Weather Records on 11 May 1921

58 weather records were set or tied worldwide on 11 May 1921. Highest significance: Hornsby Junction (Thornleigh), AU.

Key Facts for 11 May 1921

On 11 May 1921, 58 weather records were set or tied at long-record stations worldwide.
11 were record highs and 2 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 58 daily.
Hornsby Junction (Thornleigh) set a daily record precipitation of 109.7 mm (4.3 in) on 11 May 1921.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 466 records.

Record Map

58 stations

58 station records on 11 May 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hornsby Junction (Thornleigh)	Australia	Record daily precipitation	109.7 mm (4.3 in)	46 of 100 (Notable)
Burwood 1	Australia	Record daily precipitation	63.5 mm (2.5 in)	46 of 100 (Notable)
Prospect Reservoir	Australia	Record daily precipitation	70.1 mm (2.8 in)	46 of 100 (Notable)
Wollongong Post Office	Australia	Record daily precipitation	104.6 mm (4.1 in)	43 of 100 (Notable)
Newport	United States	Record daily precipitation	49.3 mm (1.9 in)	43 of 100 (Notable)
Jamberoo (Lorna)	Australia	Record daily precipitation	82.8 mm (3.3 in)	42 of 100 (Notable)
Gosford (Gertrude Place)	Australia	Record daily precipitation	82.6 mm (3.3 in)	39 of 100 (Notable)
Campbelltown 1	Australia	Record daily precipitation	52.8 mm (2.1 in)	39 of 100 (Notable)
Moss Vale (Hoskins Street)	Australia	Record daily precipitation	64.0 mm (2.5 in)	35 of 100 (Notable)
Nelson Bay (Nelson Head)	Australia	Record daily precipitation	51.8 mm (2.0 in)	30 of 100 (Routine)
Cobbity (Roseneath)	Australia	Record daily precipitation	44.5 mm (1.8 in)	30 of 100 (Routine)
Camden (Brownlow Hill)	Australia	Record daily precipitation	38.6 mm (1.5 in)	29 of 100 (Routine)
Emu Plains	Australia	Record daily precipitation	29.7 mm (1.2 in)	28 of 100 (Routine)
Camden Bowling Club	Australia	Record daily precipitation	50.8 mm (2.0 in)	25 of 100 (Routine)
Chattanooga Wb City	United States	Record daily precipitation	26.4 mm (1.0 in)	24 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record daily precipitation	46.0 mm (1.8 in)	22 of 100 (Routine)
Berry Masonic Village	Australia	Record daily precipitation	103.4 mm (4.1 in)	22 of 100 (Routine)
Helensburgh (Sawan St)	Australia	Record daily precipitation	50.8 mm (2.0 in)	22 of 100 (Routine)
Prince Albert	Canada	Record daily precipitation	25.1 mm (1.0 in)	22 of 100 (Routine)
Bathurst Gaol	Australia	Record high minimum temperature	8.3 C (46.9 F)	21 of 100 (Routine)
Minto Surrey Street	Australia	Record daily precipitation	27.9 mm (1.1 in)	20 of 100 (Routine)
Richmond - Uws Hawkesbury	Australia	Record daily precipitation	21.3 mm (0.8 in)	19 of 100 (Routine)
Pitt Town (the Manse)	Australia	Record daily precipitation	26.4 mm (1.0 in)	19 of 100 (Routine)
Hambantota	Sri Lanka	Record high minimum temperature	26.8 C (80.2 F)	19 of 100 (Routine)
Stromsfoss Sluse	Norway	Record daily precipitation	15.0 mm (0.6 in)	19 of 100 (Routine)
Milton Post Office	Australia	Record daily precipitation	94.0 mm (3.7 in)	18 of 100 (Routine)
Bondi	Australia	Record daily precipitation	29.5 mm (1.2 in)	17 of 100 (Routine)
Menangle Jmai	Australia	Record daily precipitation	45.7 mm (1.8 in)	17 of 100 (Routine)
Bjuraker	Sweden	Record high minimum temperature	6.0 C (42.8 F)	17 of 100 (Routine)
Wyong (Wyong Golf Club)	Australia	Record daily precipitation	27.9 mm (1.1 in)	16 of 100 (Routine)
Fredericton Unb	Canada	Record low minimum temperature	-1.7 C (28.9 F)	16 of 100 (Routine)
Bungonia (Inverary Park)	Australia	Record daily precipitation	25.4 mm (1.0 in)	15 of 100 (Routine)
Taralga Post Office	Australia	Record daily precipitation	20.6 mm (0.8 in)	15 of 100 (Routine)
Falmouth	United States	Record daily precipitation	18.8 mm (0.7 in)	15 of 100 (Routine)
Waverley (Belltrees 2)	Australia	Record daily precipitation	16.0 mm (0.6 in)	14 of 100 (Routine)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	53.3 mm (2.1 in)	14 of 100 (Routine)
Yandilla	Australia	Record daily precipitation	6.1 mm (0.24 in)	13 of 100 (Routine)
Cataract River	Australia	Record daily precipitation	32.5 mm (1.3 in)	13 of 100 (Routine)
Nossen	Germany	Record daily precipitation	15.2 mm (0.6 in)	12 of 100 (Routine)
Murphy 4ESE	United States	Record daily precipitation	16.8 mm (0.7 in)	12 of 100 (Routine)
Katoomba (Murri St)	Australia	Record daily precipitation	21.8 mm (0.9 in)	10 of 100 (Routine)
Springwood Bowling Club	Australia	Record daily precipitation	21.1 mm (0.8 in)	10 of 100 (Routine)
Astrakan	Russia	Record high minimum temperature	16.0 C (60.8 F)	10 of 100 (Routine)
Bowral Post Office	Australia	Record daily precipitation	44.2 mm (1.7 in)	9 of 100 (Routine)
Picton Council Depot	Australia	Record daily precipitation	35.6 mm (1.4 in)	9 of 100 (Routine)
Woodside	Australia	Record daily precipitation	9.7 mm (0.38 in)	9 of 100 (Routine)
Tashkent	Uzbekistan	Record low maximum temperature	16.3 C (61.3 F)	9 of 100 (Routine)
Edmonton	Canada	Record daily precipitation	10.7 mm (0.4 in)	8 of 100 (Routine)
Kiev	Ukraine	Record high maximum temperature	28.5 C (83.3 F)	7 of 100 (Routine)
Morpeth Post Office	Australia	Record daily precipitation	5.1 mm (0.20 in)	6 of 100 (Routine)
Goulburn (Kippilaw)	Australia	Record daily precipitation	5.3 mm (0.21 in)	6 of 100 (Routine)
Halden	Norway	Record daily precipitation	5.8 mm (0.23 in)	6 of 100 (Routine)
Harnosand	Sweden	Record high minimum temperature	4.0 C (39.2 F)	3 of 100 (Routine)
Sacramento 5 ESE	United States	Record high maximum temperature	31.7 C (89.1 F)	3 of 100 (Routine)
Gavle	Sweden	Record high minimum temperature	6.0 C (42.8 F)	2 of 100 (Routine)
Jokkmokk	Sweden	Record high minimum temperature	3.5 C (38.3 F)	2 of 100 (Routine)
Crookston NW Exp STN	United States	Record high minimum temperature	12.2 C (54.0 F)	2 of 100 (Routine)
Needles	United States	Record high maximum temperature	39.4 C (102.9 F)	1 of 100 (Routine)

Counts by Type and Timescale

58 records

Records set or tied on 11 May 1921 by type: Highest daily maximum 3, Lowest daily maximum 1, Highest daily minimum 8, Lowest daily minimum 1, Heaviest daily rainfall 45.

Records on 11 May 1921 by type
Record type	Records
Highest daily maximum	3
Lowest daily maximum	1
Highest daily minimum	8
Lowest daily minimum	1
Heaviest daily rainfall	45
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 May 1921 by timescale: all-time 0, monthly 0, daily 58.

How Much Records Were Beaten By

52 broken records

Margins by which the 52 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 97.0. Ties are not counted.

Top 20 by Significance

11 May 1921

Top 20 records on 11 May 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1921	Hornsby Junction (Thornleigh), AU	daily rain	109.7 mm (4.3 in)	97.0 mm (3.8 in)	10 years	46 of 100 (Notable)
11 May 1921	Burwood 1, AU	daily rain	63.5 mm (2.5 in)	59.2 mm (2.3 in)	36 years	46 of 100 (Notable)
11 May 1921	Prospect Reservoir, AU	daily rain	70.1 mm (2.8 in)	69.1 mm (2.7 in)	10 years	46 of 100 (Notable)
11 May 1921	Wollongong Post Office, AU	daily rain	104.6 mm (4.1 in)	64.5 mm (2.5 in)	41 years	43 of 100 (Notable)
11 May 1921	Newport, US	daily rain	49.3 mm (1.9 in)	42.2 mm (1.7 in)	25 years	43 of 100 (Notable)
11 May 1921	Jamberoo (Lorna), AU	daily rain	82.8 mm (3.3 in)	64.5 mm (2.5 in)	22 years	42 of 100 (Notable)
11 May 1921	Gosford (Gertrude Place), AU	daily rain	82.6 mm (3.3 in)	64.8 mm (2.6 in)	41 years	39 of 100 (Notable)
11 May 1921	Campbelltown 1, AU	daily rain	52.8 mm (2.1 in)	47.7 mm (1.9 in)	24 years	39 of 100 (Notable)
11 May 1921	Moss Vale (Hoskins Street), AU	daily rain	64.0 mm (2.5 in)	43.7 mm (1.7 in)	10 years	35 of 100 (Notable)
11 May 1921	Nelson Bay (Nelson Head), AU	daily rain	51.8 mm (2.0 in)	33.3 mm (1.3 in)	37 years	30 of 100 (Routine)
11 May 1921	Cobbity (Roseneath), AU	daily rain	44.5 mm (1.8 in)	38.9 mm (1.5 in)	10 years	30 of 100 (Routine)
11 May 1921	Camden (Brownlow Hill), AU	daily rain	38.6 mm (1.5 in)	34.8 mm (1.4 in)	10 years	29 of 100 (Routine)
11 May 1921	Emu Plains, AU	daily rain	29.7 mm (1.2 in)	27.4 mm (1.1 in)	27 years	28 of 100 (Routine)
11 May 1921	Camden Bowling Club, AU	daily rain	50.8 mm (2.0 in)	36.1 mm (1.4 in)	16 years	25 of 100 (Routine)
11 May 1921	Chattanooga Wb City, US	daily rain	26.4 mm (1.0 in)	13.7 mm (0.5 in)	30 years	24 of 100 (Routine)
11 May 1921	Sydney (Observatory Hill), AU	daily rain	46.0 mm (1.8 in)	10.2 mm (0.4 in)	37 years	22 of 100 (Routine)
11 May 1921	Berry Masonic Village, AU	daily rain	103.4 mm (4.1 in)	45.0 mm (1.8 in)	10 years	22 of 100 (Routine)
11 May 1921	Helensburgh (Sawan St), AU	daily rain	50.8 mm (2.0 in)	42.2 mm (1.7 in)	10 years	22 of 100 (Routine)
11 May 1921	Prince Albert, CA	daily rain	25.1 mm (1.0 in)	9.9 mm (0.39 in)	14 years	22 of 100 (Routine)
11 May 1921	Bathurst Gaol, AU	daily high min	8.3 C (46.9 F)	0.5 C (0.9 F)	49 years	21 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

1814 to 1921

Records set or tied on this calendar date in each year from 1814 to 1921. 1921 had 58 records.

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

Records on 05-11 in each year
Year	Records
1814	3
1832	1
1836	3
1837	1
1838	1
1848	2
1856	1
1860	2
1865	1
1867	1
1869	1
1872	1
1874	2
1879	2
1880	1
1881	5
1883	3
1884	2
1885	1
1886	2
1887	1
1888	1
1889	2
1892	1
1893	3
1894	2
1895	4
1896	3
1897	6
1898	5
1900	7
1901	9
1902	6
1903	7
1904	6
1905	12
1906	21
1907	44
1908	9
1909	12
1910	16
1911	99
1912	21
1913	20
1914	20
1915	16
1916	22
1917	40
1918	54
1919	56
1920	181
1921	58
1922	61
1923	111
1924	239
1925	410
1926	472
1927	318
1928	252
1929	126
1930	380
1931	254
1932	170
1933	429
1934	332
1935	276
1936	363
1937	170
1938	141
1939	213
1940	340
1941	411
1942	389
1943	646
1944	408
1945	483
1946	747
1947	480
1948	407
1949	451
1950	285
1951	395
1952	629
1953	686
1954	492
1955	235
1956	942
1957	439
1958	499
1959	575
1960	809
1961	663
1962	670
1963	984
1964	299
1965	356
1966	992
1967	974
1968	909
1969	349
1970	764
1971	565
1972	673
1973	429
1974	795
1975	383
1976	509
1977	836
1978	1,070
1979	1,239
1980	693
1981	1,298
1982	624
1983	930
1984	666
1985	835
1986	684
1987	1,247
1988	485
1989	952
1990	935
1991	990
1992	728
1993	1,088
1994	633
1995	1,244
1996	1,088
1997	1,033
1998	1,315
1999	1,052
2000	1,286
2001	848
2002	845
2003	1,321
2004	834
2005	944
2006	822
2007	833
2008	1,015
2009	605
2010	1,292
2011	1,414
2012	1,181
2013	615
2014	662
2015	1,038
2016	497
2017	546
2018	988
2019	915
2020	1,068
2021	590
2022	1,470
2023	390
2024	579
2025	1,104
2026	797

Download the Data

Data for records on 1921-05-11: 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 20	32
20 to 40	9
40 to 60	6
60 to 80	4
80 to 100	1