Weather Records on 15 May 1921

92 weather records were set or tied worldwide on 15 May 1921. Highest significance: Cumbalum (Fairview), AU.

Key Facts for 15 May 1921

On 15 May 1921, 92 weather records were set or tied at long-record stations worldwide.
31 were record highs and 16 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 3 monthly and 86 daily.
Cumbalum (Fairview) set an all-time record daily precipitation of 296.7 mm (11.7 in) on 15 May 1921.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 433 records.

Record Map

92 stations

92 station records on 15 May 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 May 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cumbalum (Fairview)	Australia	Record daily precipitation	296.7 mm (11.7 in)	70 of 100 (Major)
Spring Hill	Australia	Record daily precipitation	333.2 mm (13.1 in)	63 of 100 (Major)
Yamba Pilot Station	Australia	Record daily precipitation	273.1 mm (10.8 in)	58 of 100 (Notable)
Lawrence Post Office	Australia	Record daily precipitation	174.2 mm (6.9 in)	53 of 100 (Notable)
Woodburn Post Office	Australia	Record daily precipitation	155.4 mm (6.1 in)	52 of 100 (Notable)
Ramornie	Australia	Record daily precipitation	77.2 mm (3.0 in)	48 of 100 (Notable)
Woolgoolga (Clear Place)	Australia	Record daily precipitation	139.4 mm (5.5 in)	48 of 100 (Notable)
Fernmount	Australia	Record daily precipitation	189.2 mm (7.4 in)	48 of 100 (Notable)
Fort National	Algeria	Record daily precipitation	65.8 mm (2.6 in)	47 of 100 (Notable)
Grafton City Council	Australia	Record daily precipitation	106.7 mm (4.2 in)	45 of 100 (Notable)
Tampa	United States	Record daily precipitation	79.0 mm (3.1 in)	44 of 100 (Notable)
Ebor (Kotupna)	Australia	Record daily precipitation	77.0 mm (3.0 in)	43 of 100 (Notable)
Aberfoyle	Australia	Record daily precipitation	38.1 mm (1.5 in)	40 of 100 (Notable)
Bowraville Recreation Club	Australia	Record daily precipitation	81.3 mm (3.2 in)	40 of 100 (Notable)
Branxton Post Office	Australia	Record daily precipitation	64.8 mm (2.6 in)	38 of 100 (Notable)
Ebor (Wongwibinda)	Australia	Record daily precipitation	45.2 mm (1.8 in)	37 of 100 (Notable)
Bellbrook (East Street)	Australia	Record daily precipitation	54.4 mm (2.1 in)	35 of 100 (Notable)
Wingham (Lanark Close)	Australia	Record daily precipitation	63.0 mm (2.5 in)	34 of 100 (Routine)
Rollands Plains	Australia	Record daily precipitation	64.3 mm (2.5 in)	29 of 100 (Routine)
White River	Canada	Record daily snowfall	5.1 cm (2.0 in)	26 of 100 (Routine)
Cudgen Plantation	Australia	Record daily precipitation	64.0 mm (2.5 in)	25 of 100 (Routine)
Bjuraker	Sweden	Record high minimum temperature	11.7 C (53.1 F)	25 of 100 (Routine)
Condong Sugar Mill	Australia	Record daily precipitation	61.0 mm (2.4 in)	24 of 100 (Routine)
Bon Accord	Australia	Record daily precipitation	29.5 mm (1.2 in)	23 of 100 (Routine)
Surat	Australia	Record daily precipitation	35.6 mm (1.4 in)	22 of 100 (Routine)
Guyra Post Office	Australia	Record daily precipitation	47.0 mm (1.9 in)	22 of 100 (Routine)
Sveg	Sweden	Record high minimum temperature	12.0 C (53.6 F)	22 of 100 (Routine)
Emu Park Hill St	Australia	Record daily precipitation	36.6 mm (1.4 in)	21 of 100 (Routine)
Jimbour State School	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Constantine	Algeria	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Banana Post Office	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	25.0 C (77.0 F)	20 of 100 (Routine)
Gavle	Sweden	Record high minimum temperature	10.5 C (50.9 F)	20 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record low minimum temperature	-3.9 C (25.0 F)	20 of 100 (Routine)
Maclean (McLachlan Street)	Australia	Record daily precipitation	139.7 mm (5.5 in)	18 of 100 (Routine)
Anticosti SW Point	Canada	Record daily precipitation	13.7 mm (0.5 in)	18 of 100 (Routine)
Bird Rocks	Canada	Record high minimum temperature	5.0 C (41.0 F)	18 of 100 (Routine)
Tomsk	Russia	Record daily precipitation	7.4 mm (0.29 in)	18 of 100 (Routine)
Ravenswood Post Office	Australia	Record daily precipitation	17.8 mm (0.7 in)	17 of 100 (Routine)
Robe Comparison	Australia	Record high maximum temperature	21.6 C (70.9 F)	16 of 100 (Routine)
Qu'appelle	Canada	Record low minimum temperature	-5.6 C (21.9 F)	16 of 100 (Routine)
Chatham	Canada	Record high maximum temperature	25.0 C (77.0 F)	16 of 100 (Routine)
Vanersborg	Sweden	Record high maximum temperature	22.0 C (71.6 F)	16 of 100 (Routine)
Gavle	Sweden	Record high maximum temperature	24.0 C (75.2 F)	16 of 100 (Routine)
Sveg	Sweden	Record high maximum temperature	21.0 C (69.8 F)	16 of 100 (Routine)
Camboon Station	Australia	Record daily precipitation	21.6 mm (0.9 in)	15 of 100 (Routine)
Grenfell	Canada	Record low minimum temperature	-6.7 C (19.9 F)	15 of 100 (Routine)
Indian Head Cda	Canada	Record low minimum temperature	-6.7 C (19.9 F)	15 of 100 (Routine)
White River	Canada	Record low maximum temperature	1.1 C (34.0 F)	15 of 100 (Routine)
Crookston NW Exp STN	United States	Record low maximum temperature	7.2 C (45.0 F)	15 of 100 (Routine)
La Crosse Wb City	United States	Record low minimum temperature	-0.6 C (30.9 F)	15 of 100 (Routine)
Palmerville	Australia	Record daily precipitation	2.3 mm (0.09 in)	14 of 100 (Routine)
Port Arthur	Canada	Record low minimum temperature	-4.4 C (24.1 F)	14 of 100 (Routine)
Parry Sound	Canada	Record low maximum temperature	7.2 C (45.0 F)	14 of 100 (Routine)
Belle Isle	Canada	Record low maximum temperature	-1.7 C (28.9 F)	14 of 100 (Routine)
Husum	Germany	Record high maximum temperature	26.3 C (79.3 F)	14 of 100 (Routine)
Escanaba	United States	Record low maximum temperature	5.0 C (41.0 F)	14 of 100 (Routine)
Tarriaro	Australia	Record daily precipitation	20.6 mm (0.8 in)	13 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	7.5 C (45.5 F)	12 of 100 (Routine)
Algiers-Ville/Universite	Algeria	Record low maximum temperature	18.0 C (64.4 F)	11 of 100 (Routine)

Counts by Type and Timescale

92 records

Records set or tied on 15 May 1921 by type: Highest daily maximum 18, Lowest daily maximum 9, Highest daily minimum 13, Lowest daily minimum 7, Heaviest daily rainfall 44, Heaviest daily snowfall 1.

Records on 15 May 1921 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	9
Highest daily minimum	13
Lowest daily minimum	7
Heaviest daily rainfall	44
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 15 May 1921 by timescale: all-time 3, monthly 3, daily 86.

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 130.0. Ties are not counted.

Top 20 by Significance

15 May 1921

Top 20 records on 15 May 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1921	Cumbalum (Fairview), AU	all-time rain	296.7 mm (11.7 in)	108.7 mm (4.3 in)	25 years	70 of 100 (Major)
15 May 1921	Spring Hill, AU	all-time rain	333.2 mm (13.1 in)	79.2 mm (3.1 in)	0 years	63 of 100 (Major)
15 May 1921	Yamba Pilot Station, AU	all-time rain	273.1 mm (10.8 in)	42.0 mm (1.7 in)	31 years	58 of 100 (Notable)
15 May 1921	Lawrence Post Office, AU	monthly rain	174.2 mm (6.9 in)	86.8 mm (3.4 in)	1 year	53 of 100 (Notable)
15 May 1921	Woodburn Post Office, AU	daily rain	155.4 mm (6.1 in)	130.0 mm (5.1 in)	31 years	52 of 100 (Notable)
15 May 1921	Ramornie, AU	daily rain	77.2 mm (3.0 in)	56.6 mm (2.2 in)	16 years	48 of 100 (Notable)
15 May 1921	Woolgoolga (Clear Place), AU	daily rain	139.4 mm (5.5 in)	129.2 mm (5.1 in)	16 years	48 of 100 (Notable)
15 May 1921	Fernmount, AU	daily rain	189.2 mm (7.4 in)	129.5 mm (5.1 in)	16 years	48 of 100 (Notable)
15 May 1921	Fort National, DZ	daily rain	65.8 mm (2.6 in)	52.2 mm (2.1 in)	10 years	47 of 100 (Notable)
15 May 1921	Grafton City Council, AU	daily rain	106.7 mm (4.2 in)	37.4 mm (1.5 in)	37 years	45 of 100 (Notable)
15 May 1921	Tampa, US	daily rain	79.0 mm (3.1 in)	55.4 mm (2.2 in)	8 years	44 of 100 (Notable)
15 May 1921	Ebor (Kotupna), AU	daily rain	77.0 mm (3.0 in)	43.7 mm (1.7 in)	2 years	43 of 100 (Notable)
15 May 1921	Aberfoyle, AU	daily rain	38.1 mm (1.5 in)	26.9 mm (1.1 in)	27 years	40 of 100 (Notable)
15 May 1921	Bowraville Recreation Club, AU	daily rain	81.3 mm (3.2 in)	65.6 mm (2.6 in)	2 years	40 of 100 (Notable)
15 May 1921	Branxton Post Office, AU	daily rain	64.8 mm (2.6 in)	49.3 mm (1.9 in)	6 years	38 of 100 (Notable)
15 May 1921	Ebor (Wongwibinda), AU	daily rain	45.2 mm (1.8 in)	29.7 mm (1.2 in)	6 years	37 of 100 (Notable)
15 May 1921	Bellbrook (East Street), AU	daily rain	54.4 mm (2.1 in)	46.8 mm (1.8 in)	2 years	35 of 100 (Notable)
15 May 1921	Wingham (Lanark Close), AU	daily rain	63.0 mm (2.5 in)	48.3 mm (1.9 in)	27 years	34 of 100 (Routine)
15 May 1921	Rollands Plains, AU	daily rain	64.3 mm (2.5 in)	52.6 mm (2.1 in)	8 years	29 of 100 (Routine)
15 May 1921	White River, CA	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	33 years	26 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

1820 to 1921

Records set or tied on this calendar date in each year from 1820 to 1921. 1921 had 92 records.

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

Records on 05-15 in each year
Year	Records
1820	1
1825	1
1831	1
1832	1
1837	2
1845	1
1847	2
1848	1
1855	2
1857	2
1859	1
1862	1
1863	1
1865	1
1866	2
1867	1
1868	2
1870	1
1871	3
1874	2
1876	4
1878	1
1879	2
1881	1
1883	1
1885	1
1886	2
1888	3
1891	3
1893	5
1894	2
1895	4
1896	2
1897	4
1898	3
1899	9
1900	9
1901	2
1902	9
1903	4
1904	13
1905	16
1906	10
1907	27
1908	25
1909	89
1910	27
1911	27
1912	26
1913	60
1914	16
1915	236
1916	27
1917	80
1918	133
1919	25
1920	58
1921	92
1922	30
1923	125
1924	174
1925	100
1926	161
1927	191
1928	144
1929	161
1930	136
1931	459
1932	368
1933	439
1934	227
1935	288
1936	372
1937	373
1938	393
1939	351
1940	179
1941	454
1942	701
1943	568
1944	630
1945	588
1946	238
1947	334
1948	264
1949	363
1950	260
1951	736
1952	476
1953	426
1954	355
1955	538
1956	466
1957	521
1958	605
1959	764
1960	291
1961	508
1962	1,128
1963	782
1964	347
1965	320
1966	389
1967	609
1968	1,019
1969	790
1970	512
1971	351
1972	484
1973	818
1974	1,230
1975	372
1976	803
1977	1,186
1978	922
1979	404
1980	625
1981	586
1982	500
1983	1,215
1984	1,059
1985	649
1986	679
1987	1,073
1988	643
1989	552
1990	776
1991	1,179
1992	944
1993	784
1994	910
1995	1,750
1996	1,452
1997	1,175
1998	1,641
1999	810
2000	850
2001	1,280
2002	801
2003	1,023
2004	1,046
2005	767
2006	955
2007	949
2008	995
2009	675
2010	1,088
2011	1,298
2012	751
2013	1,081
2014	1,411
2015	717
2016	890
2017	435
2018	1,074
2019	627
2020	472
2021	412
2022	847
2023	566
2024	596
2025	801
2026	481

Download the Data

Data for records on 1921-05-15: 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	58
20 to 40	7
40 to 60	10
60 to 80	2
80 to 100	1
100 to 120	1
120 to 140	3