1 in)	30 years	40 of 100 (Notable)
15 May 1918	Litchfield, AU	daily rain	33.3 mm (1.3 in)	27.5 mm (1.1 in)	0 years	40 of 100 (Notable)
15 May 1918	Valencia Creek (Bulgar Park), AU	daily rain	35.8 mm (1.4 in)	29.4 mm (1.2 in)	15 years	37 of 100 (Notable)
15 May 1918	Peterborough (Dawson), AU	daily rain	31.2 mm (1.2 in)	20.3 mm (0.8 in)	27 years	35 of 100 (Notable)
15 May 1918	Manfred, AU	daily rain	31.0 mm (1.2 in)	19.8 mm (0.8 in)	19 years	34 of 100 (Routine)
15 May 1918	Donald Post Office, AU	daily rain	31.8 mm (1.3 in)	22.1 mm (0.9 in)	8 years	33 of 100 (Routine)
15 May 1918	Lake Corrong, AU	daily rain	27.9 mm (1.1 in)	20.3 mm (0.8 in)	19 years	32 of 100 (Routine)
15 May 1918	Tarrwong, AU	daily rain	37.8 mm (1.5 in)	22.6 mm (0.9 in)	8 years	31 of 100 (Routine)
15 May 1918	Bass (Kilcunda), AU	monthly rain	58.4 mm (2.3 in)	7.6 mm (0.30 in)	27 years	31 of 100 (Routine)
15 May 1918	Hawker (Warcowie), AU	daily rain	36.8 mm (1.4 in)	16.5 mm (0.6 in)	27 years	29 of 100 (Routine)
15 May 1918	Emu Rail (Dalyenong), AU	daily rain	35.6 mm (1.4 in)	19.6 mm (0.8 in)	8 years	29 of 100 (Routine)
15 May 1918	The Olives, AU	daily rain	34.3 mm (1.4 in)	27.7 mm (1.1 in)	3 years	28 of 100 (Routine)
15 May 1918	Eremeran, AU	daily rain	36.6 mm (1.4 in)	21.1 mm (0.8 in)	3 years	27 of 100 (Routine)
15 May 1918	Groongal (Groongal Station), AU	daily rain	53.3 mm (2.1 in)	22.8 mm (0.9 in)	8 years	27 of 100 (Routine)
15 May 1918	Wooroonook, AU	daily rain	29.5 mm (1.2 in)	16.3 mm (0.6 in)	8 years	26 of 100 (Routine)

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

1820 to 1918

Records set or tied on this calendar date in each year from 1820 to 1918. 1918 had 133 records.

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

Records on 05-15 in each year
Year	Records
1820	1
1825	1
1831	1
1832	1
1837	2
1845	1
1847	2
1848	1
1855	2
1857	2
1859	1
1862	1
1863	1
1865	1
1866	2
1867	1
1868	2
1870	1
1871	3
1874	2
1876	4
1878	1
1879	2
1881	1
1883	1
1885	1
1886	2
1888	3
1891	3
1893	5
1894	2
1895	4
1896	2
1897	4
1898	3
1899	9
1900	9
1901	2
1902	9
1903	4
1904	13
1905	16
1906	10
1907	27
1908	25
1909	89
1910	27
1911	27
1912	26
1913	60
1914	16
1915	236
1916	27
1917	80
1918	133
1919	25
1920	58
1921	92
1922	30
1923	125
1924	174
1925	100
1926	161
1927	191
1928	144
1929	161
1930	136
1931	459
1932	368
1933	439
1934	227
1935	288
1936	372
1937	373
1938	393
1939	351
1940	179
1941	454
1942	701
1943	568
1944	630
1945	588
1946	238
1947	334
1948	264
1949	363
1950	260
1951	736
1952	476
1953	426
1954	355
1955	538
1956	466
1957	521
1958	605
1959	764
1960	291
1961	508
1962	1,128
1963	782
1964	347
1965	320
1966	389
1967	609
1968	1,019
1969	790
1970	512
1971	351
1972	484
1973	818
1974	1,230
1975	372
1976	803
1977	1,186
1978	922
1979	404
1980	625
1981	586
1982	500
1983	1,215
1984	1,059
1985	649
1986	679
1987	1,073
1988	643
1989	552
1990	776
1991	1,179
1992	944
1993	784
1994	910
1995	1,750
1996	1,452
1997	1,175
1998	1,641
1999	810
2000	850
2001	1,280
2002	801
2003	1,023
2004	1,046
2005	767
2006	955
2007	949
2008	995
2009	675
2010	1,088
2011	1,298
2012	751
2013	1,081
2014	1,411
2015	717
2016	890
2017	435
2018	1,074
2019	627
2020	472
2021	412
2022	847
2023	566
2024	596
2025	801
2026	481

Download the Data

Data for records on 1918-05-15: 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 5	47
5 to 10	36
10 to 15	10
15 to 20	13
20 to 25	9
25 to 30	7
30 to 35	0
35 to 40	1