Weather Records on 21 May 1911

87 weather records were set or tied worldwide on 21 May 1911. Highest significance: Oudtshoorn, ZA.

Key Facts for 21 May 1911

On 21 May 1911, 87 weather records were set or tied at long-record stations worldwide.
52 were record highs and 7 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 14 monthly and 72 daily.
Oudtshoorn set an all-time record daily precipitation of 95.3 mm (3.8 in) on 21 May 1911.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

87 stations

87 station records on 21 May 1911 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 1911: highest significance records shown on the map
Station	Country	Type	Value	Significance
Oudtshoorn	South Africa	Record daily precipitation	95.3 mm (3.8 in)	63 of 100 (Major)
Calitzdorp Pol	South Africa	Record daily precipitation	65.5 mm (2.6 in)	59 of 100 (Notable)
Macedon Forestry	Australia	Record daily precipitation	28.7 mm (1.1 in)	28 of 100 (Routine)
Riversdale	South Africa	Record daily precipitation	44.5 mm (1.8 in)	26 of 100 (Routine)
Toronto	Canada	Record high minimum temperature	15.6 C (60.1 F)	24 of 100 (Routine)
Kyneton Post Office	Australia	Record daily precipitation	32.5 mm (1.3 in)	23 of 100 (Routine)
Windsor Riverside	Canada	Record high minimum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Hamilton	Canada	Record high maximum temperature	35.0 C (95.0 F)	22 of 100 (Routine)
Barrie	Canada	Record high minimum temperature	16.1 C (61.0 F)	21 of 100 (Routine)
Ladismith (Tnk)	South Africa	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Tarkastad (Pol)	South Africa	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Hvar	Croatia	Record daily precipitation	16.7 mm (0.7 in)	20 of 100 (Routine)
Echuca Aerodrome	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
George Airport	South Africa	Record daily precipitation	27.2 mm (1.1 in)	20 of 100 (Routine)
Grahamstown	South Africa	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Jamestown	South Africa	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Chicoutimi	Canada	Record high maximum temperature	35.0 C (95.0 F)	19 of 100 (Routine)
Leipzig-Holzhausen	Germany	Record low minimum temperature	1.2 C (34.2 F)	19 of 100 (Routine)
Sotchi	Russia	Record daily precipitation	29.3 mm (1.2 in)	19 of 100 (Routine)
Owen Sound	Canada	Record high minimum temperature	23.9 C (75.0 F)	18 of 100 (Routine)
Port Dover	Canada	Record high minimum temperature	17.2 C (63.0 F)	18 of 100 (Routine)
Lindsay	Canada	Record high minimum temperature	18.9 C (66.0 F)	18 of 100 (Routine)
Montreal McGill	Canada	Record high minimum temperature	19.4 C (66.9 F)	18 of 100 (Routine)
Chicoutimi	Canada	Record high minimum temperature	15.6 C (60.1 F)	18 of 100 (Routine)
Uniondale (Tnk)	South Africa	Record daily precipitation	18.8 mm (0.7 in)	18 of 100 (Routine)
Washington	United States	Record high maximum temperature	33.9 C (93.0 F)	18 of 100 (Routine)
Chatham	Canada	Record high maximum temperature	33.9 C (93.0 F)	17 of 100 (Routine)
Trenton 2	United States	Record high maximum temperature	32.8 C (91.0 F)	17 of 100 (Routine)
Castlemaine	Australia	Record daily precipitation	19.8 mm (0.8 in)	16 of 100 (Routine)
Woodstock	Canada	Record high minimum temperature	17.8 C (64.0 F)	16 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	12.2 C (54.0 F)	16 of 100 (Routine)
Peddie (Mag)	South Africa	Record daily precipitation	15.5 mm (0.6 in)	16 of 100 (Routine)
Seymour (Mag)	South Africa	Record daily precipitation	15.2 mm (0.6 in)	16 of 100 (Routine)
Werribee (Wyndham)	Australia	Record daily precipitation	13.2 mm (0.5 in)	15 of 100 (Routine)
Stonecliffe	Canada	Record high minimum temperature	15.0 C (59.0 F)	15 of 100 (Routine)
Port Stanley	Canada	Record high minimum temperature	16.1 C (61.0 F)	15 of 100 (Routine)
Lindsay	Canada	Record high maximum temperature	31.1 C (88.0 F)	15 of 100 (Routine)
Anticosti SW Point	Canada	Record high maximum temperature	18.9 C (66.0 F)	15 of 100 (Routine)
Berlin-Dahlem	Germany	Record low minimum temperature	0.3 C (32.5 F)	15 of 100 (Routine)
Goulburn River @ Shepparton	Australia	Record daily precipitation	14.5 mm (0.6 in)	14 of 100 (Routine)
Stonecliffe	Canada	Record high maximum temperature	30.6 C (87.1 F)	14 of 100 (Routine)
Quebec	Canada	Record high maximum temperature	32.8 C (91.0 F)	14 of 100 (Routine)
Pointe Au Pere	Canada	Record high maximum temperature	25.6 C (78.1 F)	14 of 100 (Routine)
Richmond C/K (Tnk)	South Africa	Record daily precipitation	2.3 mm (0.09 in)	14 of 100 (Routine)
Toledo Blade	United States	Record high minimum temperature	20.0 C (68.0 F)	14 of 100 (Routine)
Woodstock	Canada	Record high maximum temperature	31.1 C (88.0 F)	13 of 100 (Routine)
Gorlitz	Germany	Record low maximum temperature	11.5 C (52.7 F)	13 of 100 (Routine)
Gorlitz	Germany	Record low minimum temperature	1.0 C (33.8 F)	13 of 100 (Routine)
Port Stanley	Canada	Record high maximum temperature	26.7 C (80.1 F)	12 of 100 (Routine)
Dalhousie	Canada	Record high maximum temperature	30.0 C (86.0 F)	12 of 100 (Routine)
Santa Fe	United States	Record low minimum temperature	-0.6 C (30.9 F)	12 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high maximum temperature	30.0 C (86.0 F)	12 of 100 (Routine)
Bairnsdale 1	Australia	Record daily precipitation	14.2 mm (0.6 in)	11 of 100 (Routine)
Beatrice	Canada	Record high minimum temperature	16.1 C (61.0 F)	11 of 100 (Routine)
Gravenhurst	Canada	Record high maximum temperature	30.0 C (86.0 F)	11 of 100 (Routine)
Southampton	Canada	Record high minimum temperature	14.4 C (57.9 F)	11 of 100 (Routine)
Toronto	Canada	Record high maximum temperature	29.4 C (84.9 F)	11 of 100 (Routine)
Peterborough	Canada	Record high maximum temperature	31.1 C (88.0 F)	11 of 100 (Routine)
Fort Beaufort	South Africa	Record daily precipitation	9.4 mm (0.37 in)	11 of 100 (Routine)
Graaff Reinet	South Africa	Record daily precipitation	5.3 mm (0.21 in)	11 of 100 (Routine)

Counts by Type and Timescale

87 records

Records set or tied on 21 May 1911 by type: Highest daily maximum 27, Lowest daily maximum 2, Highest daily minimum 25, Lowest daily minimum 5, Heaviest daily rainfall 28.

Records on 21 May 1911 by type
Record type	Records
Highest daily maximum	27
Lowest daily maximum	2
Highest daily minimum	25
Lowest daily minimum	5
Heaviest daily rainfall	28
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 May 1911 by timescale: all-time 1, monthly 14, daily 72.

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 34.3. Ties are not counted.

Top 20 by Significance

21 May 1911

Top 20 records on 21 May 1911 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 1911	Oudtshoorn, ZA	all-time rain	95.3 mm (3.8 in)	34.3 mm (1.4 in)	2 years	63 of 100 (Major)
21 May 1911	Calitzdorp Pol, ZA	monthly rain	65.5 mm (2.6 in)	28.7 mm (1.1 in)	26 years	59 of 100 (Notable)
21 May 1911	Macedon Forestry, AU	daily rain	28.7 mm (1.1 in)	16.5 mm (0.6 in)	21 years	28 of 100 (Routine)
21 May 1911	Riversdale, ZA	monthly rain	44.5 mm (1.8 in)	5.6 mm (0.22 in)	21 years	26 of 100 (Routine)
21 May 1911	Toronto, CA	daily high min	15.6 C (60.1 F)	1.2 C (2.2 F)	46 years	24 of 100 (Routine)
21 May 1911	Kyneton Post Office, AU	daily rain	32.5 mm (1.3 in)	16.8 mm (0.7 in)	8 years	23 of 100 (Routine)
21 May 1911	Windsor Riverside, CA	daily high min	18.3 C (64.9 F)	3.9 C (7.0 F)	33 years	22 of 100 (Routine)
21 May 1911	Hamilton, CA	daily high max	35.0 C (95.0 F)	5.0 C (9.0 F)	33 years	22 of 100 (Routine)
21 May 1911	Barrie, CA	daily high min	16.1 C (61.0 F)	3.3 C (5.9 F)	33 years	21 of 100 (Routine)
21 May 1911	Ladismith (Tnk), ZA	daily rain	24.4 mm (1.0 in)	21.9 mm (0.9 in)	32 years	20 of 100 (Routine)
21 May 1911	Tarkastad (Pol), ZA	daily rain	15.2 mm (0.6 in)	14.2 mm (0.6 in)	28 years	20 of 100 (Routine)
21 May 1911	Hvar, HR	daily rain	16.7 mm (0.7 in)	11.1 mm (0.4 in)	37 years	20 of 100 (Routine)
21 May 1911	Echuca Aerodrome, AU	daily rain	24.1 mm (0.9 in)	13.2 mm (0.5 in)	21 years	20 of 100 (Routine)
21 May 1911	George Airport, ZA	daily rain	27.2 mm (1.1 in)	17.0 mm (0.7 in)	17 years	20 of 100 (Routine)
21 May 1911	Grahamstown, ZA	daily rain	20.6 mm (0.8 in)	18.1 mm (0.7 in)	22 years	20 of 100 (Routine)
21 May 1911	Jamestown, ZA	daily rain	14.0 mm (0.6 in)	10.2 mm (0.4 in)	18 years	20 of 100 (Routine)
21 May 1911	Chicoutimi, CA	monthly high max	35.0 C (95.0 F)	2.2 C (4.0 F)	12 years	19 of 100 (Routine)
21 May 1911	Leipzig-Holzhausen, DE	daily low min	1.2 C (34.2 F)	1.1 C (2.0 F)	44 years	19 of 100 (Routine)
21 May 1911	Sotchi, RU	daily rain	29.3 mm (1.2 in)	13.3 mm (0.5 in)	29 years	19 of 100 (Routine)
21 May 1911	Owen Sound, CA	monthly high min	23.9 C (75.0 F)	2.8 C (5.0 F)	0 years	18 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 1911

Records set or tied on this calendar date in each year from 1793 to 1911. 1911 had 87 records.

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

Records on 05-21 in each year
Year	Records
1793	1
1795	1
1811	1
1837	2
1842	1
1847	2
1854	1
1857	1
1858	1
1865	1
1866	1
1870	2
1875	1
1876	1
1880	2
1882	1
1885	1
1886	2
1887	3
1889	5
1890	3
1891	6
1892	1
1893	1
1894	4
1895	4
1896	5
1897	2
1898	1
1899	5
1900	1
1901	3
1902	4
1903	26
1904	8
1905	7
1906	12
1907	36
1908	13
1909	13
1910	14
1911	87
1912	24
1913	13
1914	26
1915	24
1916	13
1917	76
1918	51
1919	170
1920	39
1921	158
1922	39
1923	125
1924	148
1925	250
1926	221
1927	207
1928	173
1929	247
1930	133
1931	488
1932	343
1933	290
1934	590
1935	190
1936	328
1937	227
1938	348
1939	355
1940	456
1941	525
1942	482
1943	463
1944	310
1945	515
1946	324
1947	485
1948	312
1949	593
1950	403
1951	271
1952	385
1953	501
1954	961
1955	507
1956	409
1957	709
1958	511
1959	684
1960	615
1961	306
1962	553
1963	598
1964	788
1965	238
1966	296
1967	1,022
1968	549
1969	832
1970	449
1971	536
1972	557
1973	493
1974	847
1975	1,160
1976	393
1977	756
1978	575
1979	787
1980	857
1981	1,550
1982	599
1983	1,106
1984	950
1985	610
1986	908
1987	1,242
1988	819
1989	671
1990	947
1991	1,065
1992	1,143
1993	1,197
1994	656
1995	749
1996	1,461
1997	953
1998	1,200
1999	544
2000	897
2001	1,187
2002	2,048
2003	807
2004	898
2005	1,020
2006	810
2007	894
2008	740
2009	1,315
2010	962
2011	959
2012	848
2013	884
2014	522
2015	956
2016	567
2017	780
2018	525
2019	1,668
2020	707
2021	1,131
2022	1,512
2023	794
2024	751
2025	776
2026	356

Download the Data

Data for records on 1911-05-21: 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	58
5 to 10	8
10 to 15	5
15 to 20	4
20 to 25	1
25 to 30	1
30 to 35	1