Weather Records on 31 May 1921

157 weather records were set or tied worldwide on 31 May 1921. Highest significance: Inverell Comparison, AU.

Key Facts for 31 May 1921

On 31 May 1921, 157 weather records were set or tied at long-record stations worldwide.
37 were record highs and 2 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 150 daily.
Inverell Comparison set a monthly record daily precipitation of 86.9 mm (3.4 in) on 31 May 1921.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 439 records.

Record Map

157 stations

157 station records on 31 May 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Inverell Comparison	Australia	Record daily precipitation	86.9 mm (3.4 in)	56 of 100 (Notable)
Fort Bourke	Australia	Record daily precipitation	34.0 mm (1.3 in)	49 of 100 (Notable)
Ottawa	Canada	Record daily precipitation	51.6 mm (2.0 in)	49 of 100 (Notable)
Ottawa Cda	Canada	Record daily precipitation	47.5 mm (1.9 in)	44 of 100 (Notable)
Mannum Council Depot	Australia	Record daily precipitation	26.7 mm (1.1 in)	38 of 100 (Notable)
Bathurst Gaol	Australia	Record daily precipitation	40.1 mm (1.6 in)	36 of 100 (Notable)
Bourke North	Australia	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Garah (Welbon)	Australia	Record daily precipitation	37.8 mm (1.5 in)	35 of 100 (Notable)
Gravesend Post Office	Australia	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Burra (Kooringa)	Australia	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)
Quirindi Post Office	Australia	Record daily precipitation	43.7 mm (1.7 in)	34 of 100 (Routine)
Goondiwindi Post Office	Australia	Record daily precipitation	35.8 mm (1.4 in)	33 of 100 (Routine)
Stuart Town	Australia	Record daily precipitation	70.1 mm (2.8 in)	32 of 100 (Routine)
Brewarrina Hospital	Australia	Record daily precipitation	29.0 mm (1.1 in)	31 of 100 (Routine)
Bourke Post Office	Australia	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
Mungindi Post Office	Australia	Record daily precipitation	59.7 mm (2.4 in)	28 of 100 (Routine)
Guyra Post Office	Australia	Record daily precipitation	59.2 mm (2.3 in)	28 of 100 (Routine)
Tanunda	Australia	Record daily precipitation	32.8 mm (1.3 in)	26 of 100 (Routine)
Enngonia (Belalie)	Australia	Record daily precipitation	30.7 mm (1.2 in)	26 of 100 (Routine)
Colane	Australia	Record daily precipitation	30.7 mm (1.2 in)	25 of 100 (Routine)
Kiandra Chalet	Australia	Record daily precipitation	25.4 mm (1.0 in)	25 of 100 (Routine)
Kiev	Ukraine	Record high minimum temperature	18.8 C (65.8 F)	25 of 100 (Routine)
Warialda Post Office	Australia	Record daily precipitation	77.0 mm (3.0 in)	24 of 100 (Routine)
Macclesfield	Australia	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Bingara (Keera)	Australia	Record daily precipitation	35.6 mm (1.4 in)	23 of 100 (Routine)
Bathurst Gaol	Australia	Record high minimum temperature	10.6 C (51.1 F)	23 of 100 (Routine)
Boomanoomana	Australia	Record daily precipitation	40.9 mm (1.6 in)	23 of 100 (Routine)
Murrawombi	Australia	Record daily precipitation	35.6 mm (1.4 in)	22 of 100 (Routine)
Murrurundi Post Office	Australia	Record daily precipitation	31.2 mm (1.2 in)	22 of 100 (Routine)
Bannockburn	Australia	Record daily precipitation	36.8 mm (1.4 in)	21 of 100 (Routine)
O'Connell (Stratford)	Australia	Record daily precipitation	35.1 mm (1.4 in)	21 of 100 (Routine)
Coronga Peak	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Callington	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Eulo Post Office	Australia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Barringun	Australia	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Kanmantoo	Australia	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Warren (Haddon Rig)	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Cubbaroo	Australia	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Moama	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Wahgunyah	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Bollon Mary St	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Coonamble (Pier Pier)	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Moree Post Office	Australia	Record daily precipitation	42.7 mm (1.7 in)	20 of 100 (Routine)
Wallabadah	Australia	Record daily precipitation	30.5 mm (1.2 in)	20 of 100 (Routine)
Bundarra Post Office	Australia	Record daily precipitation	28.4 mm (1.1 in)	20 of 100 (Routine)
Broke (Harrowby)	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Marsden (Merungle)	Australia	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Montreal McGill	Canada	Record high maximum temperature	29.4 C (84.9 F)	20 of 100 (Routine)
Lobethal	Australia	Record daily precipitation	36.8 mm (1.4 in)	19 of 100 (Routine)
Meadows	Australia	Record daily precipitation	32.0 mm (1.3 in)	19 of 100 (Routine)
Kynuna	Australia	Record daily precipitation	12.2 mm (0.5 in)	19 of 100 (Routine)
Enngonia (Morton Plains)	Australia	Record daily precipitation	17.0 mm (0.7 in)	19 of 100 (Routine)
Bourke (Beemery)	Australia	Record daily precipitation	21.3 mm (0.8 in)	19 of 100 (Routine)
Moonagee	Australia	Record daily precipitation	23.4 mm (0.9 in)	19 of 100 (Routine)
Walgett (Goangra)	Australia	Record daily precipitation	22.1 mm (0.9 in)	19 of 100 (Routine)
Bingara Post Office	Australia	Record daily precipitation	41.1 mm (1.6 in)	19 of 100 (Routine)
Wingen (Murrulla)	Australia	Record daily precipitation	17.0 mm (0.7 in)	19 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record high maximum temperature	32.5 C (90.5 F)	19 of 100 (Routine)
Mena	United States	Record high maximum temperature	33.9 C (93.0 F)	19 of 100 (Routine)
Hoyleton	Australia	Record daily precipitation	18.0 mm (0.7 in)	18 of 100 (Routine)

Counts by Type and Timescale

157 records

Records set or tied on 31 May 1921 by type: Highest daily maximum 12, Lowest daily maximum 1, Highest daily minimum 25, Lowest daily minimum 1, Heaviest daily rainfall 118.

Records on 31 May 1921 by type
Record type	Records
Highest daily maximum	12
Lowest daily maximum	1
Highest daily minimum	25
Lowest daily minimum	1
Heaviest daily rainfall	118
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 May 1921 by timescale: all-time 0, monthly 7, daily 150.

How Much Records Were Beaten By

142 broken records

Margins by which the 142 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 31.5. Ties are not counted.

Top 20 by Significance

31 May 1921

Top 20 records on 31 May 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1921	Inverell Comparison, AU	monthly rain	86.9 mm (3.4 in)	31.0 mm (1.2 in)	35 years	56 of 100 (Notable)
31 May 1921	Fort Bourke, AU	daily rain	34.0 mm (1.3 in)	31.5 mm (1.2 in)	28 years	49 of 100 (Notable)
31 May 1921	Ottawa, CA	daily rain	51.6 mm (2.0 in)	25.2 mm (1.0 in)	35 years	49 of 100 (Notable)
31 May 1921	Ottawa Cda, CA	daily rain	47.5 mm (1.9 in)	26.4 mm (1.0 in)	26 years	44 of 100 (Notable)
31 May 1921	Mannum Council Depot, AU	daily rain	26.7 mm (1.1 in)	12.2 mm (0.5 in)	31 years	38 of 100 (Notable)
31 May 1921	Bathurst Gaol, AU	daily rain	40.1 mm (1.6 in)	17.2 mm (0.7 in)	38 years	36 of 100 (Notable)
31 May 1921	Bourke North, AU	daily rain	30.5 mm (1.2 in)	20.1 mm (0.8 in)	29 years	35 of 100 (Notable)
31 May 1921	Garah (Welbon), AU	daily rain	37.8 mm (1.5 in)	29.9 mm (1.2 in)	28 years	35 of 100 (Notable)
31 May 1921	Gravesend Post Office, AU	daily rain	50.8 mm (2.0 in)	30.5 mm (1.2 in)	26 years	35 of 100 (Notable)
31 May 1921	Burra (Kooringa), AU	daily rain	29.5 mm (1.2 in)	10.2 mm (0.4 in)	31 years	34 of 100 (Routine)
31 May 1921	Quirindi Post Office, AU	daily rain	43.7 mm (1.7 in)	24.6 mm (1.0 in)	29 years	34 of 100 (Routine)
31 May 1921	Goondiwindi Post Office, AU	daily rain	35.8 mm (1.4 in)	26.9 mm (1.1 in)	29 years	33 of 100 (Routine)
31 May 1921	Stuart Town, AU	daily rain	70.1 mm (2.8 in)	24.9 mm (1.0 in)	29 years	32 of 100 (Routine)
31 May 1921	Brewarrina Hospital, AU	daily rain	29.0 mm (1.1 in)	14.0 mm (0.6 in)	38 years	31 of 100 (Routine)
31 May 1921	Bourke Post Office, AU	daily rain	27.9 mm (1.1 in)	8.8 mm (0.35 in)	47 years	30 of 100 (Routine)
31 May 1921	Mungindi Post Office, AU	monthly rain	59.7 mm (2.4 in)	10.4 mm (0.4 in)	20 years	28 of 100 (Routine)
31 May 1921	Guyra Post Office, AU	monthly rain	59.2 mm (2.3 in)	12.2 mm (0.5 in)	0 years	28 of 100 (Routine)
31 May 1921	Tanunda, AU	daily rain	32.8 mm (1.3 in)	9.2 mm (0.36 in)	31 years	26 of 100 (Routine)
31 May 1921	Enngonia (Belalie), AU	daily rain	30.7 mm (1.2 in)	20.5 mm (0.8 in)	28 years	26 of 100 (Routine)
31 May 1921	Colane, AU	daily rain	30.7 mm (1.2 in)	17.2 mm (0.7 in)	23 years	25 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

1811 to 1921

Records set or tied on this calendar date in each year from 1811 to 1921. 1921 had 157 records.

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

Records on 05-31 in each year
Year	Records
1811	1
1818	3
1827	1
1836	2
1845	1
1847	1
1853	2
1855	2
1858	1
1864	2
1865	1
1866	1
1867	1
1868	4
1869	1
1871	2
1873	3
1874	1
1877	1
1878	2
1879	2
1880	3
1882	1
1883	1
1885	1
1888	1
1889	2
1890	1
1892	1
1893	4
1894	2
1895	8
1897	5
1898	7
1899	1
1900	2
1901	9
1902	9
1903	17
1904	19
1905	7
1906	11
1907	20
1908	12
1909	8
1910	26
1911	20
1912	15
1913	83
1914	20
1915	23
1916	23
1917	13
1918	20
1919	44
1920	46
1921	157
1922	49
1923	98
1924	152
1925	226
1926	228
1927	121
1928	67
1929	246
1930	612
1931	223
1932	181
1933	397
1934	782
1935	156
1936	559
1937	462
1938	424
1939	461
1940	383
1941	410
1942	364
1943	552
1944	372
1945	457
1946	380
1947	439
1948	295
1949	303
1950	467
1951	640
1952	374
1953	654
1954	445
1955	534
1956	632
1957	304
1958	429
1959	459
1960	247
1961	472
1962	565
1963	354
1964	1,237
1965	494
1966	601
1967	987
1968	276
1969	555
1970	573
1971	714
1972	1,127
1973	418
1974	473
1975	797
1976	435
1977	605
1978	873
1979	915
1980	517
1981	775
1982	817
1983	1,494
1984	2,047
1985	790
1986	1,365
1987	822
1988	1,255
1989	912
1990	900
1991	1,381
1992	1,031
1993	982
1994	776
1995	693
1996	946
1997	1,163
1998	1,215
1999	790
2000	1,172
2001	1,047
2002	1,162
2003	831
2004	1,071
2005	724
2006	1,045
2007	793
2008	809
2009	570
2010	741
2011	1,498
2012	764
2013	1,100
2014	565
2015	704
2016	402
2017	440
2018	1,211
2019	420
2020	673
2021	834
2022	902
2023	454
2024	809
2025	1,204
2026	536

Download the Data

Data for records on 1921-05-31: 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 5	65
5 to 10	43
10 to 15	20
15 to 20	3
20 to 25	4
25 to 30	4
30 to 35	3