Weather Records on 9 May 1921

102 weather records were set or tied worldwide on 9 May 1921. Highest significance: Altentreptow, DE.

Key Facts for 9 May 1921

On 9 May 1921, 102 weather records were set or tied at long-record stations worldwide.
13 were record highs and 3 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 100 daily.
Altentreptow set a daily record precipitation of 38.0 mm (1.5 in) on 9 May 1921.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 434 records.

Record Map

102 stations

102 station records on 9 May 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Altentreptow	Germany	Record daily precipitation	38.0 mm (1.5 in)	50 of 100 (Notable)
Canowindra (Canowindra Street)	Australia	Record daily precipitation	46.0 mm (1.8 in)	47 of 100 (Notable)
Innisfail	Australia	Record daily precipitation	161.5 mm (6.4 in)	43 of 100 (Notable)
Rylstone (Ilford Rd)	Australia	Record daily precipitation	41.1 mm (1.6 in)	42 of 100 (Notable)
Lithgow (Cooerwull)	Australia	Record daily precipitation	35.1 mm (1.4 in)	40 of 100 (Notable)
Lithgow (Birdwood St)	Australia	Record daily precipitation	41.9 mm (1.6 in)	35 of 100 (Notable)
Methven	Australia	Record daily precipitation	37.3 mm (1.5 in)	34 of 100 (Routine)
Brogers Creek Upper (Cookville	Australia	Record daily precipitation	227.3 mm (8.9 in)	33 of 100 (Routine)
O'Connell (Stratford)	Australia	Record daily precipitation	32.0 mm (1.3 in)	29 of 100 (Routine)
Blackville (Welton Dale)	Australia	Record daily precipitation	39.4 mm (1.6 in)	28 of 100 (Routine)
Mount Victoria (Mt Victoria (S	Australia	Record daily precipitation	27.9 mm (1.1 in)	28 of 100 (Routine)
Cadia	Australia	Record daily precipitation	30.7 mm (1.2 in)	28 of 100 (Routine)
Wellington (Agrowplow)	Australia	Record daily precipitation	39.1 mm (1.5 in)	28 of 100 (Routine)
Brewongle	Australia	Record daily precipitation	26.9 mm (1.1 in)	26 of 100 (Routine)
Olympia Priest Pt Park	United States	Record low minimum temperature	-1.7 C (28.9 F)	26 of 100 (Routine)
Wellwood	Australia	Record daily precipitation	27.7 mm (1.1 in)	21 of 100 (Routine)
Jonkoping	Sweden	Record high minimum temperature	9.0 C (48.2 F)	21 of 100 (Routine)
Cudal Post Office	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Trunkey Creek (Trunkey (Black	Australia	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Emu Plains	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Peak Hill (Bruie Plains)	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Kamferskraal	South Africa	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Tylden "Tulden"	South Africa	Record daily precipitation	5.1 mm (0.20 in)	20 of 100 (Routine)
Fernleigh (St.Helena)	Australia	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Blayney Post Office	Australia	Record daily precipitation	29.7 mm (1.2 in)	20 of 100 (Routine)
Soltau	Germany	Record daily precipitation	17.6 mm (0.7 in)	20 of 100 (Routine)
Sterling	South Africa	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Britstown (Pol)	South Africa	Record daily precipitation	7.6 mm (0.30 in)	20 of 100 (Routine)
Bathurst Gaol	Australia	Record daily precipitation	27.4 mm (1.1 in)	19 of 100 (Routine)
Pitt Town (the Manse)	Australia	Record daily precipitation	25.4 mm (1.0 in)	19 of 100 (Routine)
Swift Current	Canada	Record daily precipitation	12.7 mm (0.5 in)	19 of 100 (Routine)
Bancroft	Canada	Record high minimum temperature	16.7 C (62.1 F)	19 of 100 (Routine)
Chatham	Canada	Record daily snowfall	1.0 cm (0.4 in)	19 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record high minimum temperature	7.8 C (46.0 F)	19 of 100 (Routine)
Cassilis (Dalkeith)	Australia	Record daily precipitation	15.5 mm (0.6 in)	18 of 100 (Routine)
Stuart Town	Australia	Record daily precipitation	26.7 mm (1.1 in)	18 of 100 (Routine)
Molong (King St)	Australia	Record daily precipitation	21.6 mm (0.9 in)	18 of 100 (Routine)
Chatsbury (Maryland)	Australia	Record daily precipitation	22.9 mm (0.9 in)	18 of 100 (Routine)
Kickerbell	Australia	Record daily precipitation	5.1 mm (0.20 in)	17 of 100 (Routine)
Mudgee (George Street)	Australia	Record daily precipitation	20.3 mm (0.8 in)	17 of 100 (Routine)
Springwood Bowling Club	Australia	Record daily precipitation	21.8 mm (0.9 in)	17 of 100 (Routine)
Arthurville (Cramond)	Australia	Record daily precipitation	20.3 mm (0.8 in)	17 of 100 (Routine)
Menangle Jmai	Australia	Record daily precipitation	10.2 mm (0.4 in)	17 of 100 (Routine)
Tranebjerg	Denmark	Record daily precipitation	6.6 mm (0.26 in)	17 of 100 (Routine)
Black Springs	Australia	Record daily precipitation	22.9 mm (0.9 in)	16 of 100 (Routine)
Burrundulla	Australia	Record daily precipitation	17.3 mm (0.7 in)	15 of 100 (Routine)
Neilrex (Caigan)	Australia	Record daily precipitation	10.9 mm (0.4 in)	15 of 100 (Routine)
Prospect Reservoir	Australia	Record daily precipitation	14.2 mm (0.6 in)	15 of 100 (Routine)
Warroo (Geeron)	Australia	Record daily precipitation	2.5 mm (0.10 in)	14 of 100 (Routine)
Blackville Post Office	Australia	Record daily precipitation	16.3 mm (0.6 in)	14 of 100 (Routine)
Katoomba (Murri St)	Australia	Record daily precipitation	17.3 mm (0.7 in)	14 of 100 (Routine)
Taralga Post Office	Australia	Record daily precipitation	17.8 mm (0.7 in)	14 of 100 (Routine)
Aliwal North	South Africa	Record daily precipitation	10.7 mm (0.4 in)	14 of 100 (Routine)
Goulburn (Kippilaw)	Australia	Record daily precipitation	18.8 mm (0.7 in)	13 of 100 (Routine)
Minnedosa	Canada	Record high minimum temperature	8.3 C (46.9 F)	13 of 100 (Routine)
Tranebjerg	Denmark	Record high minimum temperature	10.7 C (51.3 F)	13 of 100 (Routine)
Arnsberg	Germany	Record daily precipitation	9.8 mm (0.39 in)	13 of 100 (Routine)
Ekaterinburg	Russia	Record high minimum temperature	12.5 C (54.5 F)	13 of 100 (Routine)
Penshurst (Gresford)	Australia	Record daily precipitation	17.8 mm (0.7 in)	12 of 100 (Routine)
Orange (McLaughlin St)	Australia	Record daily precipitation	22.1 mm (0.9 in)	12 of 100 (Routine)

Counts by Type and Timescale

102 records

Records set or tied on 9 May 1921 by type: Highest daily maximum 3, Lowest daily maximum 2, Highest daily minimum 10, Lowest daily minimum 1, Heaviest daily rainfall 85, Heaviest daily snowfall 1.

Records on 9 May 1921 by type
Record type	Records
Highest daily maximum	3
Lowest daily maximum	2
Highest daily minimum	10
Lowest daily minimum	1
Heaviest daily rainfall	85
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 9 May 1921 by timescale: all-time 0, monthly 2, daily 100.

How Much Records Were Beaten By

99 broken records

Margins by which the 99 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 114.5. Ties are not counted.

Top 20 by Significance

9 May 1921

Top 20 records on 9 May 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1921	Altentreptow, DE	daily rain	38.0 mm (1.5 in)	32.9 mm (1.3 in)	23 years	50 of 100 (Notable)
9 May 1921	Canowindra (Canowindra Street), AU	daily rain	46.0 mm (1.8 in)	36.1 mm (1.4 in)	16 years	47 of 100 (Notable)
9 May 1921	Innisfail, AU	daily rain	161.5 mm (6.4 in)	114.5 mm (4.5 in)	2 years	43 of 100 (Notable)
9 May 1921	Rylstone (Ilford Rd), AU	daily rain	41.1 mm (1.6 in)	29.4 mm (1.2 in)	39 years	42 of 100 (Notable)
9 May 1921	Lithgow (Cooerwull), AU	daily rain	35.1 mm (1.4 in)	27.5 mm (1.1 in)	16 years	40 of 100 (Notable)
9 May 1921	Lithgow (Birdwood St), AU	daily rain	41.9 mm (1.6 in)	33.0 mm (1.3 in)	28 years	35 of 100 (Notable)
9 May 1921	Methven, AU	daily rain	37.3 mm (1.5 in)	28.4 mm (1.1 in)	28 years	34 of 100 (Routine)
9 May 1921	Brogers Creek Upper (Cookville, AU	monthly rain	227.3 mm (8.9 in)	54.6 mm (2.1 in)	1 year	33 of 100 (Routine)
9 May 1921	O'Connell (Stratford), AU	daily rain	32.0 mm (1.3 in)	15.7 mm (0.6 in)	16 years	29 of 100 (Routine)
9 May 1921	Blackville (Welton Dale), AU	daily rain	39.4 mm (1.6 in)	28.2 mm (1.1 in)	18 years	28 of 100 (Routine)
9 May 1921	Mount Victoria (Mt Victoria (S, AU	daily rain	27.9 mm (1.1 in)	18.2 mm (0.7 in)	41 years	28 of 100 (Routine)
9 May 1921	Cadia, AU	daily rain	30.7 mm (1.2 in)	19.3 mm (0.8 in)	12 years	28 of 100 (Routine)
9 May 1921	Wellington (Agrowplow), AU	daily rain	39.1 mm (1.5 in)	24.6 mm (1.0 in)	16 years	28 of 100 (Routine)
9 May 1921	Brewongle, AU	daily rain	26.9 mm (1.1 in)	13.9 mm (0.5 in)	16 years	26 of 100 (Routine)
9 May 1921	Olympia Priest Pt Park, US	monthly low min	-1.7 C (28.9 F)	0.6 C (1.1 F)	38 years	26 of 100 (Routine)
9 May 1921	Wellwood, AU	daily rain	27.7 mm (1.1 in)	12.5 mm (0.5 in)	16 years	21 of 100 (Routine)
9 May 1921	Jonkoping, SE	daily high min	9.0 C (48.2 F)	2.0 C (3.6 F)	36 years	21 of 100 (Routine)
9 May 1921	Cudal Post Office, AU	daily rain	19.8 mm (0.8 in)	10.9 mm (0.4 in)	33 years	20 of 100 (Routine)
9 May 1921	Trunkey Creek (Trunkey (Black, AU	daily rain	24.6 mm (1.0 in)	11.9 mm (0.5 in)	16 years	20 of 100 (Routine)
9 May 1921	Emu Plains, AU	daily rain	21.6 mm (0.9 in)	13.2 mm (0.5 in)	36 years	20 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 1921

Records set or tied on this calendar date in each year from 1793 to 1921. 1921 had 102 records.

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

Records on 05-09 in each year
Year	Records
1793	1
1795	1
1806	1
1810	1
1823	1
1834	1
1838	1
1843	1
1845	2
1846	1
1848	1
1850	2
1855	2
1857	1
1858	1
1861	1
1862	1
1864	2
1865	2
1867	2
1872	1
1873	2
1874	1
1875	2
1879	4
1880	3
1882	1
1883	2
1884	3
1885	3
1889	3
1890	3
1891	3
1892	1
1893	1
1895	2
1896	4
1897	3
1898	3
1899	2
1900	2
1901	9
1902	8
1903	9
1904	14
1905	34
1906	41
1907	11
1908	16
1909	34
1910	45
1911	23
1912	23
1913	15
1914	43
1915	27
1916	26
1917	50
1918	49
1919	47
1920	56
1921	102
1922	45
1923	461
1924	262
1925	123
1926	196
1927	343
1928	302
1929	166
1930	526
1931	411
1932	132
1933	482
1934	750
1935	111
1936	622
1937	128
1938	171
1939	345
1940	237
1941	335
1942	180
1943	524
1944	412
1945	538
1946	278
1947	1,145
1948	379
1949	417
1950	660
1951	188
1952	348
1953	507
1954	489
1955	288
1956	722
1957	505
1958	355
1959	252
1960	748
1961	516
1962	435
1963	1,103
1964	503
1965	730
1966	994
1967	681
1968	545
1969	653
1970	372
1971	338
1972	587
1973	386
1974	699
1975	465
1976	714
1977	931
1978	649
1979	1,605
1980	1,030
1981	639
1982	523
1983	872
1984	892
1985	829
1986	1,253
1987	1,481
1988	594
1989	1,347
1990	850
1991	759
1992	1,476
1993	967
1994	573
1995	960
1996	1,260
1997	1,088
1998	1,182
1999	970
2000	1,114
2001	969
2002	1,489
2003	1,802
2004	926
2005	851
2006	738
2007	765
2008	693
2009	816
2010	764
2011	1,104
2012	686
2013	684
2014	754
2015	689
2016	917
2017	539
2018	879
2019	1,043
2020	1,673
2021	501
2022	1,308
2023	474
2024	792
2025	622
2026	309

Download the Data

Data for records on 1921-05-09: 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	89
20 to 40	8
40 to 60	1
60 to 80	0
80 to 100	0
100 to 120	1