Weather Records on 18 May 1918

42 weather records were set or tied worldwide on 18 May 1918. Highest significance: Escanaba, US.

Key Facts for 18 May 1918

On 18 May 1918, 42 weather records were set or tied at long-record stations worldwide.
29 were record highs and 7 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 40 daily.
Escanaba set a daily record precipitation of 39.6 mm (1.6 in) on 18 May 1918.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 445 records.

Record Map

42 stations

42 station records on 18 May 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Escanaba	United States	Record daily precipitation	39.6 mm (1.6 in)	39 of 100 (Notable)
Green Bay	United States	Record daily precipitation	41.7 mm (1.6 in)	38 of 100 (Notable)
Edmonton	Canada	Record daily snowfall	7.6 cm (3.0 in)	29 of 100 (Routine)
Uccle	Belgium	Record high maximum temperature	27.2 C (81.0 F)	27 of 100 (Routine)
Rapid City Forrest	Canada	Record daily precipitation	25.9 mm (1.0 in)	26 of 100 (Routine)
Sydney	Canada	Record high maximum temperature	29.4 C (84.9 F)	26 of 100 (Routine)
Uppsala_Aut	Sweden	Record high minimum temperature	11.5 C (52.7 F)	24 of 100 (Routine)
Grenfell	Canada	Record daily snowfall	3.0 cm (1.2 in)	19 of 100 (Routine)
Kirchdorf/Poel	Germany	Record high maximum temperature	28.2 C (82.8 F)	19 of 100 (Routine)
Vestervig	Denmark	Record high minimum temperature	12.3 C (54.1 F)	18 of 100 (Routine)
Chatham	Canada	Record high maximum temperature	31.1 C (88.0 F)	17 of 100 (Routine)
Gavle	Sweden	Record high minimum temperature	12.0 C (53.6 F)	17 of 100 (Routine)
Hillview	Canada	Record daily precipitation	23.6 mm (0.9 in)	16 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	8.3 C (46.9 F)	15 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	32.2 C (90.0 F)	14 of 100 (Routine)
Stockholm	Sweden	Record high maximum temperature	24.5 C (76.1 F)	14 of 100 (Routine)
Barkerville	Canada	Record low maximum temperature	5.6 C (42.1 F)	13 of 100 (Routine)
Parry Sound	Canada	Record high minimum temperature	14.4 C (57.9 F)	13 of 100 (Routine)
Plauen	Germany	Record high maximum temperature	29.1 C (84.4 F)	13 of 100 (Routine)
Wrixum/Fohr	Germany	Record high minimum temperature	14.0 C (57.2 F)	13 of 100 (Routine)
Orebro	Sweden	Record high maximum temperature	24.0 C (75.2 F)	13 of 100 (Routine)
Bjuraker	Sweden	Record high minimum temperature	9.2 C (48.6 F)	13 of 100 (Routine)
Brisbane Regional Office	Australia	Record low minimum temperature	7.8 C (46.0 F)	12 of 100 (Routine)
Arnsberg	Germany	Record high maximum temperature	28.8 C (83.8 F)	12 of 100 (Routine)
Gavle	Sweden	Record high maximum temperature	25.0 C (77.0 F)	12 of 100 (Routine)
Halifax	Canada	Record high maximum temperature	29.4 C (84.9 F)	11 of 100 (Routine)
Belle Isle	Canada	Record low minimum temperature	-7.2 C (19.0 F)	11 of 100 (Routine)
Jokkmokk	Sweden	Record high minimum temperature	6.0 C (42.8 F)	11 of 100 (Routine)
Sandvig	Denmark	Record high minimum temperature	10.4 C (50.7 F)	10 of 100 (Routine)
Wrixum/Fohr	Germany	Record high maximum temperature	25.1 C (77.2 F)	10 of 100 (Routine)
Port Arthur	Canada	Record high minimum temperature	8.3 C (46.9 F)	9 of 100 (Routine)
Irkutsk	Russia	Record low minimum temperature	-6.4 C (20.5 F)	9 of 100 (Routine)
Skara 1	Sweden	Record high maximum temperature	24.5 C (76.1 F)	9 of 100 (Routine)
Edmonton	Canada	Record low minimum temperature	-3.9 C (25.0 F)	8 of 100 (Routine)
Nikolaevsk-Na-Amure	Russia	Record low minimum temperature	-4.6 C (23.7 F)	8 of 100 (Routine)
Saentis	Switzerland	Record high minimum temperature	3.0 C (37.4 F)	8 of 100 (Routine)
Charlottetown	Canada	Record high maximum temperature	27.2 C (81.0 F)	4 of 100 (Routine)
Peterborough	Canada	Record high maximum temperature	30.0 C (86.0 F)	2 of 100 (Routine)
Fort Chipewyan	Canada	Record low minimum temperature	-7.8 C (18.0 F)	1 of 100 (Routine)
Haliburton A	Canada	Record high maximum temperature	30.6 C (87.1 F)	1 of 100 (Routine)
Vanersborg	Sweden	Record high maximum temperature	23.0 C (73.4 F)	1 of 100 (Routine)
Anticosti SW Point	Canada	Record high maximum temperature	16.1 C (61.0 F)	0 of 100 (Routine)

Counts by Type and Timescale

42 records

Records set or tied on 18 May 1918 by type: Highest daily maximum 18, Lowest daily maximum 1, Highest daily minimum 11, Lowest daily minimum 6, Heaviest daily rainfall 4, Heaviest daily snowfall 2.

Records on 18 May 1918 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	1
Highest daily minimum	11
Lowest daily minimum	6
Heaviest daily rainfall	4
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 18 May 1918 by timescale: all-time 0, monthly 2, daily 40.

How Much Records Were Beaten By

36 broken records

Margins by which the 36 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.

Top 20 by Significance

18 May 1918

Top 20 records on 18 May 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1918	Escanaba, US	daily rain	39.6 mm (1.6 in)	23.1 mm (0.9 in)	27 years	39 of 100 (Notable)
18 May 1918	Green Bay, US	daily rain	41.7 mm (1.6 in)	21.9 mm (0.9 in)	28 years	38 of 100 (Notable)
18 May 1918	Edmonton, CA	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	36 years	29 of 100 (Routine)
18 May 1918	Uccle, BE	daily high max	27.2 C (81.0 F)	0.2 C (0.4 F)	65 years	27 of 100 (Routine)
18 May 1918	Rapid City Forrest, CA	daily rain	25.9 mm (1.0 in)	14.5 mm (0.6 in)	27 years	26 of 100 (Routine)
18 May 1918	Sydney, CA	monthly high max	29.4 C (84.9 F)	0.5 C (0.9 F)	40 years	26 of 100 (Routine)
18 May 1918	Uppsala_Aut, SE	daily high min	11.5 C (52.7 F)	2.8 C (5.0 F)	33 years	24 of 100 (Routine)
18 May 1918	Grenfell, CA	daily snowfall	3.0 cm (1.2 in)	3.0 cm (1.2 in)	33 years	19 of 100 (Routine)
18 May 1918	Kirchdorf/Poel, DE	daily high max	28.2 C (82.8 F)	3.6 C (6.5 F)	29 years	19 of 100 (Routine)
18 May 1918	Vestervig, DK	daily high min	12.3 C (54.1 F)	1.6 C (2.9 F)	27 years	18 of 100 (Routine)
18 May 1918	Chatham, CA	daily high max	31.1 C (88.0 F)	2.8 C (5.0 F)	32 years	17 of 100 (Routine)
18 May 1918	Gavle, SE	daily high min	12.0 C (53.6 F)	4.0 C (7.2 F)	12 years	17 of 100 (Routine)
18 May 1918	Hillview, CA	daily rain	23.6 mm (0.9 in)	7.6 mm (0.30 in)	16 years	16 of 100 (Routine)
18 May 1918	Pointe Au Pere, CA	daily high min	8.3 C (46.9 F)	1.6 C (2.9 F)	21 years	15 of 100 (Routine)
18 May 1918	Fredericton Unb, CA	daily high max	32.2 C (90.0 F)	1.6 C (2.9 F)	28 years	14 of 100 (Routine)
18 May 1918	Stockholm, SE	daily high max	24.5 C (76.1 F)	1.5 C (2.7 F)	29 years	14 of 100 (Routine)
18 May 1918	Barkerville, CA	daily low max	5.6 C (42.1 F)	1.1 C (2.0 F)	28 years	13 of 100 (Routine)
18 May 1918	Parry Sound, CA	daily high min	14.4 C (57.9 F)	0.5 C (0.9 F)	28 years	13 of 100 (Routine)
18 May 1918	Plauen, DE	daily high max	29.1 C (84.4 F)	0.1 C (0.2 F)	33 years	13 of 100 (Routine)
18 May 1918	Wrixum/Fohr, DE	daily high min	14.0 C (57.2 F)	0.9 C (1.6 F)	24 years	13 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 1918

Records set or tied on this calendar date in each year from 1796 to 1918. 1918 had 42 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 1918-05-18: 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	31
10 to 20	1
20 to 30	2
30 to 40	1
40 to 50	0
50 to 60	0
60 to 70	0
70 to 80	1