Weather Records on 21 March 1918

43 weather records were set or tied worldwide on 21 March 1918. Highest significance: Santa Fe, US.

Key Facts for 21 March 1918

On 21 March 1918, 43 weather records were set or tied at long-record stations worldwide.
35 were record highs and 2 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 42 daily.
Santa Fe set a monthly record daily precipitation of 25.1 mm (1.0 in) on 21 March 1918.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 485 records.

Record Map

43 stations

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

Weather records on 21 March 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Santa Fe	United States	Record daily precipitation	25.1 mm (1.0 in)	50 of 100 (Notable)
Baltimore Customs House	United States	Record daily precipitation	43.4 mm (1.7 in)	32 of 100 (Routine)
Washington	United States	Record daily precipitation	54.6 mm (2.1 in)	31 of 100 (Routine)
Armagh	United Kingdom	Record high maximum temperature	17.7 C (63.9 F)	30 of 100 (Routine)
Oxford	United Kingdom	Record high maximum temperature	18.6 C (65.5 F)	30 of 100 (Routine)
Galway	Ireland	Record high maximum temperature	18.9 C (66.0 F)	27 of 100 (Routine)
Escanaba	United States	Record high maximum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Milwaukee Wb City	United States	Record high minimum temperature	10.0 C (50.0 F)	22 of 100 (Routine)
Wien	Austria	Record high minimum temperature	7.0 C (44.6 F)	18 of 100 (Routine)
Port Arthur	Canada	Record high minimum temperature	1.1 C (34.0 F)	17 of 100 (Routine)
Stratford	Canada	Record high maximum temperature	20.6 C (69.1 F)	17 of 100 (Routine)
Oakbank	Canada	Record daily precipitation	5.6 mm (0.22 in)	16 of 100 (Routine)
Toledo Blade	United States	Record high maximum temperature	24.4 C (75.9 F)	16 of 100 (Routine)
Port Stanley	Canada	Record high maximum temperature	13.3 C (55.9 F)	15 of 100 (Routine)
London South	Canada	Record high maximum temperature	22.8 C (73.0 F)	15 of 100 (Routine)
Toronto	Canada	Record high maximum temperature	15.0 C (59.0 F)	15 of 100 (Routine)
Madison Wb City	United States	Record high minimum temperature	6.7 C (44.1 F)	14 of 100 (Routine)
Storrs	United States	Record high maximum temperature	23.3 C (73.9 F)	13 of 100 (Routine)
Brantford	Canada	Record high maximum temperature	20.0 C (68.0 F)	12 of 100 (Routine)
Durham	United Kingdom	Record high maximum temperature	17.8 C (64.0 F)	12 of 100 (Routine)
Toledo Blade	United States	Record high minimum temperature	7.2 C (45.0 F)	12 of 100 (Routine)
Lucknow	Canada	Record high minimum temperature	1.7 C (35.1 F)	11 of 100 (Routine)
Woodstock	Canada	Record high maximum temperature	18.9 C (66.0 F)	11 of 100 (Routine)
Sheffield	United Kingdom	Record high maximum temperature	18.3 C (64.9 F)	11 of 100 (Routine)
Saint John	Canada	Record high maximum temperature	11.1 C (52.0 F)	10 of 100 (Routine)
Cet Central England	United Kingdom	Record high maximum temperature	16.4 C (61.5 F)	10 of 100 (Routine)
Gravenhurst	Canada	Record high maximum temperature	13.9 C (57.0 F)	9 of 100 (Routine)
Parry Sound	Canada	Record high maximum temperature	15.0 C (59.0 F)	9 of 100 (Routine)
Haliburton A	Canada	Record high maximum temperature	14.4 C (57.9 F)	8 of 100 (Routine)
Kiev	Ukraine	Record high minimum temperature	3.3 C (37.9 F)	8 of 100 (Routine)
Tashkent	Uzbekistan	Record low minimum temperature	-8.3 C (17.1 F)	8 of 100 (Routine)
Irkutsk	Russia	Record high minimum temperature	-3.3 C (26.1 F)	7 of 100 (Routine)
Lady Frere (Tnk)	South Africa	Record daily precipitation	23.1 mm (0.9 in)	7 of 100 (Routine)
Lindsay	Canada	Record high maximum temperature	15.0 C (59.0 F)	6 of 100 (Routine)
Karesuando	Sweden	Record daily precipitation	0.5 mm (0.02 in)	5 of 100 (Routine)
Alma	United States	Record high maximum temperature	20.6 C (69.1 F)	5 of 100 (Routine)
State College	United States	Record high maximum temperature	21.1 C (70.0 F)	4 of 100 (Routine)
Welland	Canada	Record high maximum temperature	17.8 C (64.0 F)	2 of 100 (Routine)
Nicosia	Cyprus	Record low minimum temperature	1.7 C (35.1 F)	2 of 100 (Routine)
Buffalo	United States	Record high minimum temperature	4.4 C (39.9 F)	2 of 100 (Routine)
World Trade Ctr	United States	Record high maximum temperature	18.9 C (66.0 F)	2 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high minimum temperature	5.0 C (41.0 F)	2 of 100 (Routine)
La Crosse Wb City	United States	Record high minimum temperature	5.6 C (42.1 F)	2 of 100 (Routine)

Counts by Type and Timescale

43 records

Records set or tied on 21 March 1918 by type: Highest daily maximum 24, Highest daily minimum 11, Lowest daily minimum 2, Heaviest daily rainfall 6.

Records on 21 March 1918 by type
Record type	Records
Highest daily maximum	24
Lowest daily maximum	0
Highest daily minimum	11
Lowest daily minimum	2
Heaviest daily rainfall	6
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 March 1918 by timescale: all-time 0, monthly 1, daily 42.

How Much Records Were Beaten By

37 broken records

Margins by which the 37 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 23.6. Ties are not counted.

Top 20 by Significance

21 March 1918

Top 20 records on 21 March 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 1918	Santa Fe, US	monthly rain	25.1 mm (1.0 in)	4.8 mm (0.19 in)	67 years	50 of 100 (Notable)
21 March 1918	Baltimore Customs House, US	daily rain	43.4 mm (1.7 in)	23.6 mm (0.9 in)	16 years	32 of 100 (Routine)
21 March 1918	Washington, US	daily rain	54.6 mm (2.1 in)	21.6 mm (0.9 in)	15 years	31 of 100 (Routine)
21 March 1918	Armagh, GB	daily high max	17.7 C (63.9 F)	2.0 C (3.6 F)	59 years	30 of 100 (Routine)
21 March 1918	Oxford, GB	daily high max	18.6 C (65.5 F)	0.4 C (0.7 F)	65 years	30 of 100 (Routine)
21 March 1918	Galway, IE	daily high max	18.9 C (66.0 F)	2.8 C (5.0 F)	37 years	27 of 100 (Routine)
21 March 1918	Escanaba, US	daily high max	17.8 C (64.0 F)	7.2 C (13.0 F)	28 years	25 of 100 (Routine)
21 March 1918	Milwaukee Wb City, US	daily high min	10.0 C (50.0 F)	6.1 C (11.0 F)	23 years	22 of 100 (Routine)
21 March 1918	Wien, AT	daily high min	7.0 C (44.6 F)	0.1 C (0.2 F)	40 years	18 of 100 (Routine)
21 March 1918	Port Arthur, CA	daily high min	1.1 C (34.0 F)	1.7 C (3.1 F)	39 years	17 of 100 (Routine)
21 March 1918	Stratford, CA	daily high max	20.6 C (69.1 F)	3.4 C (6.1 F)	23 years	17 of 100 (Routine)
21 March 1918	Oakbank, CA	daily rain	5.6 mm (0.22 in)	3.1 mm (0.12 in)	26 years	16 of 100 (Routine)
21 March 1918	Toledo Blade, US	daily high max	24.4 C (75.9 F)	3.8 C (6.8 F)	23 years	16 of 100 (Routine)
21 March 1918	Port Stanley, CA	daily high max	13.3 C (55.9 F)	2.2 C (4.0 F)	23 years	15 of 100 (Routine)
21 March 1918	London South, CA	daily high max	22.8 C (73.0 F)	3.4 C (6.1 F)	23 years	15 of 100 (Routine)
21 March 1918	Toronto, CA	daily high max	15.0 C (59.0 F)	2.2 C (4.0 F)	15 years	15 of 100 (Routine)
21 March 1918	Madison Wb City, US	daily high min	6.7 C (44.1 F)	1.7 C (3.1 F)	23 years	14 of 100 (Routine)
21 March 1918	Storrs, US	daily high max	23.3 C (73.9 F)	5.5 C (9.9 F)	4 years	13 of 100 (Routine)
21 March 1918	Brantford, CA	daily high max	20.0 C (68.0 F)	1.1 C (2.0 F)	23 years	12 of 100 (Routine)
21 March 1918	Durham, GB	daily high max	17.8 C (64.0 F)	0.5 C (0.9 F)	24 years	12 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

1797 to 1918

Records set or tied on this calendar date in each year from 1797 to 1918. 1918 had 43 records.

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

Records on 03-21 in each year
Year	Records
1797	2
1805	1
1806	1
1822	1
1830	1
1836	1
1837	1
1845	1
1846	1
1850	1
1852	2
1857	1
1865	7
1874	1
1877	1
1880	1
1881	1
1883	2
1884	1
1885	5
1886	2
1888	1
1890	3
1892	1
1893	1
1894	1
1895	1
1896	2
1897	2
1898	3
1899	4
1900	4
1901	9
1902	18
1903	23
1904	17
1905	6
1906	3
1907	14
1908	3
1909	11
1910	10
1911	10
1912	36
1913	97
1914	71
1915	27
1916	44
1917	43
1918	43
1919	29
1920	90
1921	96
1922	50
1923	72
1924	96
1925	141
1926	282
1927	179
1928	293
1929	104
1930	99
1931	638
1932	305
1933	235
1934	114
1935	675
1936	225
1937	172
1938	783
1939	280
1940	366
1941	311
1942	330
1943	217
1944	556
1945	294
1946	570
1947	192
1948	948
1949	330
1950	398
1951	779
1952	689
1953	342
1954	211
1955	1,124
1956	686
1957	373
1958	619
1959	230
1960	892
1961	268
1962	548
1963	298
1964	333
1965	1,961
1966	464
1967	487
1968	798
1969	219
1970	612
1971	358
1972	519
1973	385
1974	1,097
1975	751
1976	710
1977	376
1978	838
1979	656
1980	775
1981	676
1982	850
1983	1,673
1984	835
1985	503
1986	1,170
1987	948
1988	1,155
1989	1,396
1990	1,380
1991	1,446
1992	877
1993	687
1994	684
1995	1,141
1996	1,119
1997	1,670
1998	935
1999	1,044
2000	802
2001	1,342
2002	1,593
2003	1,073
2004	1,511
2005	649
2006	1,417
2007	1,220
2008	734
2009	558
2010	1,134
2011	1,451
2012	2,854
2013	728
2014	640
2015	568
2016	553
2017	1,117
2018	809
2019	649
2020	445
2021	489
2022	615
2023	815
2024	432
2025	845
2026	2,615

Download the Data

Data for records on 1918-03-21: 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	32
5 to 10	3
10 to 15	0
15 to 20	0
20 to 25	2