Weather Records on 18 May 1911

64 weather records were set or tied worldwide on 18 May 1911. Highest significance: Mantova, IT.

Key Facts for 18 May 1911

On 18 May 1911, 64 weather records were set or tied at long-record stations worldwide.
17 were record highs and 1 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 61 daily.
Mantova set a daily record precipitation of 34.0 mm (1.3 in) on 18 May 1911.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 445 records.

Record Map

64 stations

64 station records on 18 May 1911 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1911: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mantova	Italy	Record daily precipitation	34.0 mm (1.3 in)	57 of 100 (Notable)
Hohenpeissenberg	Germany	Record daily precipitation	29.1 mm (1.1 in)	54 of 100 (Notable)
Wickliffe	Australia	Record daily precipitation	26.7 mm (1.1 in)	33 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record daily precipitation	28.9 mm (1.1 in)	31 of 100 (Routine)
Ararat Post Office	Australia	Record daily precipitation	27.7 mm (1.1 in)	30 of 100 (Routine)
Kaarimba	Australia	Record daily precipitation	35.8 mm (1.4 in)	26 of 100 (Routine)
Hvar	Croatia	Record daily precipitation	26.5 mm (1.0 in)	25 of 100 (Routine)
Puckawidgee Back	Australia	Record daily precipitation	30.0 mm (1.2 in)	24 of 100 (Routine)
Blackwood	Australia	Record daily precipitation	27.7 mm (1.1 in)	23 of 100 (Routine)
Hay (Miller Street)	Australia	Record daily precipitation	30.5 mm (1.2 in)	22 of 100 (Routine)
Winbar	Australia	Record daily precipitation	25.7 mm (1.0 in)	21 of 100 (Routine)
Mortlake	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Berrybank	Australia	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Pesaro	Italy	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Barellan Post Office	Australia	Record daily precipitation	24.4 mm (1.0 in)	19 of 100 (Routine)
Mount Bute	Australia	Record daily precipitation	13.2 mm (0.5 in)	19 of 100 (Routine)
Hamilton	Australia	Record daily precipitation	14.5 mm (0.6 in)	19 of 100 (Routine)
Warrnambool Shire Office	Australia	Record daily precipitation	20.1 mm (0.8 in)	19 of 100 (Routine)
Burra Burra	Australia	Record daily precipitation	25.9 mm (1.0 in)	18 of 100 (Routine)
Youngara 1	Australia	Record daily precipitation	21.3 mm (0.8 in)	18 of 100 (Routine)
Binya (Merribee)	Australia	Record daily precipitation	20.3 mm (0.8 in)	18 of 100 (Routine)
Warwillah	Australia	Record daily precipitation	26.7 mm (1.1 in)	18 of 100 (Routine)
Milan	Italy	Record daily precipitation	14.7 mm (0.6 in)	18 of 100 (Routine)
Nerchinskij Zavod	Russia	Record daily precipitation	12.3 mm (0.5 in)	18 of 100 (Routine)
Kerang (Tragowell)	Australia	Record daily precipitation	19.3 mm (0.8 in)	17 of 100 (Routine)
Hamilton	Canada	Record high maximum temperature	32.8 C (91.0 F)	16 of 100 (Routine)
Milwaukee Wb City	United States	Record high maximum temperature	31.1 C (88.0 F)	16 of 100 (Routine)
Dubbo (Darling Street)	Australia	Record daily precipitation	21.8 mm (0.9 in)	15 of 100 (Routine)
Wallaloo	Australia	Record daily precipitation	12.4 mm (0.5 in)	15 of 100 (Routine)
Ilulissat (Jakobshavn)	Greenland [Denmark]	Record high minimum temperature	1.6 C (34.9 F)	15 of 100 (Routine)
Skara 1	Sweden	Record daily precipitation	12.8 mm (0.5 in)	15 of 100 (Routine)
La Crosse Wb City	United States	Record high minimum temperature	21.1 C (70.0 F)	15 of 100 (Routine)
Halls Gap	Australia	Record daily precipitation	16.8 mm (0.7 in)	14 of 100 (Routine)
Ladismith (Tnk)	South Africa	Record daily precipitation	10.9 mm (0.4 in)	14 of 100 (Routine)
Dubuque River	United States	Record high minimum temperature	21.1 C (70.0 F)	14 of 100 (Routine)
Kerang	Australia	Record daily precipitation	20.1 mm (0.8 in)	12 of 100 (Routine)
Bridgewater (Memsie)	Australia	Record daily precipitation	22.4 mm (0.9 in)	12 of 100 (Routine)
Smeaton Weir	Australia	Record daily precipitation	18.8 mm (0.7 in)	12 of 100 (Routine)
Castlemaine	Australia	Record daily precipitation	27.7 mm (1.1 in)	12 of 100 (Routine)
Huron Rgnl AP	United States	Record high maximum temperature	33.3 C (91.9 F)	11 of 100 (Routine)
Hill End Post Office	Australia	Record daily precipitation	17.3 mm (0.7 in)	10 of 100 (Routine)
Albury	Australia	Record daily precipitation	26.2 mm (1.0 in)	10 of 100 (Routine)
Burrabogie	Australia	Record daily precipitation	25.7 mm (1.0 in)	10 of 100 (Routine)
Groongal (Groongal Station)	Australia	Record daily precipitation	14.2 mm (0.6 in)	10 of 100 (Routine)
Stonecliffe	Canada	Record high minimum temperature	13.3 C (55.9 F)	10 of 100 (Routine)
Beaufort West (Met)	South Africa	Record daily precipitation	5.6 mm (0.22 in)	10 of 100 (Routine)
Toledo Blade	United States	Record high maximum temperature	32.2 C (90.0 F)	10 of 100 (Routine)
La Crosse Wb City	United States	Record high maximum temperature	32.2 C (90.0 F)	10 of 100 (Routine)
Arhangelsk	Russia	Record low minimum temperature	-5.8 C (21.6 F)	9 of 100 (Routine)
Narromine (Mumble Peg)	Australia	Record daily precipitation	32.3 mm (1.3 in)	8 of 100 (Routine)
Wentworth (Avoca)	Australia	Record daily precipitation	5.3 mm (0.21 in)	7 of 100 (Routine)
Barraba Post Office	Australia	Record daily precipitation	9.1 mm (0.36 in)	6 of 100 (Routine)
Forbes (Camp Street)	Australia	Record high minimum temperature	14.4 C (57.9 F)	6 of 100 (Routine)
Hambantota	Sri Lanka	Record high maximum temperature	34.5 C (94.1 F)	6 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	35.0 C (95.0 F)	6 of 100 (Routine)
Alexandra (Post Office)	Australia	Record daily precipitation	21.1 mm (0.8 in)	5 of 100 (Routine)
Port Stanley	Canada	Record high maximum temperature	26.7 C (80.1 F)	5 of 100 (Routine)
Huron Rgnl AP	United States	Record high minimum temperature	18.3 C (64.9 F)	5 of 100 (Routine)
Collendina	Australia	Record daily precipitation	24.1 mm (0.9 in)	4 of 100 (Routine)
Trenton 2	United States	Record high maximum temperature	35.0 C (95.0 F)	4 of 100 (Routine)

Counts by Type and Timescale

64 records

Records set or tied on 18 May 1911 by type: Highest daily maximum 10, Highest daily minimum 7, Lowest daily minimum 1, Heaviest daily rainfall 46.

Records on 18 May 1911 by type
Record type	Records
Highest daily maximum	10
Lowest daily maximum	0
Highest daily minimum	7
Lowest daily minimum	1
Heaviest daily rainfall	46
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 May 1911 by timescale: all-time 0, monthly 3, daily 61.

How Much Records Were Beaten By

59 broken records

Margins by which the 59 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 23.4. Ties are not counted.

Top 20 by Significance

18 May 1911

Top 20 records on 18 May 1911 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1911	Mantova, IT	daily rain	34.0 mm (1.3 in)	23.4 mm (0.9 in)	67 years	57 of 100 (Notable)
18 May 1911	Hohenpeissenberg, DE	daily rain	29.1 mm (1.1 in)	10.6 mm (0.4 in)	106 years	54 of 100 (Notable)
18 May 1911	Wickliffe, AU	daily rain	26.7 mm (1.1 in)	14.0 mm (0.6 in)	14 years	33 of 100 (Routine)
18 May 1911	Koebenhavn: Landbohojskolen-1, DK	monthly rain	28.9 mm (1.1 in)	4.9 mm (0.19 in)	21 years	31 of 100 (Routine)
18 May 1911	Ararat Post Office, AU	daily rain	27.7 mm (1.1 in)	12.5 mm (0.5 in)	28 years	30 of 100 (Routine)
18 May 1911	Kaarimba, AU	daily rain	35.8 mm (1.4 in)	14.7 mm (0.6 in)	16 years	26 of 100 (Routine)
18 May 1911	Hvar, HR	daily rain	26.5 mm (1.0 in)	15.0 mm (0.6 in)	8 years	25 of 100 (Routine)
18 May 1911	Puckawidgee Back, AU	daily rain	30.0 mm (1.2 in)	11.5 mm (0.5 in)	24 years	24 of 100 (Routine)
18 May 1911	Blackwood, AU	daily rain	27.7 mm (1.1 in)	13.0 mm (0.5 in)	20 years	23 of 100 (Routine)
18 May 1911	Hay (Miller Street), AU	daily rain	30.5 mm (1.2 in)	9.4 mm (0.37 in)	24 years	22 of 100 (Routine)
18 May 1911	Winbar, AU	daily rain	25.7 mm (1.0 in)	21.1 mm (0.8 in)	10 years	21 of 100 (Routine)
18 May 1911	Mortlake, AU	daily rain	24.1 mm (0.9 in)	14.4 mm (0.6 in)	17 years	20 of 100 (Routine)
18 May 1911	Berrybank, AU	daily rain	14.7 mm (0.6 in)	7.6 mm (0.30 in)	10 years	20 of 100 (Routine)
18 May 1911	Pesaro, IT	daily rain	14.0 mm (0.6 in)	11.5 mm (0.5 in)	10 years	20 of 100 (Routine)
18 May 1911	Barellan Post Office, AU	daily rain	24.4 mm (1.0 in)	13.5 mm (0.5 in)	1 year	19 of 100 (Routine)
18 May 1911	Mount Bute, AU	daily rain	13.2 mm (0.5 in)	6.8 mm (0.27 in)	18 years	19 of 100 (Routine)
18 May 1911	Hamilton, AU	daily rain	14.5 mm (0.6 in)	7.4 mm (0.29 in)	10 years	19 of 100 (Routine)
18 May 1911	Warrnambool Shire Office, AU	daily rain	20.1 mm (0.8 in)	6.6 mm (0.26 in)	19 years	19 of 100 (Routine)
18 May 1911	Burra Burra, AU	daily rain	25.9 mm (1.0 in)	10.2 mm (0.4 in)	20 years	18 of 100 (Routine)
18 May 1911	Youngara 1, AU	daily rain	21.3 mm (0.8 in)	5.3 mm (0.21 in)	24 years	18 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

1796 to 1911

Records set or tied on this calendar date in each year from 1796 to 1911. 1911 had 64 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 1911-05-18: 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).

Histogram of margins by which records were beaten on 18 May 1911
Margin	Records
0 to 5	31
5 to 10	13
10 to 15	12
15 to 20	1
20 to 25	2