Weather Records on 20 April 1918

42 weather records were set or tied worldwide on 20 April 1918. Highest significance: Oxford, GB.

Key Facts for 20 April 1918

On 20 April 1918, 42 weather records were set or tied at long-record stations worldwide.
5 were record highs and 18 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 41 daily.
Oxford set a daily record low maximum temperature of 3.6 C (38.5 F) on 20 April 1918.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 465 records.

Record Map

42 stations

42 station records on 20 April 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Oxford	United Kingdom	Record low maximum temperature	3.6 C (38.5 F)	45 of 100 (Notable)
Uccle	Belgium	Record low minimum temperature	-2.7 C (27.1 F)	28 of 100 (Routine)
Jena Sternwarte	Germany	Record low maximum temperature	3.2 C (37.8 F)	26 of 100 (Routine)
Wangamana	Australia	Record daily precipitation	28.4 mm (1.1 in)	22 of 100 (Routine)
Johnsonville	United States	Record daily precipitation	54.4 mm (2.1 in)	22 of 100 (Routine)
Vytegra	Russia	Record daily precipitation	12.0 mm (0.5 in)	20 of 100 (Routine)
Wanaaring Station	Australia	Record daily precipitation	7.1 mm (0.28 in)	20 of 100 (Routine)
Berlin-Dahlem	Germany	Record low maximum temperature	4.4 C (39.9 F)	20 of 100 (Routine)
Plauen	Germany	Record snow depth	6.0 cm (2.4 in)	19 of 100 (Routine)
Wrixum/Fohr	Germany	Record daily precipitation	11.7 mm (0.5 in)	19 of 100 (Routine)
Houston Wb City	United States	Record low maximum temperature	18.9 C (66.0 F)	19 of 100 (Routine)
Magdeburg	Germany	Record low maximum temperature	3.3 C (37.9 F)	17 of 100 (Routine)
Leipzig-Holzhausen	Germany	Record daily precipitation	16.4 mm (0.6 in)	17 of 100 (Routine)
Quinyambie	Australia	Record daily precipitation	7.6 mm (0.30 in)	16 of 100 (Routine)
Cet Central England	United Kingdom	Record low maximum temperature	6.6 C (43.9 F)	16 of 100 (Routine)
Wilmington Wb City	United States	Record daily precipitation	33.0 mm (1.3 in)	16 of 100 (Routine)
Dubuque River	United States	Record daily snowfall	3.0 cm (1.2 in)	16 of 100 (Routine)
Louth (Bloxham Street)	Australia	Record daily precipitation	2.0 mm (0.08 in)	15 of 100 (Routine)
Nocoleche	Australia	Record daily precipitation	3.8 mm (0.15 in)	14 of 100 (Routine)
St John's	Canada	Record low minimum temperature	-6.7 C (19.9 F)	14 of 100 (Routine)
Bamberg	Germany	Record low maximum temperature	4.8 C (40.6 F)	14 of 100 (Routine)
Gunnedah Pool	Australia	Record low maximum temperature	20.0 C (68.0 F)	13 of 100 (Routine)
Prince Albert	Canada	Record high maximum temperature	22.2 C (72.0 F)	13 of 100 (Routine)
Sydney	Canada	Record low minimum temperature	-7.2 C (19.0 F)	13 of 100 (Routine)
Mahackala	Russia	Record high minimum temperature	10.9 C (51.6 F)	13 of 100 (Routine)
Dubuque River	United States	Record low maximum temperature	3.9 C (39.0 F)	13 of 100 (Routine)
Nordby (Fano)	Denmark	Record daily precipitation	9.8 mm (0.39 in)	12 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record low minimum temperature	-9.4 C (15.1 F)	11 of 100 (Routine)
Renfrew	Canada	Record low minimum temperature	-7.2 C (19.0 F)	10 of 100 (Routine)
Goldberg	Germany	Record daily precipitation	5.8 mm (0.23 in)	10 of 100 (Routine)
Munchen-Nymphenburg	Germany	Record low maximum temperature	3.9 C (39.0 F)	9 of 100 (Routine)
Jena Sternwarte	Germany	Record snow depth	4.0 cm (1.6 in)	8 of 100 (Routine)
Hohenpeissenberg	Germany	Record low maximum temperature	0.8 C (33.4 F)	8 of 100 (Routine)
Belle Isle	Canada	Record low minimum temperature	-12.8 C (9.0 F)	7 of 100 (Routine)
Tweed Heads Golf Club	Australia	Record daily precipitation	45.7 mm (1.8 in)	6 of 100 (Routine)
Milton Post Office	Australia	Record daily precipitation	21.6 mm (0.9 in)	6 of 100 (Routine)
Nowra Council Offices	Australia	Record daily precipitation	16.8 mm (0.7 in)	5 of 100 (Routine)
Calgary Int'l A	Canada	Record high maximum temperature	24.4 C (75.9 F)	5 of 100 (Routine)
St. Petersburg	Russia	Record high minimum temperature	8.3 C (46.9 F)	4 of 100 (Routine)
Wilmington Wb City	United States	Record high minimum temperature	18.9 C (66.0 F)	4 of 100 (Routine)
Atlantic City Marina	United States	Record low maximum temperature	6.1 C (43.0 F)	2 of 100 (Routine)
Chattanooga Wb City	United States	Record daily precipitation	21.3 mm (0.8 in)	2 of 100 (Routine)

Counts by Type and Timescale

42 records

Records set or tied on 20 April 1918 by type: Highest daily maximum 2, Lowest daily maximum 12, Highest daily minimum 3, Lowest daily minimum 6, Heaviest daily rainfall 16, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 20 April 1918 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	12
Highest daily minimum	3
Lowest daily minimum	6
Heaviest daily rainfall	16
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 20 April 1918 by timescale: all-time 0, monthly 1, daily 41.

How Much Records Were Beaten By

39 broken records

Margins by which the 39 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 60.0. Ties are not counted.

Top 20 by Significance

20 April 1918

Top 20 records on 20 April 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 1918	Oxford, GB	daily low max	3.6 C (38.5 F)	2.0 C (3.6 F)	102 years	45 of 100 (Notable)
20 April 1918	Uccle, BE	daily low min	-2.7 C (27.1 F)	0.6 C (1.1 F)	65 years	28 of 100 (Routine)
20 April 1918	Jena Sternwarte, DE	daily low max	3.2 C (37.8 F)	0.4 C (0.7 F)	57 years	26 of 100 (Routine)
20 April 1918	Wangamana, AU	monthly rain	28.4 mm (1.1 in)	0.5 mm (0.02 in)	33 years	22 of 100 (Routine)
20 April 1918	Johnsonville, US	daily rain	54.4 mm (2.1 in)	19.1 mm (0.8 in)	17 years	22 of 100 (Routine)
20 April 1918	Vytegra, RU	daily rain	12.0 mm (0.5 in)	4.1 mm (0.16 in)	28 years	20 of 100 (Routine)
20 April 1918	Wanaaring Station, AU	daily rain	7.1 mm (0.28 in)	7.1 mm (0.28 in)	36 years	20 of 100 (Routine)
20 April 1918	Berlin-Dahlem, DE	daily low max	4.4 C (39.9 F)	2.1 C (3.8 F)	40 years	20 of 100 (Routine)
20 April 1918	Plauen, DE	daily snow depth	6.0 cm (2.4 in)	6.0 cm (2.4 in)	34 years	19 of 100 (Routine)
20 April 1918	Wrixum/Fohr, DE	daily rain	11.7 mm (0.5 in)	4.6 mm (0.18 in)	9 years	19 of 100 (Routine)
20 April 1918	Houston Wb City, US	daily low max	18.9 C (66.0 F)	2.2 C (4.0 F)	33 years	19 of 100 (Routine)
20 April 1918	Magdeburg, DE	daily low max	3.3 C (37.9 F)	4.1 C (7.4 F)	21 years	17 of 100 (Routine)
20 April 1918	Leipzig-Holzhausen, DE	daily rain	16.4 mm (0.6 in)	4.6 mm (0.18 in)	8 years	17 of 100 (Routine)
20 April 1918	Quinyambie, AU	daily rain	7.6 mm (0.30 in)	6.6 mm (0.26 in)	23 years	16 of 100 (Routine)
20 April 1918	Cet Central England, GB	daily low max	6.6 C (43.9 F)	0.9 C (1.6 F)	36 years	16 of 100 (Routine)
20 April 1918	Wilmington Wb City, US	daily rain	33.0 mm (1.3 in)	1.5 mm (0.06 in)	37 years	16 of 100 (Routine)
20 April 1918	Dubuque River, US	daily snowfall	3.0 cm (1.2 in)	1.7 cm (0.7 in)	24 years	16 of 100 (Routine)
20 April 1918	Louth (Bloxham Street), AU	daily rain	2.0 mm (0.08 in)	2.0 mm (0.08 in)	36 years	15 of 100 (Routine)
20 April 1918	Nocoleche, AU	daily rain	3.8 mm (0.15 in)	3.3 mm (0.13 in)	26 years	14 of 100 (Routine)
20 April 1918	St John's, CA	daily low min	-6.7 C (19.9 F)	0.6 C (1.1 F)	31 years	14 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

1807 to 1918

Records set or tied on this calendar date in each year from 1807 to 1918. 1918 had 42 records.

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

Records on 04-20 in each year
Year	Records
1807	3
1817	1
1838	1
1849	2
1851	1
1852	4
1854	1
1858	1
1860	1
1864	1
1865	3
1868	1
1869	1
1870	1
1872	1
1874	3
1875	4
1876	1
1878	2
1880	2
1881	2
1884	1
1885	1
1886	2
1889	1
1891	2
1892	1
1893	6
1894	8
1895	7
1896	3
1897	6
1898	1
1899	1
1901	8
1902	3
1903	14
1904	31
1905	9
1906	12
1907	18
1908	14
1909	22
1910	25
1911	18
1912	12
1913	19
1914	46
1915	45
1916	19
1917	33
1918	42
1919	17
1920	49
1921	27
1922	40
1923	157
1924	113
1925	169
1926	310
1927	442
1928	212
1929	182
1930	87
1931	255
1932	166
1933	279
1934	384
1935	384
1936	311
1937	427
1938	339
1939	158
1940	519
1941	558
1942	223
1943	670
1944	304
1945	391
1946	395
1947	308
1948	493
1949	477
1950	329
1951	690
1952	552
1953	1,071
1954	377
1955	623
1956	384
1957	730
1958	327
1959	563
1960	472
1961	1,078
1962	487
1963	595
1964	749
1965	724
1966	1,174
1967	864
1968	975
1969	382
1970	948
1971	765
1972	531
1973	982
1974	673
1975	344
1976	661
1977	693
1978	800
1979	495
1980	1,539
1981	706
1982	906
1983	1,844
1984	922
1985	1,140
1986	770
1987	1,447
1988	1,144
1989	1,187
1990	1,495
1991	1,075
1992	1,009
1993	772
1994	756
1995	1,351
1996	970
1997	833
1998	1,490
1999	674
2000	931
2001	752
2002	1,081
2003	758
2004	567
2005	707
2006	859
2007	582
2008	1,110
2009	845
2010	693
2011	1,477
2012	726
2013	1,520
2014	384
2015	702
2016	650
2017	734
2018	1,309
2019	1,019
2020	449
2021	1,215
2022	596
2023	828
2024	673
2025	836
2026	533

Download the Data

Data for records on 1918-04-20: 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	35
10 to 20	3
20 to 30	0
30 to 40	0
40 to 50	0
50 to 60	1