Weather Records on 10 May 1921

143 weather records were set or tied worldwide on 10 May 1921. Highest significance: Jamberoo (Lorna), AU.

Key Facts for 10 May 1921

On 10 May 1921, 143 weather records were set or tied at long-record stations worldwide.
7 were record highs and 0 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 141 daily.
Jamberoo (Lorna) set a monthly record daily precipitation of 218.9 mm (8.6 in) on 10 May 1921.
Across 163 earlier years (1805 to 2026) the same calendar date averaged 442 records.

Record Map

143 stations

143 station records on 10 May 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 10 May 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jamberoo (Lorna)	Australia	Record daily precipitation	218.9 mm (8.6 in)	55 of 100 (Notable)
Perth Regional Office	Australia	Record daily precipitation	55.1 mm (2.2 in)	50 of 100 (Notable)
Berry Masonic Village	Australia	Record daily precipitation	195.1 mm (7.7 in)	49 of 100 (Notable)
Brogers Creek Upper (Cookville	Australia	Record daily precipitation	182.1 mm (7.2 in)	48 of 100 (Notable)
Warrangong	Australia	Record daily precipitation	45.2 mm (1.8 in)	48 of 100 (Notable)
Chatsbury (Maryland)	Australia	Record daily precipitation	39.6 mm (1.6 in)	46 of 100 (Notable)
Goulburn	Australia	Record daily precipitation	30.7 mm (1.2 in)	45 of 100 (Notable)
Wollongong Post Office	Australia	Record daily precipitation	81.3 mm (3.2 in)	44 of 100 (Notable)
Bringelly (Maryland)	Australia	Record daily precipitation	47.0 mm (1.9 in)	41 of 100 (Notable)
Minto Surrey Street	Australia	Record daily precipitation	48.3 mm (1.9 in)	40 of 100 (Notable)
Currandooley	Australia	Record daily precipitation	35.6 mm (1.4 in)	39 of 100 (Notable)
Gundaroo (Bairnsdale)	Australia	Record daily precipitation	35.6 mm (1.4 in)	38 of 100 (Notable)
Hillgrove (Hillview)	Australia	Record daily precipitation	29.2 mm (1.1 in)	37 of 100 (Notable)
Bungendore Post Office	Australia	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Bungendore (Douglas)	Australia	Record daily precipitation	29.2 mm (1.1 in)	34 of 100 (Routine)
Greenethorpe (Iandra)	Australia	Record daily precipitation	30.5 mm (1.2 in)	34 of 100 (Routine)
Blackville Post Office	Australia	Record daily precipitation	28.7 mm (1.1 in)	32 of 100 (Routine)
Broke (Harrowby)	Australia	Record daily precipitation	38.1 mm (1.5 in)	32 of 100 (Routine)
Moss Vale (Hoskins Street)	Australia	Record daily precipitation	39.6 mm (1.6 in)	32 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record daily precipitation	37.6 mm (1.5 in)	29 of 100 (Routine)
Burwood 1	Australia	Record daily precipitation	39.4 mm (1.6 in)	29 of 100 (Routine)
Helensburgh (Sawan St)	Australia	Record daily precipitation	63.8 mm (2.5 in)	29 of 100 (Routine)
Brandon Cda	Canada	Record daily precipitation	36.3 mm (1.4 in)	28 of 100 (Routine)
Dublin Phoenix Park	Ireland	Record daily precipitation	28.8 mm (1.1 in)	26 of 100 (Routine)
Braidwood (Wallace Street)	Australia	Record daily precipitation	25.9 mm (1.0 in)	24 of 100 (Routine)
Milton Post Office	Australia	Record daily precipitation	91.4 mm (3.6 in)	24 of 100 (Routine)
Newcastle Nobbys Signal Statio	Australia	Record daily precipitation	37.8 mm (1.5 in)	23 of 100 (Routine)
Pitt Town (the Manse)	Australia	Record daily precipitation	25.9 mm (1.0 in)	23 of 100 (Routine)
Bungonia (Inverary Park)	Australia	Record daily precipitation	55.9 mm (2.2 in)	22 of 100 (Routine)
Newport	United States	Record daily precipitation	40.6 mm (1.6 in)	22 of 100 (Routine)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	25.4 mm (1.0 in)	21 of 100 (Routine)
Pine Bluff	United States	Record daily precipitation	31.0 mm (1.2 in)	21 of 100 (Routine)
Horton	United States	Record daily precipitation	43.4 mm (1.7 in)	21 of 100 (Routine)
Abbotslea	Australia	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Cavan	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Hamburg Fuhlsbuettel	Germany	Record daily precipitation	20.0 mm (0.8 in)	20 of 100 (Routine)
Bathurst Gaol	Australia	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Scone (Philip Street)	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Taralga Post Office	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Armidale (Radio Station 2Ad)	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Guyra Post Office	Australia	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Stonehenge	Australia	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Wee Waa (George St)	Australia	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Boggabri Post Office	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Wallabadah	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Maitland West	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Binnaway (Hawthorne)	Australia	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Werris Creek Post Office	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Murrurundi Post Office	Australia	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Majura 2	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Queanbeyan 2	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Wellington (Agrowplow)	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Belconnen (Weetangerra)	Australia	Record daily precipitation	17.5 mm (0.7 in)	20 of 100 (Routine)
Barraba Post Office	Australia	Record daily precipitation	9.1 mm (0.36 in)	20 of 100 (Routine)
Quirindi Post Office	Australia	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Fairlight Station	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Cobbora (Ellismayne)	Australia	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Lichtentanne	Germany	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Wallangarra Post Office	Australia	Record daily precipitation	12.4 mm (0.5 in)	20 of 100 (Routine)
Premer Post Office	Australia	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)

Counts by Type and Timescale

143 records

Records set or tied on 10 May 1921 by type: Highest daily maximum 1, Highest daily minimum 6, Heaviest daily rainfall 135, Heaviest daily snowfall 1.

Records on 10 May 1921 by type
Record type	Records
Highest daily maximum	1
Lowest daily maximum	0
Highest daily minimum	6
Lowest daily minimum	0
Heaviest daily rainfall	135
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 10 May 1921 by timescale: all-time 0, monthly 2, daily 141.

How Much Records Were Beaten By

137 broken records

Margins by which the 137 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 184.2. Ties are not counted.

Top 20 by Significance

10 May 1921

Top 20 records on 10 May 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 May 1921	Jamberoo (Lorna), AU	monthly rain	218.9 mm (8.6 in)	70.8 mm (2.8 in)	20 years	55 of 100 (Notable)
10 May 1921	Perth Regional Office, AU	daily rain	55.1 mm (2.2 in)	37.6 mm (1.5 in)	32 years	50 of 100 (Notable)
10 May 1921	Berry Masonic Village, AU	daily rain	195.1 mm (7.7 in)	184.2 mm (7.3 in)	20 years	49 of 100 (Notable)
10 May 1921	Brogers Creek Upper (Cookville, AU	daily rain	182.1 mm (7.2 in)	157.5 mm (6.2 in)	18 years	48 of 100 (Notable)
10 May 1921	Warrangong, AU	daily rain	45.2 mm (1.8 in)	35.5 mm (1.4 in)	16 years	48 of 100 (Notable)
10 May 1921	Chatsbury (Maryland), AU	daily rain	39.6 mm (1.6 in)	35.0 mm (1.4 in)	16 years	46 of 100 (Notable)
10 May 1921	Goulburn, AU	daily rain	30.7 mm (1.2 in)	19.3 mm (0.8 in)	62 years	45 of 100 (Notable)
10 May 1921	Wollongong Post Office, AU	daily rain	81.3 mm (3.2 in)	67.8 mm (2.7 in)	41 years	44 of 100 (Notable)
10 May 1921	Bringelly (Maryland), AU	daily rain	47.0 mm (1.9 in)	42.7 mm (1.7 in)	49 years	41 of 100 (Notable)
10 May 1921	Minto Surrey Street, AU	daily rain	48.3 mm (1.9 in)	47.3 mm (1.9 in)	20 years	40 of 100 (Notable)
10 May 1921	Currandooley, AU	daily rain	35.6 mm (1.4 in)	33.1 mm (1.3 in)	16 years	39 of 100 (Notable)
10 May 1921	Gundaroo (Bairnsdale), AU	daily rain	35.6 mm (1.4 in)	25.4 mm (1.0 in)	16 years	38 of 100 (Notable)
10 May 1921	Hillgrove (Hillview), AU	daily rain	29.2 mm (1.1 in)	26.4 mm (1.0 in)	14 years	37 of 100 (Notable)
10 May 1921	Bungendore Post Office, AU	daily rain	27.9 mm (1.1 in)	24.1 mm (0.9 in)	16 years	35 of 100 (Notable)
10 May 1921	Bungendore (Douglas), AU	daily rain	29.2 mm (1.1 in)	24.1 mm (0.9 in)	16 years	34 of 100 (Routine)
10 May 1921	Greenethorpe (Iandra), AU	daily rain	30.5 mm (1.2 in)	19.6 mm (0.8 in)	16 years	34 of 100 (Routine)
10 May 1921	Blackville Post Office, AU	daily rain	28.7 mm (1.1 in)	23.1 mm (0.9 in)	28 years	32 of 100 (Routine)
10 May 1921	Broke (Harrowby), AU	daily rain	38.1 mm (1.5 in)	37.1 mm (1.5 in)	26 years	32 of 100 (Routine)
10 May 1921	Moss Vale (Hoskins Street), AU	daily rain	39.6 mm (1.6 in)	21.8 mm (0.9 in)	49 years	32 of 100 (Routine)
10 May 1921	Sydney (Observatory Hill), AU	daily rain	37.6 mm (1.5 in)	16.5 mm (0.6 in)	51 years	29 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

1805 to 1921

Records set or tied on this calendar date in each year from 1805 to 1921. 1921 had 143 records.

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

Records on 05-10 in each year
Year	Records
1805	1
1814	2
1832	1
1834	1
1836	4
1838	1
1843	1
1846	1
1848	1
1855	2
1858	1
1860	1
1861	2
1867	3
1868	1
1869	1
1872	1
1874	4
1876	1
1878	1
1879	2
1880	3
1881	3
1883	1
1884	2
1885	2
1886	1
1887	1
1888	2
1889	4
1890	2
1891	2
1893	1
1895	4
1896	6
1897	4
1898	5
1900	4
1901	6
1902	18
1903	6
1904	7
1905	21
1906	42
1907	33
1908	10
1909	17
1910	21
1911	55
1912	15
1913	23
1914	17
1915	18
1916	26
1917	23
1918	105
1919	145
1920	54
1921	143
1922	38
1923	291
1924	198
1925	163
1926	291
1927	296
1928	189
1929	102
1930	647
1931	277
1932	145
1933	516
1934	412
1935	200
1936	439
1937	148
1938	179
1939	179
1940	317
1941	257
1942	237
1943	482
1944	200
1945	646
1946	455
1947	820
1948	491
1949	492
1950	356
1951	281
1952	342
1953	627
1954	554
1955	272
1956	669
1957	374
1958	338
1959	192
1960	660
1961	722
1962	593
1963	951
1964	259
1965	413
1966	1,290
1967	932
1968	861
1969	325
1970	555
1971	416
1972	573
1973	429
1974	608
1975	448
1976	672
1977	1,075
1978	815
1979	1,927
1980	865
1981	1,213
1982	671
1983	753
1984	635
1985	925
1986	669
1987	1,270
1988	490
1989	1,365
1990	1,071
1991	854
1992	875
1993	1,056
1994	622
1995	1,129
1996	1,469
1997	1,215
1998	1,268
1999	1,299
2000	1,036
2001	842
2002	867
2003	1,688
2004	735
2005	761
2006	879
2007	815
2008	877
2009	651
2010	855
2011	1,288
2012	1,054
2013	635
2014	506
2015	943
2016	815
2017	702
2018	923
2019	1,254
2020	1,346
2021	635
2022	1,346
2023	359
2024	622
2025	1,094
2026	496

Download the Data

Data for records on 1921-05-10: 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 25	120
25 to 50	13
50 to 75	2
75 to 100	0
100 to 125	0
125 to 150	0
150 to 175	1
175 to 200	1