Weather Records on 31 May 2021

834 weather records were set or tied worldwide on 31 May 2021. Highest significance: Kalgan River, AU.

Key Facts for 31 May 2021

On 31 May 2021, 834 weather records were set or tied at long-record stations worldwide.
222 were record highs and 453 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 61 monthly and 773 daily.
Kalgan River set a daily record precipitation of 53.0 mm (2.1 in) on 31 May 2021.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 435 records.

Record Map

834 stations

834 station records on 31 May 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kalgan River	Australia	Record daily precipitation	53.0 mm (2.1 in)	69 of 100 (Major)
Los Alamos	United States	Record daily precipitation	32.5 mm (1.3 in)	64 of 100 (Major)
Abilene Rgnl AP	United States	Record daily precipitation	90.4 mm (3.6 in)	64 of 100 (Major)
Gail	United States	Record daily precipitation	99.6 mm (3.9 in)	63 of 100 (Major)
Denmark	Australia	Record daily precipitation	69.5 mm (2.7 in)	62 of 100 (Major)
Pedernal 9 E	United States	Record daily precipitation	39.9 mm (1.6 in)	61 of 100 (Major)
Ft Worth NAS	United States	Record daily precipitation	77.2 mm (3.0 in)	61 of 100 (Major)
White Gums	Australia	Record daily precipitation	29.8 mm (1.2 in)	58 of 100 (Notable)
Hoshangabad	India	Record daily precipitation	39.1 mm (1.5 in)	58 of 100 (Notable)
Christchurch Intl	New Zealand	Record daily precipitation	48.0 mm (1.9 in)	58 of 100 (Notable)
Pampa #2	United States	Record daily precipitation	67.3 mm (2.6 in)	58 of 100 (Notable)
Tamar	Australia	Record daily precipitation	59.0 mm (2.3 in)	56 of 100 (Notable)
Gingin	Australia	Record daily precipitation	63.4 mm (2.5 in)	55 of 100 (Notable)
Little Chorkerup	Australia	Record daily precipitation	86.0 mm (3.4 in)	55 of 100 (Notable)
Coldwater	United States	Record daily precipitation	78.5 mm (3.1 in)	54 of 100 (Notable)
Mingenew	Australia	Record daily precipitation	49.0 mm (1.9 in)	53 of 100 (Notable)
Rogersville 1 NE	United States	Record low maximum temperature	15.6 C (60.1 F)	52 of 100 (Notable)
Quicksand	United States	Record low maximum temperature	14.4 C (57.9 F)	51 of 100 (Notable)
Karralea	Australia	Record daily precipitation	49.2 mm (1.9 in)	49 of 100 (Notable)
North Lakhimpur	India	Record daily precipitation	112.0 mm (4.4 in)	49 of 100 (Notable)
Peppermint Grove	Australia	Record daily precipitation	39.0 mm (1.5 in)	48 of 100 (Notable)
Warriup	Australia	Record daily precipitation	37.0 mm (1.5 in)	48 of 100 (Notable)
Corrigin	Australia	Record daily precipitation	37.0 mm (1.5 in)	48 of 100 (Notable)
Dimbokro	Cote D'Ivoire	Record daily precipitation	91.9 mm (3.6 in)	48 of 100 (Notable)
Norton W	United States	Record low maximum temperature	9.4 C (48.9 F)	48 of 100 (Notable)
Elk City 4 W	United States	Record daily precipitation	72.6 mm (2.9 in)	48 of 100 (Notable)
Keene	United States	Record low maximum temperature	10.0 C (50.0 F)	47 of 100 (Notable)
Woodstock 2 NE	United States	Record low maximum temperature	13.3 C (55.9 F)	47 of 100 (Notable)
Perenjori	Australia	Record daily precipitation	50.0 mm (2.0 in)	46 of 100 (Notable)
Margaret River	Australia	Record daily precipitation	64.2 mm (2.5 in)	46 of 100 (Notable)
Buckhannon	United States	Record low maximum temperature	12.8 C (55.0 F)	46 of 100 (Notable)
Trinchera	United States	Record daily precipitation	33.0 mm (1.3 in)	46 of 100 (Notable)
Chardzhev	Turkmenistan	Record high maximum temperature	42.9 C (109.2 F)	45 of 100 (Notable)
Storrs	United States	Record low maximum temperature	8.9 C (48.0 F)	45 of 100 (Notable)
Amherst	United States	Record low maximum temperature	9.4 C (48.9 F)	45 of 100 (Notable)
Lawrence	United States	Record low maximum temperature	10.6 C (51.1 F)	44 of 100 (Notable)
Lowell	United States	Record low maximum temperature	9.4 C (48.9 F)	44 of 100 (Notable)
Purcellville	United States	Record low maximum temperature	13.9 C (57.0 F)	44 of 100 (Notable)
El-Golea	Algeria	Record high minimum temperature	30.8 C (87.4 F)	43 of 100 (Notable)
Freehold-Marlboro	United States	Record low maximum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Waverly	United States	Record low maximum temperature	11.1 C (52.0 F)	43 of 100 (Notable)
Nakhon Si Thammarat	Thailand	Record daily precipitation	49.5 mm (1.9 in)	42 of 100 (Notable)
Kassler	United States	Record daily precipitation	31.2 mm (1.2 in)	42 of 100 (Notable)
Natchez	United States	Record low maximum temperature	23.3 C (73.9 F)	42 of 100 (Notable)
Norris	United States	Record low maximum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Anthony	United States	Record low maximum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
McAlester Rgnl AP	United States	Record low maximum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Newman	United States	Record high maximum temperature	41.7 C (107.1 F)	41 of 100 (Notable)
San Francisco Oceanside	United States	Record low minimum temperature	3.3 C (37.9 F)	41 of 100 (Notable)
Ulysses 3NE	United States	Record daily precipitation	29.5 mm (1.2 in)	41 of 100 (Notable)
Blue Hill Coop	United States	Record low maximum temperature	8.9 C (48.0 F)	41 of 100 (Notable)
Aberdeen	United States	Record low maximum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Long Branch-Oakhurst	United States	Record low maximum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Towanda 1 S	United States	Record low maximum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Levelland	United States	Record daily precipitation	69.3 mm (2.7 in)	41 of 100 (Notable)
Sherman	United States	Record low maximum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Rutland	United States	Record low maximum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Gairdner	Australia	Record daily precipitation	62.4 mm (2.5 in)	40 of 100 (Notable)
Ashdown 4 SSE	United States	Record low maximum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Liberal	United States	Record daily precipitation	45.7 mm (1.8 in)	40 of 100 (Notable)

Counts by Type and Timescale

834 records

Records set or tied on 31 May 2021 by type: Highest daily maximum 105, Lowest daily maximum 312, Highest daily minimum 117, Lowest daily minimum 141, Heaviest daily rainfall 158, Deepest snow cover 1.

Records on 31 May 2021 by type
Record type	Records
Highest daily maximum	105
Lowest daily maximum	312
Highest daily minimum	117
Lowest daily minimum	141
Heaviest daily rainfall	158
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 31 May 2021 by timescale: all-time 0, monthly 61, daily 773.

How Much Records Were Beaten By

699 broken records

Margins by which the 699 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 550.0. Ties are not counted.

Top 20 by Significance

31 May 2021

Top 20 records on 31 May 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 2021	Kalgan River, AU	daily rain	53.0 mm (2.1 in)	28.1 mm (1.1 in)	92 years	69 of 100 (Major)
31 May 2021	Los Alamos, US	daily rain	32.5 mm (1.3 in)	14.5 mm (0.6 in)	107 years	64 of 100 (Major)
31 May 2021	Abilene Rgnl AP, US	daily rain	90.4 mm (3.6 in)	51.3 mm (2.0 in)	72 years	64 of 100 (Major)
31 May 2021	Gail, US	daily rain	99.6 mm (3.9 in)	42.4 mm (1.7 in)	107 years	63 of 100 (Major)
31 May 2021	Denmark, AU	daily rain	69.5 mm (2.7 in)	23.8 mm (0.9 in)	92 years	62 of 100 (Major)
31 May 2021	Pedernal 9 E, US	daily rain	39.9 mm (1.6 in)	31.0 mm (1.2 in)	64 years	61 of 100 (Major)
31 May 2021	Ft Worth NAS, US	daily rain	77.2 mm (3.0 in)	59.7 mm (2.4 in)	54 years	61 of 100 (Major)
31 May 2021	White Gums, AU	daily rain	29.8 mm (1.2 in)	13.8 mm (0.5 in)	92 years	58 of 100 (Notable)
31 May 2021	Hoshangabad, IN	monthly rain	39.1 mm (1.5 in)	7.9 mm (0.31 in)	88 years	58 of 100 (Notable)
31 May 2021	Christchurch Intl, NZ	daily rain	48.0 mm (1.9 in)	24.1 mm (0.9 in)	56 years	58 of 100 (Notable)
31 May 2021	Pampa #2, US	daily rain	67.3 mm (2.6 in)	48.2 mm (1.9 in)	44 years	58 of 100 (Notable)
31 May 2021	Tamar, AU	daily rain	59.0 mm (2.3 in)	36.6 mm (1.4 in)	32 years	56 of 100 (Notable)
31 May 2021	Gingin, AU	daily rain	63.4 mm (2.5 in)	17.7 mm (0.7 in)	92 years	55 of 100 (Notable)
31 May 2021	Little Chorkerup, AU	monthly rain	86.0 mm (3.4 in)	27.0 mm (1.1 in)	0 years	55 of 100 (Notable)
31 May 2021	Coldwater, US	daily rain	78.5 mm (3.1 in)	54.1 mm (2.1 in)	22 years	54 of 100 (Notable)
31 May 2021	Mingenew, AU	daily rain	49.0 mm (1.9 in)	23.9 mm (0.9 in)	59 years	53 of 100 (Notable)
31 May 2021	Rogersville 1 NE, US	daily low max	15.6 C (60.1 F)	5.0 C (9.0 F)	111 years	52 of 100 (Notable)
31 May 2021	Quicksand, US	daily low max	14.4 C (57.9 F)	7.8 C (14.0 F)	91 years	51 of 100 (Notable)
31 May 2021	Karralea, AU	daily rain	49.2 mm (1.9 in)	24.4 mm (1.0 in)	32 years	49 of 100 (Notable)
31 May 2021	North Lakhimpur, IN	daily rain	112.0 mm (4.4 in)	34.5 mm (1.4 in)	87 years	49 of 100 (Notable)

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 2021

Records set or tied on this calendar date in each year from 1811 to 2021. 2021 had 834 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 2021-05-31: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 100	698
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	1