Weather Records on 11 April 1918

43 weather records were set or tied worldwide on 11 April 1918. Highest significance: Chatham 2, CA.

Key Facts for 11 April 1918

On 11 April 1918, 43 weather records were set or tied at long-record stations worldwide.
8 were record highs and 20 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 42 daily.
Chatham 2 set a daily record snowfall of 6.4 cm (2.5 in) on 11 April 1918.
Across 164 earlier years (1800 to 2026) the same calendar date averaged 483 records.

Record Map

43 stations

43 station records on 11 April 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 April 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chatham 2	Canada	Record daily snowfall	6.4 cm (2.5 in)	26 of 100 (Routine)
Frankfurt/Main (Feldbergstr.)	Germany	Record daily precipitation	16.6 mm (0.7 in)	20 of 100 (Routine)
Kunzelsau	Germany	Record daily precipitation	20.2 mm (0.8 in)	20 of 100 (Routine)
Ny City Cntrl Park	United States	Record daily snowfall	1.0 cm (0.4 in)	20 of 100 (Routine)
Zametchino	Russia	Record daily precipitation	6.7 mm (0.26 in)	20 of 100 (Routine)
Montgomery Wb City	United States	Record low minimum temperature	1.7 C (35.1 F)	19 of 100 (Routine)
Jacksonville Wb City	United States	Record low maximum temperature	15.6 C (60.1 F)	18 of 100 (Routine)
Ivanhoe (Wokabity)	Australia	Record daily precipitation	0.8 mm (0.03 in)	17 of 100 (Routine)
Gunnedah Pool	Australia	Record low minimum temperature	5.0 C (41.0 F)	17 of 100 (Routine)
Hamilton	Canada	Record daily snowfall	7.6 cm (3.0 in)	17 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record high minimum temperature	6.8 C (44.2 F)	17 of 100 (Routine)
Somerville 4 NW	United States	Record daily snowfall	1.3 cm (0.5 in)	17 of 100 (Routine)
World Trade Ctr	United States	Record daily snowfall	2.5 cm (1.0 in)	17 of 100 (Routine)
Kremsmuenster	Austria	Record high minimum temperature	7.8 C (46.0 F)	16 of 100 (Routine)
Washington	United States	Record low maximum temperature	3.3 C (37.9 F)	16 of 100 (Routine)
Brantford	Canada	Record low minimum temperature	-7.2 C (19.0 F)	15 of 100 (Routine)
Stoney Creek	Canada	Record daily snowfall	1.3 cm (0.5 in)	15 of 100 (Routine)
Yarmouth	Canada	Record low minimum temperature	-5.0 C (23.0 F)	15 of 100 (Routine)
Cape May 2 NW	United States	Record low maximum temperature	3.3 C (37.9 F)	15 of 100 (Routine)
Belle Isle	Canada	Record low minimum temperature	-16.1 C (3.0 F)	13 of 100 (Routine)
Atlantic City Marina	United States	Record daily precipitation	21.8 mm (0.9 in)	12 of 100 (Routine)
Philadelphia City	United States	Record daily snowfall	2.5 cm (1.0 in)	12 of 100 (Routine)
Jacksonville Wb City	United States	Record low minimum temperature	5.6 C (42.1 F)	12 of 100 (Routine)
Gunnedah Pool	Australia	Record low maximum temperature	20.6 C (69.1 F)	11 of 100 (Routine)
Nurnberg	Germany	Record high minimum temperature	8.3 C (46.9 F)	9 of 100 (Routine)
Heinersreuth-Vollhof	Germany	Record high minimum temperature	7.3 C (45.1 F)	9 of 100 (Routine)
Sydney	Canada	Record low maximum temperature	-1.7 C (28.9 F)	8 of 100 (Routine)
Halmstad	Sweden	Record high maximum temperature	17.0 C (62.6 F)	8 of 100 (Routine)
Atlantic City Marina	United States	Record low maximum temperature	3.3 C (37.9 F)	7 of 100 (Routine)
Montgomery Wb City	United States	Record low maximum temperature	7.2 C (45.0 F)	5 of 100 (Routine)
Stratford	Canada	Record daily snowfall	2.5 cm (1.0 in)	4 of 100 (Routine)
London South	Canada	Record daily snowfall	3.8 cm (1.5 in)	3 of 100 (Routine)
Philadelphia City	United States	Record low maximum temperature	2.8 C (37.0 F)	3 of 100 (Routine)
Ny City Cntrl Park	United States	Record low maximum temperature	3.3 C (37.9 F)	3 of 100 (Routine)
Brantford	Canada	Record daily snowfall	3.8 cm (1.5 in)	2 of 100 (Routine)
Pointe Au Pere	Canada	Record low minimum temperature	-11.1 C (12.0 F)	2 of 100 (Routine)
Setauket Strong	United States	Record low maximum temperature	3.3 C (37.9 F)	2 of 100 (Routine)
Harrisburg - Coop	United States	Record low maximum temperature	1.1 C (34.0 F)	2 of 100 (Routine)
Baltimore Customs House	United States	Record low maximum temperature	2.2 C (36.0 F)	2 of 100 (Routine)
Lincoln UNIV Pwr Plt	United States	Record low minimum temperature	-3.9 C (25.0 F)	2 of 100 (Routine)
Nicosia	Cyprus	Record high maximum temperature	28.9 C (84.0 F)	1 of 100 (Routine)
Magdeburg	Germany	Record high minimum temperature	8.5 C (47.3 F)	1 of 100 (Routine)
Boras	Sweden	Record high minimum temperature	3.0 C (37.4 F)	1 of 100 (Routine)

Counts by Type and Timescale

43 records

Records set or tied on 11 April 1918 by type: Highest daily maximum 2, Lowest daily maximum 12, Highest daily minimum 6, Lowest daily minimum 8, Heaviest daily rainfall 5, Heaviest daily snowfall 10.

Records on 11 April 1918 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	12
Highest daily minimum	6
Lowest daily minimum	8
Heaviest daily rainfall	5
Heaviest daily snowfall	10
Deepest snow cover	0

Records on 11 April 1918 by timescale: all-time 0, monthly 1, daily 42.

How Much Records Were Beaten By

29 broken records

Margins by which the 29 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 64.0. Ties are not counted.

Top 20 by Significance

11 April 1918

Top 20 records on 11 April 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 April 1918	Chatham 2, CA	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	34 years	26 of 100 (Routine)
11 April 1918	Frankfurt/Main (Feldbergstr.), DE	daily rain	16.6 mm (0.7 in)	7.3 mm (0.29 in)	29 years	20 of 100 (Routine)
11 April 1918	Kunzelsau, DE	daily rain	20.2 mm (0.8 in)	7.7 mm (0.30 in)	19 years	20 of 100 (Routine)
11 April 1918	Ny City Cntrl Park, US	daily snowfall	1.0 cm (0.4 in)	1.0 cm (0.4 in)	48 years	20 of 100 (Routine)
11 April 1918	Zametchino, RU	daily rain	6.7 mm (0.26 in)	3.2 mm (0.13 in)	32 years	20 of 100 (Routine)
11 April 1918	Montgomery Wb City, US	daily low min	1.7 C (35.1 F)	3.9 C (7.0 F)	20 years	19 of 100 (Routine)
11 April 1918	Jacksonville Wb City, US	daily low max	15.6 C (60.1 F)	1.1 C (2.0 F)	40 years	18 of 100 (Routine)
11 April 1918	Ivanhoe (Wokabity), AU	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	45 years	17 of 100 (Routine)
11 April 1918	Gunnedah Pool, AU	daily low min	5.0 C (41.0 F)	1.1 C (2.0 F)	37 years	17 of 100 (Routine)
11 April 1918	Hamilton, CA	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	32 years	17 of 100 (Routine)
11 April 1918	Koebenhavn: Landbohojskolen-1, DK	daily high min	6.8 C (44.2 F)	0.3 C (0.5 F)	41 years	17 of 100 (Routine)
11 April 1918	Somerville 4 NW, US	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	38 years	17 of 100 (Routine)
11 April 1918	World Trade Ctr, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	32 years	17 of 100 (Routine)
11 April 1918	Kremsmuenster, AT	daily high min	7.8 C (46.0 F)	0.1 C (0.2 F)	40 years	16 of 100 (Routine)
11 April 1918	Washington, US	daily low max	3.3 C (37.9 F)	0.3 C (0.5 F)	35 years	16 of 100 (Routine)
11 April 1918	Brantford, CA	daily low min	-7.2 C (19.0 F)	0.5 C (0.9 F)	35 years	15 of 100 (Routine)
11 April 1918	Stoney Creek, CA	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	33 years	15 of 100 (Routine)
11 April 1918	Yarmouth, CA	daily low min	-5.0 C (23.0 F)	0.6 C (1.1 F)	32 years	15 of 100 (Routine)
11 April 1918	Cape May 2 NW, US	daily low max	3.3 C (37.9 F)	0.6 C (1.1 F)	35 years	15 of 100 (Routine)
11 April 1918	Belle Isle, CA	daily low min	-16.1 C (3.0 F)	0.5 C (0.9 F)	31 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

1800 to 1918

Records set or tied on this calendar date in each year from 1800 to 1918. 1918 had 43 records.

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

Records on 04-11 in each year
Year	Records
1800	1
1803	1
1808	1
1809	1
1812	3
1818	1
1831	1
1832	1
1834	1
1837	1
1845	1
1854	1
1857	1
1863	2
1865	2
1866	1
1868	1
1869	3
1871	1
1874	1
1876	2
1879	2
1880	2
1881	1
1882	2
1885	1
1886	1
1887	2
1888	4
1889	2
1890	2
1891	2
1892	3
1894	7
1895	5
1896	3
1898	7
1899	11
1900	6
1901	4
1902	6
1903	13
1904	12
1905	20
1906	19
1907	7
1908	12
1909	30
1910	19
1911	19
1912	47
1913	48
1914	38
1915	127
1916	64
1917	62
1918	43
1919	42
1920	73
1921	32
1922	140
1923	89
1924	169
1925	197
1926	198
1927	156
1928	220
1929	214
1930	761
1931	185
1932	497
1933	481
1934	246
1935	261
1936	175
1937	245
1938	289
1939	611
1940	932
1941	579
1942	301
1943	546
1944	626
1945	890
1946	383
1947	478
1948	921
1949	402
1950	322
1951	623
1952	502
1953	594
1954	392
1955	610
1956	420
1957	508
1958	473
1959	582
1960	469
1961	532
1962	384
1963	450
1964	255
1965	763
1966	599
1967	757
1968	663
1969	353
1970	522
1971	495
1972	792
1973	1,479
1974	982
1975	851
1976	478
1977	1,231
1978	854
1979	977
1980	399
1981	1,036
1982	1,132
1983	1,040
1984	623
1985	952
1986	1,062
1987	440
1988	1,162
1989	1,931
1990	1,347
1991	1,287
1992	978
1993	722
1994	952
1995	2,134
1996	1,182
1997	3,077
1998	916
1999	1,318
2000	667
2001	1,865
2002	568
2003	1,156
2004	888
2005	930
2006	666
2007	962
2008	1,373
2009	1,102
2010	623
2011	1,664
2012	806
2013	1,482
2014	633
2015	399
2016	534
2017	489
2018	795
2019	812
2020	625
2021	892
2022	1,179
2023	1,036
2024	782
2025	1,177
2026	604

Download the Data

Data for records on 1918-04-11: 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	22
10 to 20	4
20 to 30	2
30 to 40	0
40 to 50	0
50 to 60	0
60 to 70	1