Weather Records on 30 May 2021

841 weather records were set or tied worldwide on 30 May 2021. Highest significance: Roswell Ind Air Pk, US.

Key Facts for 30 May 2021

On 30 May 2021, 841 weather records were set or tied at long-record stations worldwide.
133 were record highs and 601 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 32 monthly and 808 daily.
Roswell Ind Air Pk set a daily record precipitation of 77.0 mm (3.0 in) on 30 May 2021.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 436 records.

Record Map

841 stations

841 station records on 30 May 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Roswell Ind Air Pk	United States	Record daily precipitation	77.0 mm (3.0 in)	65 of 100 (Major)
Kirkalocka	Australia	Record daily precipitation	25.8 mm (1.0 in)	57 of 100 (Notable)
Meekatharra Airport	Australia	Record daily precipitation	41.2 mm (1.6 in)	57 of 100 (Notable)
Sherwood	Australia	Record daily precipitation	40.0 mm (1.6 in)	57 of 100 (Notable)
Wayjo Park	Australia	Record daily precipitation	55.0 mm (2.2 in)	57 of 100 (Notable)
Munarra	Australia	Record daily precipitation	41.4 mm (1.6 in)	56 of 100 (Notable)
Dalgety Downs	Australia	Record daily precipitation	61.0 mm (2.4 in)	54 of 100 (Notable)
Abbott 1 SE	United States	Record daily precipitation	62.5 mm (2.5 in)	54 of 100 (Notable)
Mount Gould	Australia	Record daily precipitation	53.0 mm (2.1 in)	53 of 100 (Notable)
Mt Sterling	United States	Record low maximum temperature	11.1 C (52.0 F)	53 of 100 (Notable)
Russellville	United States	Record low maximum temperature	12.8 C (55.0 F)	53 of 100 (Notable)
Hooker	United States	Record daily precipitation	67.6 mm (2.7 in)	53 of 100 (Notable)
Christchurch Intl	New Zealand	Record daily precipitation	63.2 mm (2.5 in)	52 of 100 (Notable)
Ocate 2 NW	United States	Record daily precipitation	101.6 mm (4.0 in)	52 of 100 (Notable)
Carey Downs	Australia	Record daily precipitation	55.0 mm (2.2 in)	51 of 100 (Notable)
Phoenixville 1 E	United States	Record low maximum temperature	11.1 C (52.0 F)	51 of 100 (Notable)
Hernando	United States	Record low maximum temperature	15.6 C (60.1 F)	50 of 100 (Notable)
Wynne	United States	Record low maximum temperature	16.1 C (61.0 F)	49 of 100 (Notable)
Newark Ag Farm	United States	Record low maximum temperature	11.1 C (52.0 F)	49 of 100 (Notable)
Salem	United States	Record low maximum temperature	12.8 C (55.0 F)	49 of 100 (Notable)
Kingston	United States	Record low maximum temperature	10.0 C (50.0 F)	49 of 100 (Notable)
Windy Harbour	Australia	Record daily precipitation	64.0 mm (2.5 in)	48 of 100 (Notable)
Mammoth Spring	United States	Record low maximum temperature	14.4 C (57.9 F)	48 of 100 (Notable)
Searcy	United States	Record low maximum temperature	16.1 C (61.0 F)	48 of 100 (Notable)
Quicksand	United States	Record low maximum temperature	12.2 C (54.0 F)	48 of 100 (Notable)
Amherst	United States	Record low maximum temperature	9.4 C (48.9 F)	48 of 100 (Notable)
Jackson	United States	Record low maximum temperature	16.1 C (61.0 F)	48 of 100 (Notable)
Keene	United States	Record low maximum temperature	8.9 C (48.0 F)	48 of 100 (Notable)
New Cumberland L/D	United States	Record low maximum temperature	11.1 C (52.0 F)	48 of 100 (Notable)
Cairo 3N	United States	Record low maximum temperature	14.4 C (57.9 F)	48 of 100 (Notable)
Cape Riche	Australia	Record daily precipitation	28.6 mm (1.1 in)	47 of 100 (Notable)
Harrisburg	United States	Record low maximum temperature	15.6 C (60.1 F)	47 of 100 (Notable)
Durham	United States	Record low maximum temperature	8.9 C (48.0 F)	47 of 100 (Notable)
Des Arc	United States	Record low maximum temperature	18.3 C (64.9 F)	46 of 100 (Notable)
Nashua 2 NNW	United States	Record low maximum temperature	8.9 C (48.0 F)	46 of 100 (Notable)
Hardy	United States	Record low minimum temperature	8.3 C (46.9 F)	45 of 100 (Notable)
Robinson	United States	Record low maximum temperature	17.2 C (63.0 F)	45 of 100 (Notable)
Boonville 1S	United States	Record low minimum temperature	5.0 C (41.0 F)	45 of 100 (Notable)
Neosho	United States	Record low maximum temperature	15.0 C (59.0 F)	45 of 100 (Notable)
Charlotteburg Rsvr	United States	Record low maximum temperature	8.9 C (48.0 F)	45 of 100 (Notable)
Delhi 2 SE	United States	Record low maximum temperature	7.2 C (45.0 F)	45 of 100 (Notable)
Monterey	United States	Record daily precipitation	52.1 mm (2.1 in)	45 of 100 (Notable)
Pannawonica	Australia	Record daily precipitation	51.0 mm (2.0 in)	44 of 100 (Notable)
Columbus	United States	Record low maximum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Waverly	United States	Record low maximum temperature	9.4 C (48.9 F)	44 of 100 (Notable)
Woodstock 2 NE	United States	Record low maximum temperature	11.7 C (53.1 F)	44 of 100 (Notable)
Ny City Cntrl Park	United States	Record low maximum temperature	10.6 C (51.1 F)	44 of 100 (Notable)
Chillinup	Australia	Record daily precipitation	37.8 mm (1.5 in)	43 of 100 (Notable)
Ann Arbor U of Mich	United States	Record low minimum temperature	0.0 C (32.0 F)	43 of 100 (Notable)
Eldorado Springs	United States	Record low maximum temperature	16.1 C (61.0 F)	43 of 100 (Notable)
Freehold-Marlboro	United States	Record low maximum temperature	11.1 C (52.0 F)	43 of 100 (Notable)
Long Branch-Oakhurst	United States	Record low maximum temperature	10.0 C (50.0 F)	43 of 100 (Notable)
Elmira	United States	Record low maximum temperature	8.9 C (48.0 F)	43 of 100 (Notable)
Riverhead Rsch Farm	United States	Record low maximum temperature	10.6 C (51.1 F)	43 of 100 (Notable)
Warren	United States	Record low maximum temperature	8.9 C (48.0 F)	43 of 100 (Notable)
Hardy	United States	Record low maximum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Algona	United States	Record low minimum temperature	2.2 C (36.0 F)	42 of 100 (Notable)
Garnett 1 E	United States	Record low maximum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Milaca	United States	Record low minimum temperature	0.6 C (33.1 F)	42 of 100 (Notable)
Mtn Grove 2 N	United States	Record low maximum temperature	12.8 C (55.0 F)	42 of 100 (Notable)

Counts by Type and Timescale

841 records

Records set or tied on 30 May 2021 by type: Highest daily maximum 69, Lowest daily maximum 429, Highest daily minimum 64, Lowest daily minimum 172, Heaviest daily rainfall 106, Deepest snow cover 1.

Records on 30 May 2021 by type
Record type	Records
Highest daily maximum	69
Lowest daily maximum	429
Highest daily minimum	64
Lowest daily minimum	172
Heaviest daily rainfall	106
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 30 May 2021 by timescale: all-time 1, monthly 32, daily 808.

How Much Records Were Beaten By

722 broken records

Margins by which the 722 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

30 May 2021

Top 20 records on 30 May 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 2021	Roswell Ind Air Pk, US	daily rain	77.0 mm (3.0 in)	55.7 mm (2.2 in)	60 years	65 of 100 (Major)
30 May 2021	Kirkalocka, AU	daily rain	25.8 mm (1.0 in)	15.6 mm (0.6 in)	100 years	57 of 100 (Notable)
30 May 2021	Meekatharra Airport, AU	daily rain	41.2 mm (1.6 in)	28.4 mm (1.1 in)	40 years	57 of 100 (Notable)
30 May 2021	Sherwood, AU	daily rain	40.0 mm (1.6 in)	21.7 mm (0.9 in)	80 years	57 of 100 (Notable)
30 May 2021	Wayjo Park, AU	daily rain	55.0 mm (2.2 in)	34.0 mm (1.3 in)	40 years	57 of 100 (Notable)
30 May 2021	Munarra, AU	daily rain	41.4 mm (1.6 in)	25.9 mm (1.0 in)	80 years	56 of 100 (Notable)
30 May 2021	Dalgety Downs, AU	monthly rain	61.0 mm (2.4 in)	5.1 mm (0.20 in)	113 years	54 of 100 (Notable)
30 May 2021	Abbott 1 SE, US	daily rain	62.5 mm (2.5 in)	38.4 mm (1.5 in)	20 years	54 of 100 (Notable)
30 May 2021	Mount Gould, AU	daily rain	53.0 mm (2.1 in)	33.2 mm (1.3 in)	48 years	53 of 100 (Notable)
30 May 2021	Mt Sterling, US	daily low max	11.1 C (52.0 F)	6.7 C (12.1 F)	120 years	53 of 100 (Notable)
30 May 2021	Russellville, US	daily low max	12.8 C (55.0 F)	6.6 C (11.9 F)	126 years	53 of 100 (Notable)
30 May 2021	Hooker, US	daily rain	67.6 mm (2.7 in)	34.8 mm (1.4 in)	50 years	53 of 100 (Notable)
30 May 2021	Christchurch Intl, NZ	monthly rain	63.2 mm (2.5 in)	22.6 mm (0.9 in)	11 years	52 of 100 (Notable)
30 May 2021	Ocate 2 NW, US	all-time rain	101.6 mm (4.0 in)	16.5 mm (0.6 in)	24 years	52 of 100 (Notable)
30 May 2021	Carey Downs, AU	monthly rain	55.0 mm (2.2 in)	4.2 mm (0.17 in)	92 years	51 of 100 (Notable)
30 May 2021	Phoenixville 1 E, US	daily low max	11.1 C (52.0 F)	5.6 C (10.1 F)	106 years	51 of 100 (Notable)
30 May 2021	Hernando, US	daily low max	15.6 C (60.1 F)	4.4 C (7.9 F)	112 years	50 of 100 (Notable)
30 May 2021	Wynne, US	daily low max	16.1 C (61.0 F)	5.0 C (9.0 F)	91 years	49 of 100 (Notable)
30 May 2021	Newark Ag Farm, US	daily low max	11.1 C (52.0 F)	7.2 C (13.0 F)	80 years	49 of 100 (Notable)
30 May 2021	Salem, US	daily low max	12.8 C (55.0 F)	4.4 C (7.9 F)	106 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

1818 to 2021

Records set or tied on this calendar date in each year from 1818 to 2021. 2021 had 841 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 2021-05-30: 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	721
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	1