Weather Records on 21 April 1918

84 weather records were set or tied worldwide on 21 April 1918. Highest significance: Enngonia (Morton Plains), AU.

Key Facts for 21 April 1918

On 21 April 1918, 84 weather records were set or tied at long-record stations worldwide.
11 were record highs and 15 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 82 daily.
Enngonia (Morton Plains) set a monthly record daily precipitation of 85.3 mm (3.4 in) on 21 April 1918.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 465 records.

Record Map

84 stations

84 station records on 21 April 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Enngonia (Morton Plains)	Australia	Record daily precipitation	85.3 mm (3.4 in)	39 of 100 (Notable)
Blue Hill Coop	United States	Record daily precipitation	41.1 mm (1.6 in)	37 of 100 (Notable)
Paterson	United States	Record daily precipitation	36.8 mm (1.4 in)	35 of 100 (Notable)
Enngonia (Belalie)	Australia	Record daily precipitation	64.3 mm (2.5 in)	32 of 100 (Routine)
Weldon	United States	Record daily precipitation	32.0 mm (1.3 in)	32 of 100 (Routine)
Tilpa (Warloo)	Australia	Record daily precipitation	25.4 mm (1.0 in)	30 of 100 (Routine)
Goorimpa	Australia	Record daily precipitation	33.0 mm (1.3 in)	30 of 100 (Routine)
Moorestown 4 E	United States	Record daily precipitation	31.5 mm (1.2 in)	30 of 100 (Routine)
Ny City Cntrl Park	United States	Record daily precipitation	45.7 mm (1.8 in)	30 of 100 (Routine)
Baltimore Customs House	United States	Record daily precipitation	35.8 mm (1.4 in)	29 of 100 (Routine)
Wangamana	Australia	Record daily precipitation	25.4 mm (1.0 in)	26 of 100 (Routine)
Atlantic City Marina	United States	Record daily precipitation	25.4 mm (1.0 in)	26 of 100 (Routine)
Ledknapper Tank	Australia	Record daily precipitation	31.8 mm (1.3 in)	23 of 100 (Routine)
Hingham (1)	United States	Record daily precipitation	45.2 mm (1.8 in)	23 of 100 (Routine)
Yantabulla (Brindingabba)	Australia	Record daily precipitation	37.3 mm (1.5 in)	22 of 100 (Routine)
Camden 3 W	United States	Record daily precipitation	39.4 mm (1.6 in)	22 of 100 (Routine)
Tilpa (Tongo Road)	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Cherdyn'	Russia	Record daily precipitation	6.6 mm (0.26 in)	20 of 100 (Routine)
Curnomona (Curnamona)	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Jena Sternwarte	Germany	Record low maximum temperature	4.9 C (40.8 F)	20 of 100 (Routine)
Milparinka Hotel	Australia	Record daily precipitation	13.0 mm (0.5 in)	19 of 100 (Routine)
Wollongong Post Office	Australia	Record daily precipitation	40.6 mm (1.6 in)	19 of 100 (Routine)
Vineland	United States	Record daily precipitation	27.7 mm (1.1 in)	19 of 100 (Routine)
Karlsruhe	Germany	Record low maximum temperature	6.4 C (43.5 F)	18 of 100 (Routine)
Madison Wb City	United States	Record low maximum temperature	1.7 C (35.1 F)	18 of 100 (Routine)
Arrowie	Australia	Record daily precipitation	28.2 mm (1.1 in)	17 of 100 (Routine)
Blackall Township	Australia	Record daily precipitation	25.7 mm (1.0 in)	17 of 100 (Routine)
Taree (Radio Station 2Re)	Australia	Record daily precipitation	37.3 mm (1.5 in)	17 of 100 (Routine)
Bamberg	Germany	Record low maximum temperature	5.4 C (41.7 F)	17 of 100 (Routine)
Philadelphia City	United States	Record daily precipitation	31.0 mm (1.2 in)	17 of 100 (Routine)
Dubuque River	United States	Record daily snowfall	4.6 cm (1.8 in)	17 of 100 (Routine)
Karlshamn	Sweden	Record high minimum temperature	7.0 C (44.6 F)	16 of 100 (Routine)
Wanaaring Post Office	Australia	Record daily precipitation	7.6 mm (0.30 in)	15 of 100 (Routine)
Laurieton (Elouera St)	Australia	Record daily precipitation	35.8 mm (1.4 in)	15 of 100 (Routine)
Jena Sternwarte	Germany	Record snow depth	3.0 cm (1.2 in)	15 of 100 (Routine)
Little Rock St Capitol	United States	Record low minimum temperature	4.4 C (39.9 F)	15 of 100 (Routine)
Collerina (Corrella)	Australia	Record daily precipitation	34.3 mm (1.4 in)	14 of 100 (Routine)
Heinersreuth-Vollhof	Germany	Record low maximum temperature	4.9 C (40.8 F)	14 of 100 (Routine)
Visby_Flygplats	Sweden	Record high minimum temperature	8.1 C (46.6 F)	14 of 100 (Routine)
Sheffield	United Kingdom	Record low minimum temperature	-0.6 C (30.9 F)	14 of 100 (Routine)
Leominster	United States	Record daily precipitation	23.9 mm (0.9 in)	14 of 100 (Routine)
Dubuque River	United States	Record snow depth	2.5 cm (1.0 in)	14 of 100 (Routine)
Cunnamulla Post Office	Australia	Record daily precipitation	37.3 mm (1.5 in)	13 of 100 (Routine)
Magdeburg	Germany	Record daily precipitation	5.2 mm (0.20 in)	13 of 100 (Routine)
Lake Cochituate	United States	Record daily precipitation	32.3 mm (1.3 in)	13 of 100 (Routine)
Sacramento 5 ESE	United States	Record high maximum temperature	29.4 C (84.9 F)	13 of 100 (Routine)
Charleville Post Office	Australia	Record daily precipitation	24.1 mm (0.9 in)	12 of 100 (Routine)
Eulo Post Office	Australia	Record daily precipitation	24.9 mm (1.0 in)	12 of 100 (Routine)
Fort Bourke	Australia	Record daily precipitation	17.3 mm (0.7 in)	12 of 100 (Routine)
Blinman (Wirrealpa)	Australia	Record daily precipitation	27.4 mm (1.1 in)	11 of 100 (Routine)
Penshurst (Gresford)	Australia	Record daily precipitation	15.7 mm (0.6 in)	11 of 100 (Routine)
Moose Factory	Canada	Record high maximum temperature	15.0 C (59.0 F)	11 of 100 (Routine)
Visby_Flygplats	Sweden	Record high maximum temperature	16.1 C (61.0 F)	11 of 100 (Routine)
Hanover	United States	Record daily precipitation	13.2 mm (0.5 in)	11 of 100 (Routine)
Cape May 2 NW	United States	Record daily precipitation	12.7 mm (0.5 in)	11 of 100 (Routine)
State College	United States	Record daily precipitation	15.7 mm (0.6 in)	11 of 100 (Routine)
Hawker (Holowilena)	Australia	Record daily precipitation	11.9 mm (0.5 in)	10 of 100 (Routine)
Woolerina	Australia	Record daily precipitation	27.7 mm (1.1 in)	10 of 100 (Routine)
Kingston Queens U	Canada	Record daily precipitation	14.7 mm (0.6 in)	10 of 100 (Routine)
Reading Wb City	United States	Record daily precipitation	34.5 mm (1.4 in)	10 of 100 (Routine)

Counts by Type and Timescale

84 records

Records set or tied on 21 April 1918 by type: Highest daily maximum 3, Lowest daily maximum 12, Highest daily minimum 8, Lowest daily minimum 3, Heaviest daily rainfall 55, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 21 April 1918 by type
Record type	Records
Highest daily maximum	3
Lowest daily maximum	12
Highest daily minimum	8
Lowest daily minimum	3
Heaviest daily rainfall	55
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 21 April 1918 by timescale: all-time 0, monthly 2, daily 82.

How Much Records Were Beaten By

78 broken records

Margins by which the 78 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 30.7. Ties are not counted.

Top 20 by Significance

21 April 1918

Top 20 records on 21 April 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1918	Enngonia (Morton Plains), AU	monthly rain	85.3 mm (3.4 in)	30.7 mm (1.2 in)	8 years	39 of 100 (Notable)
21 April 1918	Blue Hill Coop, US	daily rain	41.1 mm (1.6 in)	26.9 mm (1.1 in)	24 years	37 of 100 (Notable)
21 April 1918	Paterson, US	daily rain	36.8 mm (1.4 in)	20.8 mm (0.8 in)	48 years	35 of 100 (Notable)
21 April 1918	Enngonia (Belalie), AU	monthly rain	64.3 mm (2.5 in)	13.5 mm (0.5 in)	29 years	32 of 100 (Routine)
21 April 1918	Weldon, US	daily rain	32.0 mm (1.3 in)	24.4 mm (1.0 in)	42 years	32 of 100 (Routine)
21 April 1918	Tilpa (Warloo), AU	daily rain	25.4 mm (1.0 in)	21.8 mm (0.9 in)	23 years	30 of 100 (Routine)
21 April 1918	Goorimpa, AU	daily rain	33.0 mm (1.3 in)	16.0 mm (0.6 in)	37 years	30 of 100 (Routine)
21 April 1918	Moorestown 4 E, US	daily rain	31.5 mm (1.2 in)	9.9 mm (0.39 in)	52 years	30 of 100 (Routine)
21 April 1918	Ny City Cntrl Park, US	daily rain	45.7 mm (1.8 in)	21.1 mm (0.8 in)	16 years	30 of 100 (Routine)
21 April 1918	Baltimore Customs House, US	daily rain	35.8 mm (1.4 in)	20.1 mm (0.8 in)	25 years	29 of 100 (Routine)
21 April 1918	Wangamana, AU	daily rain	25.4 mm (1.0 in)	16.8 mm (0.7 in)	4 years	26 of 100 (Routine)
21 April 1918	Atlantic City Marina, US	daily rain	25.4 mm (1.0 in)	14.0 mm (0.6 in)	25 years	26 of 100 (Routine)
21 April 1918	Ledknapper Tank, AU	daily rain	31.8 mm (1.3 in)	26.7 mm (1.1 in)	4 years	23 of 100 (Routine)
21 April 1918	Hingham (1), US	daily rain	45.2 mm (1.8 in)	23.4 mm (0.9 in)	24 years	23 of 100 (Routine)
21 April 1918	Yantabulla (Brindingabba), AU	daily rain	37.3 mm (1.5 in)	23.3 mm (0.9 in)	4 years	22 of 100 (Routine)
21 April 1918	Camden 3 W, US	daily rain	39.4 mm (1.6 in)	13.7 mm (0.5 in)	17 years	22 of 100 (Routine)
21 April 1918	Tilpa (Tongo Road), AU	daily rain	14.5 mm (0.6 in)	14.5 mm (0.6 in)	34 years	20 of 100 (Routine)
21 April 1918	Cherdyn', RU	daily rain	6.6 mm (0.26 in)	4.6 mm (0.18 in)	27 years	20 of 100 (Routine)
21 April 1918	Curnomona (Curnamona), AU	daily rain	8.9 mm (0.35 in)	8.9 mm (0.35 in)	36 years	20 of 100 (Routine)
21 April 1918	Jena Sternwarte, DE	daily low max	4.9 C (40.8 F)	0.6 C (1.1 F)	33 years	20 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

1793 to 1918

Records set or tied on this calendar date in each year from 1793 to 1918. 1918 had 84 records.

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

Records on 04-21 in each year
Year	Records
1793	1
1814	1
1820	1
1838	1
1849	2
1851	1
1852	3
1854	1
1858	3
1861	2
1865	3
1866	1
1868	1
1870	1
1875	4
1876	2
1877	1
1879	3
1880	1
1881	1
1882	1
1884	1
1885	2
1888	1
1890	1
1891	1
1892	1
1893	2
1894	4
1895	1
1897	1
1898	2
1899	2
1900	7
1901	17
1902	7
1903	3
1904	10
1905	18
1906	5
1907	17
1908	25
1909	20
1910	33
1911	9
1912	22
1913	14
1914	220
1915	24
1916	64
1917	48
1918	84
1919	31
1920	85
1921	59
1922	70
1923	223
1924	119
1925	295
1926	148
1927	284
1928	269
1929	193
1930	127
1931	358
1932	304
1933	201
1934	497
1935	266
1936	277
1937	416
1938	295
1939	110
1940	462
1941	306
1942	285
1943	481
1944	261
1945	367
1946	448
1947	459
1948	365
1949	448
1950	529
1951	884
1952	665
1953	640
1954	527
1955	607
1956	497
1957	824
1958	329
1959	505
1960	889
1961	647
1962	319
1963	778
1964	1,125
1965	658
1966	756
1967	903
1968	655
1969	388
1970	728
1971	546
1972	593
1973	1,163
1974	528
1975	360
1976	452
1977	854
1978	735
1979	449
1980	1,934
1981	944
1982	1,075
1983	1,366
1984	1,231
1985	1,245
1986	977
1987	1,290
1988	898
1989	1,557
1990	1,463
1991	1,291
1992	1,763
1993	847
1994	859
1995	1,476
1996	788
1997	964
1998	876
1999	752
2000	921
2001	967
2002	1,312
2003	607
2004	586
2005	693
2006	761
2007	480
2008	1,327
2009	983
2010	805
2011	1,053
2012	687
2013	1,015
2014	393
2015	621
2016	587
2017	797
2018	862
2019	731
2020	397
2021	1,608
2022	433
2023	887
2024	754
2025	506
2026	853

Download the Data

Data for records on 1918-04-21: 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 2026-10-15 (15 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	38
5 to 10	12
10 to 15	12
15 to 20	3
20 to 25	8
25 to 30	3
30 to 35	2