Weather Records on 21 May 2020

707 weather records were set or tied worldwide on 21 May 2020. Highest significance: Martinsville Fltr Plt, US.

Key Facts for 21 May 2020

On 21 May 2020, 707 weather records were set or tied at long-record stations worldwide.
231 were record highs and 212 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 691 daily.
Martinsville Fltr Plt set a daily record precipitation of 78.7 mm (3.1 in) on 21 May 2020.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

707 stations

707 station records on 21 May 2020 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 2020: highest significance records shown on the map
Station	Country	Type	Value	Significance
Martinsville Fltr Plt	United States	Record daily precipitation	78.7 mm (3.1 in)	72 of 100 (Major)
Sparta 3.5 SSW	United States	Record daily precipitation	92.2 mm (3.6 in)	70 of 100 (Major)
Deeral	Australia	Record daily precipitation	169.0 mm (6.7 in)	67 of 100 (Major)
Copper Hill	United States	Record daily precipitation	85.9 mm (3.4 in)	67 of 100 (Major)
Cheraw	United States	Record daily precipitation	80.3 mm (3.2 in)	66 of 100 (Major)
Bingil Bay	Australia	Record daily precipitation	301.8 mm (11.9 in)	65 of 100 (Major)
Tg Jiu	Romania	Record daily precipitation	84.9 mm (3.3 in)	60 of 100 (Major)
Pilot Rock 1 SE	United States	Record daily precipitation	26.7 mm (1.1 in)	60 of 100 (Major)
Mossman South Alchera Drive	Australia	Record daily precipitation	51.2 mm (2.0 in)	58 of 100 (Notable)
Mocksville 5SE	United States	Record daily precipitation	76.2 mm (3.0 in)	58 of 100 (Notable)
Blacksburg Nwso	United States	Record daily precipitation	56.9 mm (2.2 in)	58 of 100 (Notable)
Pulaski 2 E	United States	Record daily precipitation	65.3 mm (2.6 in)	58 of 100 (Notable)
Dunkirk 19NNE	United States	Record daily precipitation	32.0 mm (1.3 in)	57 of 100 (Notable)
N Wilkesboro	United States	Record daily precipitation	68.6 mm (2.7 in)	57 of 100 (Notable)
Woolwine 1 SE	United States	Record daily precipitation	121.7 mm (4.8 in)	56 of 100 (Notable)
Mulgrave Mill	Australia	Record daily precipitation	50.0 mm (2.0 in)	55 of 100 (Notable)
Bellenden Ker Bottom STN	Australia	Record daily precipitation	175.0 mm (6.9 in)	55 of 100 (Notable)
Port Douglas - Warner St	Australia	Record daily precipitation	58.0 mm (2.3 in)	54 of 100 (Notable)
Shelby	United States	Record daily precipitation	27.9 mm (1.1 in)	54 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record high maximum temperature	32.2 C (90.0 F)	52 of 100 (Notable)
Transou	United States	Record daily precipitation	136.7 mm (5.4 in)	52 of 100 (Notable)
New Castle	United States	Record daily precipitation	75.7 mm (3.0 in)	52 of 100 (Notable)
Lumberton	United States	Record daily precipitation	50.8 mm (2.0 in)	51 of 100 (Notable)
Tully Sugar Mill	Australia	Record daily precipitation	157.0 mm (6.2 in)	50 of 100 (Notable)
Marshall	United States	Record daily precipitation	37.8 mm (1.5 in)	50 of 100 (Notable)
Mocksville 5SE	United States	Record low maximum temperature	12.8 C (55.0 F)	50 of 100 (Notable)
Bluestone Lake	United States	Record daily precipitation	59.2 mm (2.3 in)	50 of 100 (Notable)
Stahl Peak	United States	Record daily precipitation	99.1 mm (3.9 in)	49 of 100 (Notable)
Pullman 2 NW	United States	Record daily precipitation	31.5 mm (1.2 in)	48 of 100 (Notable)
Karesuando	Sweden	Record snow depth	56.0 cm (22.0 in)	47 of 100 (Notable)
Lindsay	United States	Record low minimum temperature	0.6 C (33.1 F)	47 of 100 (Notable)
High Pt	United States	Record daily precipitation	88.6 mm (3.5 in)	47 of 100 (Notable)
Mt Airy 2 W	United States	Record low maximum temperature	11.1 C (52.0 F)	47 of 100 (Notable)
Shillong	India	Record daily precipitation	86.1 mm (3.4 in)	46 of 100 (Notable)
Boone 1 SE	United States	Record daily precipitation	86.9 mm (3.4 in)	45 of 100 (Notable)
Chapel Hill 2 W	United States	Record daily precipitation	70.4 mm (2.8 in)	45 of 100 (Notable)
Mt Mitchell	United States	Record daily precipitation	84.3 mm (3.3 in)	45 of 100 (Notable)
Newberry	United States	Record low maximum temperature	15.0 C (59.0 F)	45 of 100 (Notable)
Saltville 1N	United States	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Pearisburg 4 SSE	United States	Record daily precipitation	53.3 mm (2.1 in)	45 of 100 (Notable)
Elizabeth City Cgas	United States	Record daily precipitation	43.9 mm (1.7 in)	45 of 100 (Notable)
Mt Sophia	Australia	Record daily precipitation	114.0 mm (4.5 in)	44 of 100 (Notable)
Danbury	United States	Record daily precipitation	70.9 mm (2.8 in)	44 of 100 (Notable)
Babinda Post Office	Australia	Record daily precipitation	165.5 mm (6.5 in)	43 of 100 (Notable)
Celo 2 S	United States	Record daily precipitation	102.1 mm (4.0 in)	43 of 100 (Notable)
Lexington	United States	Record low maximum temperature	11.1 C (52.0 F)	43 of 100 (Notable)
Dikson	Russia	Record high maximum temperature	11.1 C (52.0 F)	42 of 100 (Notable)
London Locks	United States	Record daily precipitation	43.2 mm (1.7 in)	42 of 100 (Notable)
Derby Aero	Australia	Record low maximum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
Roanoke-Blacksburg Rgnl AP	United States	Record daily precipitation	69.1 mm (2.7 in)	41 of 100 (Notable)
White Cliff Point	Australia	Record daily precipitation	30.4 mm (1.2 in)	40 of 100 (Notable)
Elkin	United States	Record daily precipitation	53.8 mm (2.1 in)	40 of 100 (Notable)
Hogsett Rc Byrd Dam	United States	Record daily precipitation	40.4 mm (1.6 in)	40 of 100 (Notable)
Bakko I Hol	Norway	Record snow depth	120.0 cm (47.2 in)	39 of 100 (Notable)
Chester	United States	Record daily precipitation	30.7 mm (1.2 in)	39 of 100 (Notable)
Chatham	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Ripley	United States	Record daily precipitation	50.3 mm (2.0 in)	39 of 100 (Notable)
Baise	China	Record daily precipitation	62.7 mm (2.5 in)	38 of 100 (Notable)
Varfu Omul	Romania	Record daily precipitation	35.5 mm (1.4 in)	38 of 100 (Notable)
Asheboro 2 W	United States	Record daily precipitation	48.5 mm (1.9 in)	38 of 100 (Notable)

Counts by Type and Timescale

707 records

Records set or tied on 21 May 2020 by type: Highest daily maximum 127, Lowest daily maximum 155, Highest daily minimum 104, Lowest daily minimum 57, Heaviest daily rainfall 261, Deepest snow cover 3.

Records on 21 May 2020 by type
Record type	Records
Highest daily maximum	127
Lowest daily maximum	155
Highest daily minimum	104
Lowest daily minimum	57
Heaviest daily rainfall	261
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 21 May 2020 by timescale: all-time 0, monthly 16, daily 691.

How Much Records Were Beaten By

619 broken records

Margins by which the 619 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

21 May 2020

Top 20 records on 21 May 2020 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 2020	Martinsville Fltr Plt, US	daily rain	78.7 mm (3.1 in)	43.9 mm (1.7 in)	87 years	72 of 100 (Major)
21 May 2020	Sparta 3.5 SSW, US	daily rain	92.2 mm (3.6 in)	55.6 mm (2.2 in)	78 years	70 of 100 (Major)
21 May 2020	Deeral, AU	daily rain	169.0 mm (6.7 in)	79.3 mm (3.1 in)	86 years	67 of 100 (Major)
21 May 2020	Copper Hill, US	daily rain	85.9 mm (3.4 in)	45.3 mm (1.8 in)	76 years	67 of 100 (Major)
21 May 2020	Cheraw, US	daily rain	80.3 mm (3.2 in)	37.4 mm (1.5 in)	89 years	66 of 100 (Major)
21 May 2020	Bingil Bay, AU	monthly rain	301.8 mm (11.9 in)	127.4 mm (5.0 in)	22 years	65 of 100 (Major)
21 May 2020	Tg Jiu, RO	daily rain	84.9 mm (3.3 in)	40.2 mm (1.6 in)	34 years	60 of 100 (Major)
21 May 2020	Pilot Rock 1 SE, US	daily rain	26.7 mm (1.1 in)	11.0 mm (0.4 in)	95 years	60 of 100 (Major)
21 May 2020	Mossman South Alchera Drive, AU	daily rain	51.2 mm (2.0 in)	35.4 mm (1.4 in)	37 years	58 of 100 (Notable)
21 May 2020	Mocksville 5SE, US	daily rain	76.2 mm (3.0 in)	24.4 mm (1.0 in)	119 years	58 of 100 (Notable)
21 May 2020	Blacksburg Nwso, US	daily rain	56.9 mm (2.2 in)	34.0 mm (1.3 in)	55 years	58 of 100 (Notable)
21 May 2020	Pulaski 2 E, US	daily rain	65.3 mm (2.6 in)	39.1 mm (1.5 in)	30 years	58 of 100 (Notable)
21 May 2020	Dunkirk 19NNE, US	daily rain	32.0 mm (1.3 in)	12.4 mm (0.5 in)	93 years	57 of 100 (Notable)
21 May 2020	N Wilkesboro, US	daily rain	68.6 mm (2.7 in)	40.7 mm (1.6 in)	37 years	57 of 100 (Notable)
21 May 2020	Woolwine 1 SE, US	monthly rain	121.7 mm (4.8 in)	30.0 mm (1.2 in)	59 years	56 of 100 (Notable)
21 May 2020	Mulgrave Mill, AU	daily rain	50.0 mm (2.0 in)	22.1 mm (0.9 in)	86 years	55 of 100 (Notable)
21 May 2020	Bellenden Ker Bottom STN, AU	daily rain	175.0 mm (6.9 in)	108.0 mm (4.3 in)	39 years	55 of 100 (Notable)
21 May 2020	Port Douglas - Warner St, AU	daily rain	58.0 mm (2.3 in)	40.4 mm (1.6 in)	37 years	54 of 100 (Notable)
21 May 2020	Shelby, US	daily rain	27.9 mm (1.1 in)	19.0 mm (0.7 in)	65 years	54 of 100 (Notable)
21 May 2020	Aibonito 1 S, PR	daily high max	32.2 C (90.0 F)	2.2 C (4.0 F)	112 years	52 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

1793 to 2020

Records set or tied on this calendar date in each year from 1793 to 2020. 2020 had 707 records.

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

Records on 05-21 in each year
Year	Records
1793	1
1795	1
1811	1
1837	2
1842	1
1847	2
1854	1
1857	1
1858	1
1865	1
1866	1
1870	2
1875	1
1876	1
1880	2
1882	1
1885	1
1886	2
1887	3
1889	5
1890	3
1891	6
1892	1
1893	1
1894	4
1895	4
1896	5
1897	2
1898	1
1899	5
1900	1
1901	3
1902	4
1903	26
1904	8
1905	7
1906	12
1907	36
1908	13
1909	13
1910	14
1911	87
1912	24
1913	13
1914	26
1915	24
1916	13
1917	76
1918	51
1919	170
1920	39
1921	158
1922	39
1923	125
1924	148
1925	250
1926	221
1927	207
1928	173
1929	247
1930	133
1931	488
1932	343
1933	290
1934	590
1935	190
1936	328
1937	227
1938	348
1939	355
1940	456
1941	525
1942	482
1943	463
1944	310
1945	515
1946	324
1947	485
1948	312
1949	593
1950	403
1951	271
1952	385
1953	501
1954	961
1955	507
1956	409
1957	709
1958	511
1959	684
1960	615
1961	306
1962	553
1963	598
1964	788
1965	238
1966	296
1967	1,022
1968	549
1969	832
1970	449
1971	536
1972	557
1973	493
1974	847
1975	1,160
1976	393
1977	756
1978	575
1979	787
1980	857
1981	1,550
1982	599
1983	1,106
1984	950
1985	610
1986	908
1987	1,242
1988	819
1989	671
1990	947
1991	1,065
1992	1,143
1993	1,197
1994	656
1995	749
1996	1,461
1997	953
1998	1,200
1999	544
2000	897
2001	1,187
2002	2,048
2003	807
2004	898
2005	1,020
2006	810
2007	894
2008	740
2009	1,315
2010	962
2011	959
2012	848
2013	884
2014	522
2015	956
2016	567
2017	780
2018	525
2019	1,668
2020	707
2021	1,131
2022	1,512
2023	794
2024	751
2025	776
2026	356

Download the Data

Data for records on 2020-05-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Margin	Records
0 to 100	615
100 to 200	2
200 to 300	1
300 to 400	0
400 to 500	0
500 to 600	1