Weather Records on 21 March 1921

96 weather records were set or tied worldwide on 21 March 1921. Highest significance: Fraserburg, ZA.

Key Facts for 21 March 1921

On 21 March 1921, 96 weather records were set or tied at long-record stations worldwide.
72 were record highs and 0 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 20 monthly and 76 daily.
Fraserburg set a daily record precipitation of 38.4 mm (1.5 in) on 21 March 1921.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 485 records.

Record Map

96 stations

96 station records on 21 March 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 March 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fraserburg	South Africa	Record daily precipitation	38.4 mm (1.5 in)	42 of 100 (Notable)
Washington	United States	Record high maximum temperature	31.7 C (89.1 F)	26 of 100 (Routine)
Whitehead	Canada	Record daily snowfall	38.1 cm (15.0 in)	25 of 100 (Routine)
Lake Cochituate	United States	Record high minimum temperature	15.6 C (60.1 F)	24 of 100 (Routine)
Roodebloem	South Africa	Record daily precipitation	28.4 mm (1.1 in)	23 of 100 (Routine)
Ny City Cntrl Park	United States	Record high maximum temperature	28.9 C (84.0 F)	23 of 100 (Routine)
Renfrew	Canada	Record high minimum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high maximum temperature	11.7 C (53.1 F)	22 of 100 (Routine)
Concord	United States	Record high maximum temperature	26.1 C (79.0 F)	21 of 100 (Routine)
Atlantic City Marina	United States	Record high maximum temperature	22.2 C (72.0 F)	21 of 100 (Routine)
Barrie	Canada	Record high maximum temperature	17.8 C (64.0 F)	20 of 100 (Routine)
Portland	United States	Record high maximum temperature	26.1 C (79.0 F)	20 of 100 (Routine)
Lowell	United States	Record high minimum temperature	15.0 C (59.0 F)	20 of 100 (Routine)
Cape May 2 NW	United States	Record high maximum temperature	23.9 C (75.0 F)	20 of 100 (Routine)
World Trade Ctr	United States	Record high maximum temperature	26.7 C (80.1 F)	20 of 100 (Routine)
Setauket Strong	United States	Record high maximum temperature	26.7 C (80.1 F)	20 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	31.1 C (88.0 F)	20 of 100 (Routine)
Windsor Riverside	Canada	Record high minimum temperature	8.9 C (48.0 F)	19 of 100 (Routine)
Colesberg (Tnk)	South Africa	Record daily precipitation	25.4 mm (1.0 in)	19 of 100 (Routine)
Lake Cochituate	United States	Record high maximum temperature	28.9 C (84.0 F)	19 of 100 (Routine)
Middletown 4 W	United States	Record high maximum temperature	26.7 C (80.1 F)	18 of 100 (Routine)
Plymouth	United States	Record high maximum temperature	23.3 C (73.9 F)	18 of 100 (Routine)
Whitehead	Canada	Record daily precipitation	38.1 mm (1.5 in)	17 of 100 (Routine)
Britstown (Pol)	South Africa	Record daily precipitation	21.6 mm (0.9 in)	17 of 100 (Routine)
Vineland	United States	Record high minimum temperature	16.1 C (61.0 F)	17 of 100 (Routine)
Southampton	Canada	Record high maximum temperature	19.4 C (66.9 F)	16 of 100 (Routine)
Blue Hill Coop	United States	Record high maximum temperature	27.2 C (81.0 F)	16 of 100 (Routine)
Ferrara	Italy	Record daily precipitation	26.2 mm (1.0 in)	15 of 100 (Routine)
Bakensrug	South Africa	Record daily precipitation	16.8 mm (0.7 in)	15 of 100 (Routine)
Vineland	United States	Record high maximum temperature	29.4 C (84.9 F)	15 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high maximum temperature	21.1 C (70.0 F)	15 of 100 (Routine)
Welland	Canada	Record high minimum temperature	3.9 C (39.0 F)	14 of 100 (Routine)
Alton	Canada	Record daily precipitation	13.5 mm (0.5 in)	14 of 100 (Routine)
Setauket Strong	United States	Record high minimum temperature	12.2 C (54.0 F)	14 of 100 (Routine)
Weldon	United States	Record high minimum temperature	15.6 C (60.1 F)	14 of 100 (Routine)
Harrisburg - Coop	United States	Record high maximum temperature	26.7 C (80.1 F)	14 of 100 (Routine)
Philadelphia City	United States	Record high maximum temperature	28.3 C (82.9 F)	14 of 100 (Routine)
Tizi Ouzou	Algeria	Record daily precipitation	20.8 mm (0.8 in)	13 of 100 (Routine)
Paris	Canada	Record high minimum temperature	3.3 C (37.9 F)	13 of 100 (Routine)
St. Petersburg	Russia	Record high maximum temperature	4.2 C (39.6 F)	13 of 100 (Routine)
Nieu-Bethesda (Pol)	South Africa	Record daily precipitation	15.2 mm (0.6 in)	13 of 100 (Routine)
Syfergat (Sar)	South Africa	Record daily precipitation	15.5 mm (0.6 in)	13 of 100 (Routine)
Cape May 2 NW	United States	Record high minimum temperature	10.6 C (51.1 F)	13 of 100 (Routine)
Beatrice	Canada	Record high maximum temperature	15.6 C (60.1 F)	12 of 100 (Routine)
Coldwater	Canada	Record high maximum temperature	18.3 C (64.9 F)	12 of 100 (Routine)
North Bruce	Canada	Record daily precipitation	14.5 mm (0.6 in)	12 of 100 (Routine)
Sfax El-Maou	Tunisia	Record daily precipitation	10.0 mm (0.4 in)	12 of 100 (Routine)
Weldon	United States	Record high maximum temperature	28.9 C (84.0 F)	12 of 100 (Routine)
Lexington	United States	Record high minimum temperature	12.8 C (55.0 F)	12 of 100 (Routine)
Laen	Australia	Record daily precipitation	9.1 mm (0.36 in)	11 of 100 (Routine)
Port Dover	Canada	Record high minimum temperature	3.9 C (39.0 F)	11 of 100 (Routine)
Brome	Canada	Record high minimum temperature	10.0 C (50.0 F)	11 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	17.8 C (64.0 F)	11 of 100 (Routine)
Louisville	United States	Record high minimum temperature	18.3 C (64.9 F)	11 of 100 (Routine)
Northfield	United States	Record high maximum temperature	21.1 C (70.0 F)	11 of 100 (Routine)
Lexington	United States	Record high maximum temperature	30.6 C (87.1 F)	11 of 100 (Routine)
Atlantic City Marina	United States	Record high minimum temperature	10.0 C (50.0 F)	11 of 100 (Routine)
Baltimore Customs House	United States	Record high minimum temperature	13.9 C (57.0 F)	11 of 100 (Routine)
Stoney Creek	Canada	Record high maximum temperature	20.0 C (68.0 F)	10 of 100 (Routine)
Toronto	Canada	Record high maximum temperature	16.1 C (61.0 F)	10 of 100 (Routine)

Counts by Type and Timescale

96 records

Records set or tied on 21 March 1921 by type: Highest daily maximum 44, Highest daily minimum 28, Heaviest daily rainfall 22, Heaviest daily snowfall 2.

Records on 21 March 1921 by type
Record type	Records
Highest daily maximum	44
Lowest daily maximum	0
Highest daily minimum	28
Lowest daily minimum	0
Heaviest daily rainfall	22
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 21 March 1921 by timescale: all-time 0, monthly 20, daily 76.

How Much Records Were Beaten By

82 broken records

Margins by which the 82 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 310.0. Ties are not counted.

Top 20 by Significance

21 March 1921

Top 20 records on 21 March 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 1921	Fraserburg, ZA	daily rain	38.4 mm (1.5 in)	34.1 mm (1.3 in)	0 years	42 of 100 (Notable)
21 March 1921	Washington, US	daily high max	31.7 C (89.1 F)	7.8 C (14.0 F)	23 years	26 of 100 (Routine)
21 March 1921	Whitehead, CA	daily snowfall	38.1 cm (15.0 in)	31.0 cm (12.2 in)	14 years	25 of 100 (Routine)
21 March 1921	Lake Cochituate, US	monthly high min	15.6 C (60.1 F)	3.9 C (7.0 F)	16 years	24 of 100 (Routine)
21 March 1921	Roodebloem, ZA	daily rain	28.4 mm (1.1 in)	12.7 mm (0.5 in)	20 years	23 of 100 (Routine)
21 March 1921	Ny City Cntrl Park, US	monthly high max	28.9 C (84.0 F)	3.3 C (5.9 F)	10 years	23 of 100 (Routine)
21 March 1921	Renfrew, CA	monthly high min	8.3 C (46.9 F)	1.1 C (2.0 F)	27 years	22 of 100 (Routine)
21 March 1921	Stornoway Airport, GB	daily high max	11.7 C (53.1 F)	1.1 C (2.0 F)	46 years	22 of 100 (Routine)
21 March 1921	Concord, US	monthly high max	26.1 C (79.0 F)	1.1 C (2.0 F)	18 years	21 of 100 (Routine)
21 March 1921	Atlantic City Marina, US	daily high max	22.2 C (72.0 F)	3.3 C (5.9 F)	34 years	21 of 100 (Routine)
21 March 1921	Barrie, CA	daily high max	17.8 C (64.0 F)	4.5 C (8.1 F)	26 years	20 of 100 (Routine)
21 March 1921	Portland, US	monthly high max	26.1 C (79.0 F)	0.5 C (0.9 F)	18 years	20 of 100 (Routine)
21 March 1921	Lowell, US	monthly high min	15.0 C (59.0 F)	2.8 C (5.0 F)	7 years	20 of 100 (Routine)
21 March 1921	Cape May 2 NW, US	daily high max	23.9 C (75.0 F)	7.2 C (13.0 F)	2 years	20 of 100 (Routine)
21 March 1921	World Trade Ctr, US	monthly high max	26.7 C (80.1 F)	1.1 C (2.0 F)	10 years	20 of 100 (Routine)
21 March 1921	Setauket Strong, US	monthly high max	26.7 C (80.1 F)	2.3 C (4.1 F)	10 years	20 of 100 (Routine)
21 March 1921	Baltimore Customs House, US	monthly high max	31.1 C (88.0 F)	1.1 C (2.0 F)	13 years	20 of 100 (Routine)
21 March 1921	Windsor Riverside, CA	daily high min	8.9 C (48.0 F)	4.5 C (8.1 F)	22 years	19 of 100 (Routine)
21 March 1921	Colesberg (Tnk), ZA	daily rain	25.4 mm (1.0 in)	10.9 mm (0.4 in)	20 years	19 of 100 (Routine)
21 March 1921	Lake Cochituate, US	monthly high max	28.9 C (84.0 F)	1.7 C (3.1 F)	10 years	19 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 1921

Records set or tied on this calendar date in each year from 1797 to 1921. 1921 had 96 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 1921-03-21: 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 2026-10-16 (16 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 50	81
50 to 100	0
100 to 150	0
150 to 200	0
200 to 250	0
250 to 300	0
300 to 350	1